Military history of Australia during World War II
Encyclopedia
Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 entered World War II shortly after the invasion of Poland
Invasion of Poland (1939)
The Invasion of Poland, also known as the September Campaign or 1939 Defensive War in Poland and the Poland Campaign in Germany, was an invasion of Poland by Germany, the Soviet Union, and a small Slovak contingent that marked the start of World War II in Europe...

, declaring war on Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 on 3 September 1939. By the end of the war, almost a million Australians had served in the armed forces
Australian Defence Force
The Australian Defence Force is the military organisation responsible for the defence of Australia. It consists of the Royal Australian Navy , Australian Army, Royal Australian Air Force and a number of 'tri-service' units...

, whose military units fought primarily in the European theatre
European Theatre of World War II
The European Theatre of World War II was a huge area of heavy fighting across Europe from Germany's invasion of Poland on September 1, 1939 until the end of the war with the German unconditional surrender on May 8, 1945...

, North African campaign
North African campaign
During the Second World War, the North African Campaign took place in North Africa from 10 June 1940 to 13 May 1943. It included campaigns fought in the Libyan and Egyptian deserts and in Morocco and Algeria and Tunisia .The campaign was fought between the Allies and Axis powers, many of whom had...

, and the South West Pacific theatre
South West Pacific theatre of World War II
The South West Pacific Theatre, technically the South West Pacific Area, between 1942 and 1945, was one of two designated area commands and war theatres enumerated by the Combined Chiefs of Staff of World War II in the Pacific region....

. In addition, Australia came under direct attack
Attacks on Australia during World War II
Due to Australia's geographic position there were relatively few attacks on Australia during World War II. Axis surface raiders and submarines periodically attacked shipping in Australian waters from 1940 to early 1945 and Japanese aircraft bombed towns and airfields in Northern Australia on 97...

 for the first time in its history; its casualties from enemy action during the war were 27,073 killed and 23,477 wounded.

In effect, Australia fought two wars between 1939 and 1945 – one against Germany and Italy as part of the British Commonwealth
Commonwealth of Nations
The Commonwealth of Nations, normally referred to as the Commonwealth and formerly known as the British Commonwealth, is an intergovernmental organisation of fifty-four independent member states...

's war effort and the other against Japan in alliance with the United States and Britain. While most Australian forces were withdrawn from the Mediterranean following the outbreak of war in the Pacific, they continued to take part in large numbers in the air offensive against Germany. From 1942 until early 1944, Australian forces played a key role in the Pacific War
Pacific War
The Pacific War, also sometimes called the Asia-Pacific War refers broadly to the parts of World War II that took place in the Pacific Ocean, its islands, and in East Asia, then called the Far East...

, making up the majority of Allied strength in the South West Pacific. The military was largely relegated to subsidiary fronts from mid-1944, but continued offensive operations against the Japanese until the war ended.

World War II contributed to major changes in the nation's economy, military and foreign policy. The war accelerated the process of industrialisation, led to the development of a larger peacetime military and began the process with which Australia shifted the focus of its foreign policy from Britain to the United States
Australia–United States relations
Australia - United States relations refers to international relations between Australia and the United States of America. Australia has also traditionally been aligned with the Commonwealth of Nations, however Australia has continually strengthened its relationship with the United States since...

. The effects of the war also fostered the development of a more diverse and cosmopolitan Australian society.

Outbreak of war

Between World War I and World War II, Australia suffered greatly from the Great Depression
Great Depression
The Great Depression was a severe worldwide economic depression in the decade preceding World War II. The timing of the Great Depression varied across nations, but in most countries it started in about 1929 and lasted until the late 1930s or early 1940s...

. This limited Australian defence expenditure and led to a decline in the size and effectiveness of the armed forces during the late 1920s and early 1930s. In the years leading up to the war, Australia followed Britain's policy towards Nazi Germany
Nazi Germany
Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

, supporting first its appeasement of Hitler and then its guarantee of Polish independence.

Australia entered the war against Germany on 3 September 1939, shortly after Britain declared war when its ultimatum for Germany to withdraw from Poland expired. The Government's decision to immediately enter the war was primarily made on the grounds that Australia's interests were inextricably linked to those of Britain, and that a British defeat would destroy the system of imperial defence which Australia relied upon for security against Japan. This position received almost universal public support, though there was little enthusiasm for war.

At the time war was declared, the Australian armed forces were less prepared than at the outbreak of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 in August 1914. The Royal Australian Navy
Royal Australian Navy
The Royal Australian Navy is the naval branch of the Australian Defence Force. Following the Federation of Australia in 1901, the ships and resources of the separate colonial navies were integrated into a national force: the Commonwealth Naval Forces...

 (RAN) was the best prepared of the three services, but was small and equipped with only two heavy cruiser
Heavy cruiser
The heavy cruiser was a type of cruiser, a naval warship designed for long range, high speed and an armament of naval guns roughly 203mm calibre . The heavy cruiser can be seen as a lineage of ship design from 1915 until 1945, although the term 'heavy cruiser' only came into formal use in 1930...

s, four light cruiser
Light cruiser
A light cruiser is a type of small- or medium-sized warship. The term is a shortening of the phrase "light armored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck...

s, two sloops
Sloop-of-war
In the 18th and most of the 19th centuries, a sloop-of-war was a warship with a single gun deck that carried up to eighteen guns. As the rating system covered all vessels with 20 guns and above, this meant that the term sloop-of-war actually encompassed all the unrated combat vessels including the...

, five obsolete destroyer
Destroyer
In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

s and a number of small and auxiliary warships. The Australian Army
Australian Army
The Australian Army is Australia's military land force. It is part of the Australian Defence Force along with the Royal Australian Navy and the Royal Australian Air Force. While the Chief of Defence commands the Australian Defence Force , the Army is commanded by the Chief of Army...

 comprised a small permanent cadre of 3,000 men and 80,000 part-time militiamen who had volunteered for training with the Citizen Military Forces
Australian Army Reserve
The Australian Army Reserve is a collective name given to the reserve units of the Australian Army. Since the Federation of Australia in 1901, the reserve military force has been known by many names, including the Citizens Forces, the Citizen Military Forces, the Militia and, unofficially, the...

 (CMF). The Royal Australian Air Force
Royal Australian Air Force
The Royal Australian Air Force is the air force branch of the Australian Defence Force. The RAAF was formed in March 1921. It continues the traditions of the Australian Flying Corps , which was formed on 22 October 1912. The RAAF has taken part in many of the 20th century's major conflicts...

 (RAAF) was the weakest of the services, and few of its 246 aircraft were modern. While the Government began a large military expansion and transferred some RAAF aircrew and units to British control upon the outbreak of war, it was unwilling to immediately dispatch an expeditionary force overseas due to the threat posed by Japanese intervention.

The first Australian shot of the war took place several hours after the declaration of war when a gun at Fort Queenscliff
Fort Queenscliff
Fort Queenscliff, in Victoria, Australia, dates from 1860 when an open battery was constructed on Shortland's Bluff to defend the entrance to Port Phillip. The Fort, which underwent major redevelopment in the late 1870s and 1880s, became the headquarters for an extensive chain of forts around Port...

 fired across the bows
Warning shot
A warning shot is a military term describing harmless artillery shot or gunshot intended to call attention and demand some action of compliance...

 of an Australian ship as it attempted to leave Melbourne
Melbourne
Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

 without required clearances. On 10 October 1939, a Short Sunderland
Short Sunderland
The Short S.25 Sunderland was a British flying boat patrol bomber developed for the Royal Air Force by Short Brothers. It took its service name from the town and port of Sunderland in northeast England....

 of No. 10 Squadron
No. 10 Squadron RAAF
No. 10 Squadron is a Royal Australian Air Force maritime patrol squadron based at RAAF Base Edinburgh. The Squadron was first formed in 1939 and has seen active service in World War II, East Timor, the War on Terrorism and the 2003 Gulf War.-Second World War:...

, based in England for re-equipment, became the first Australian and the first Commonwealth
Commonwealth of Nations
The Commonwealth of Nations, normally referred to as the Commonwealth and formerly known as the British Commonwealth, is an intergovernmental organisation of fifty-four independent member states...

 air force unit to go into action when it undertook a mission to Tunisia
Tunisia
Tunisia , officially the Tunisian RepublicThe long name of Tunisia in other languages used in the country is: , is the northernmost country in Africa. It is a Maghreb country and is bordered by Algeria to the west, Libya to the southeast, and the Mediterranean Sea to the north and east. Its area...

.
On 15 September 1939, Prime Minister Robert Menzies
Robert Menzies
Sir Robert Gordon Menzies, , Australian politician, was the 12th and longest-serving Prime Minister of Australia....

 announced the formation of the Second Australian Imperial Force
Second Australian Imperial Force
The Second Australian Imperial Force was the name given to the volunteer personnel of the Australian Army in World War II. Under the Defence Act , neither the part-time Militia nor the full-time Permanent Military Force could serve outside Australia or its territories unless they volunteered to...

 (AIF). This was an expeditionary force
Expeditionary warfare
Expeditionary warfare is used to describe the organization of a state's military to fight abroad, especially when deployed to fight away from its established bases at home or abroad. Expeditionary forces were in part the antecedent of the modern concept of Rapid Deployment Forces...

, which initially consisted of 20,000 men organised into an infantry division (the 6th Division) and auxiliary units. The AIF was institutionally separate from the CMF, which was legally restricted to service in Australia and its external territories, and was formed by raising new units rather than transferring CMF units. On 15 November Menzies announced the reintroduction of conscription for home defence service effective 1 January 1940. Recruitment for the AIF was initially slow, but one in six men of military age had enlisted by March 1940 and there was a huge surge of volunteers after the fall of France
Battle of France
In the Second World War, the Battle of France was the German invasion of France and the Low Countries, beginning on 10 May 1940, which ended the Phoney War. The battle consisted of two main operations. In the first, Fall Gelb , German armoured units pushed through the Ardennes, to cut off and...

 in June 1940. Men volunteered for the AIF for a range of reasons, with the most common being a sense of duty to defend Australia and the British Empire.

The AIF's major units were raised between 1939 and 1941. The 6th Division was formed during October and November 1939 and embarked for the Middle East in early 1940 to complete its training and receive modern equipment after the British Government assured the Australian Government that Japan did not pose an immediate threat. It was planned that the division would join the British Expeditionary Force
British Expeditionary Force (World War II)
The British Expeditionary Force was the British force in Europe from 1939–1940 during the Second World War. Commanded by General Lord Gort, the BEF constituted one-tenth of the defending Allied force....

 in France when its preparations were complete, but this did not eventuate as France was conquered before the division was ready. A further three AIF infantry divisions (the 7th Division, 8th Division and 9th Division) were raised in the first half of 1940 as well as a corps
Corps
A corps is either a large formation, or an administrative grouping of troops within an armed force with a common function such as Artillery or Signals representing an arm of service...

 headquarters (I Corps) and numerous support and service units. All of these divisions and the majority of the support units were deployed overseas during 1940 and 1941. An AIF armoured division (the 1st Armoured Division) was also raised in early 1941 but never left Australia.

While the government initially proposed deploying the entire RAAF overseas, it was instead decided to focus the force's resources on training aircrew to facilitate a massive expansion of Commonwealth air power. In late 1939 Australia and the other Dominions established the Empire Air Training Scheme (EATS) to train large numbers of men for service in the British Royal Air Force
Royal Air Force
The Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...

 (RAF) and other Commonwealth air units. Almost 28,000 Australians were eventually trained through EATS in schools in Australia, Canada and Rhodesia
Rhodesia
Rhodesia , officially the Republic of Rhodesia from 1970, was an unrecognised state located in southern Africa that existed between 1965 and 1979 following its Unilateral Declaration of Independence from the United Kingdom on 11 November 1965...

. While many of these men were posted to Australian Article XV squadrons
Article XV squadrons
Article XV squadrons were Australian, Canadian, and New Zealand air force squadrons formed from graduates of the British Commonwealth Air Training Plan , during World War II....

, the majority served with British and other Dominion squadrons. Moreover, these nominally 'Australian' squadrons were not under RAAF control and Australians often made up a minority of their airmen. As the Australian Government had no effective control over how airmen trained through EATS were used, most Australian historians regard the scheme as having hindered the development of Australia's defence capability. Nevertheless, RAAF airmen trained through EATS represented about nine percent of all aircrew who fought for the RAF in the European and Mediterranean theatres and made an important contribution to Allied operations.

North Africa, the Mediterranean and the Middle East

During the first years of World War II, Australia's military strategy was closely aligned with that of the United Kingdom. In line with this, most Australian military units deployed overseas in 1940 and 1941 were sent to the Mediterranean and Middle East where they formed a key part of the Commonwealth forces in the area. The three AIF infantry divisions sent to the Middle East saw extensive action, as did the RAAF squadrons and warships in this theatre.

North Africa

The RAN was the first of the Australian services to see action in the Mediterranean. At the time Italy entered the war
Military history of Italy during World War II
During World War II , the Kingdom of Italy had a varied and tumultuous military history. Defeated in Greece, France, East Africa and North Africa, the Italian invasion of British Somaliland was one of the only successful Italian campaigns of World War II accomplished without German support.In...

 on 10 June 1940 the RAN had a single cruiser and the five elderly destroyers of the so-called 'Scrap Iron Flotilla
Scrap Iron Flotilla
The Scrap Iron Flotilla was an Australian destroyer group that operated in the Mediterranean and Pacific during World War II. The name scrap iron flotilla was bestowed upon the group by Nazi Propaganda Minister Joseph Goebbels....

' at Alexandria with the British Mediterranean Fleet. During the first days of the Battle of the Mediterranean
Battle of the Mediterranean
The Battle of the Mediterranean was the name given to the naval campaign fought in the Mediterranean Sea during World War II, from 10 June 1940-2 May 1945....

, Sydney sank an Italian destroyer and a submarine. The Mediterranean Fleet maintained a high operational tempo, and on 19 July Sydney, with a British destroyer squadron in company, engaged the fast Italian light cruisers Bartolomeo Colleoni
Italian cruiser Bartolomeo Colleoni
Bartolomeo Colleoni was an Italian Condottieri class light cruiser, that served in the Regia Marina during World War II. It was named after Bartolomeo Colleoni, an Italian military leader of the 15th century....

 and Giovanni dalle Bande Nere
Italian cruiser Giovanni dalle Bande Nere
Giovanni delle Bande Nere was an Italian light cruiser of the first group of the Condottieri class, which served in the Regia Marina during World War II. She was named after the eponymous 16th century condottiero and member of the Medici family...

 in the Battle of Cape Spada
Battle of Cape Spada
The Battle of Cape Spada was a naval battle during the Battle of the Mediterranean in Second World War. It took place on 19 July 1940 in the Mediterranean Sea off Cape Spada, the north-western extremity of Crete.-Prelude:...

. In the running battle which followed, Bartolomeo Colleoni was sunk. The Australian ships spent much of their time at sea throughout 1940 and Sydney was relieved by her sister ship
Sister ship
A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

  in February 1941.

The Australian Army first saw action in Operation Compass
Operation Compass
Operation Compass was the first major Allied military operation of the Western Desert Campaign during World War II. British and Commonwealth forces attacked Italian forces in western Egypt and eastern Libya in December 1940 to February 1941. The attack was a complete success...

, the successful Commonwealth offensive in North Africa which was conducted between December 1940 and February 1941. The 6th Division relieved the 4th Indian Division on 14 December. Although the 6th Division was not fully equipped, it had completed its training and was given the task of capturing Italian fortresses bypassed by the British 7th Armoured Division during its advance.
The 6th Division went into action at Bardia on 3 January 1941. Although the fortress was manned by a larger Italian force, the Australian infantry quickly penetrated the defensive lines with the support of British tanks and artillery. The majority of the Italian force surrendered on 5 January and the Australians took 40,000 prisoners. The 6th Division followed up this success by assaulting the fortress of Tobruk
Tobruk
Tobruk or Tubruq is a city, seaport, and peninsula on Libya's eastern Mediterranean coast, near the border with Egypt. It is the capital of the Butnan District and has a population of 120,000 ....

 on 21 January. Tobruk was secured the next day with 25,000 Italian prisoners taken. The 6th Division subsequently pushed west along the coast road to Cyrenaica
Cyrenaica
Cyrenaica is the eastern coastal region of Libya.Also known as Pentapolis in antiquity, it was part of the Creta et Cyrenaica province during the Roman period, later divided in Libia Pentapolis and Libia Sicca...

 and captured Benghazi
Benghazi
Benghazi is the second largest city in Libya, the main city of the Cyrenaica region , and the former provisional capital of the National Transitional Council. The wider metropolitan area is also a district of Libya...

 on 4 February. The 6th Division was withdrawn for deployment to Greece later in February and was replaced by the untested 9th Division, which took up garrison duties in Cyrenaica.

In the last week of March 1941, a German-led force launched an offensive in Cyrenaica which rapidly defeated the Allied forces in the area, forcing a general withdrawal towards Egypt. The 9th Division formed the rear guard
Rear guard
A rear guard or rearguard is that part of a military force that protects it from attack from the rear, either during an advance or withdrawal...

 of this withdrawal, and on 6 April was ordered to defend the important port town of Tobruk
Tobruk
Tobruk or Tubruq is a city, seaport, and peninsula on Libya's eastern Mediterranean coast, near the border with Egypt. It is the capital of the Butnan District and has a population of 120,000 ....

 for at least two months. During the ensuing siege of Tobruk
Siege of Tobruk
The siege of Tobruk was a confrontation that lasted 240 days between Axis and Allied forces in North Africa during the Western Desert Campaign of the Second World War...

 the 9th Division, reinforced by the 18th Brigade
18th Brigade (Australia)
The 18th Brigade was an infantry brigade of the Australian Army, which served during the Second World War. The brigade was raised on 13 October 1939 and was one of the first three infantry brigades of the Second Australian Imperial Force to be formed. Initially commanded by Brigadier Leslie...

 of the 7th Division and British artillery and armoured regiments, used fortifications, aggressive patrolling and artillery to contain and defeat repeated German armoured and infantry attacks. Tobruk's defenders were sustained by the Mediterranean Fleet, and the elderly Australian destroyers made repeated supply 'runs' into the port. and were sunk during these operations. Upon the request of the Australian Government, the bulk of the 9th Division was withdrawn from Tobruk in September and October 1941 and was replaced by the British 70th Division. The 2/13th Battalion was forced to remain at Tobruk until the siege was lifted in December when the convoy evacuating it was attacked, however. The defence of Tobruk cost the Australian units involved 3,009 casualties, including 832 killed and 941 taken prisoner.

Two Australian fighter squadrons also took part in the fighting in North Africa. No. 239 Wing, a Curtiss P-40
Curtiss P-40
The Curtiss P-40 Warhawk was an American single-engine, single-seat, all-metal fighter and ground attack aircraft that first flew in 1938. The P-40 design was a modification of the previous Curtiss P-36 Hawk which reduced development time and enabled a rapid entry into production and operational...

-equipped unit in the Desert Air Force
Desert Air Force
The Desert Air Force , also known chronologically as Air Headquarters Western Desert, Air Headquarters Libya, AHQ Western Desert, the Western Desert Air Force, Desert Air Force, and the First Tactical Air Force , was an Allied tactical air force initially created from No...

, was dominated by Australians, in the form of two RAAF squadrons—No. 3 Squadron
No. 3 Squadron RAAF
No. 3 Squadron is a Royal Australian Air Force fighter squadron. It was first formed in 1916 and currently operates F/A-18 Hornet aircraft from RAAF Base Williamtown, near Newcastle, New South Wales.-World War I:...

 and No. 450 Squadron
No. 450 Squadron RAAF
No. 450 Squadron was a unit of the Royal Australian Air Force during World War II. It was the second RAAF Article XV squadron formed for service with the British military, under the British Commonwealth Air Training Plan...

—and numerous individual Australians in RAF squadrons. These two squadrons differed from the other RAAF squadrons in the Mediterranean in that they were made up of predominantly Australian ground staff and pilots; the other RAAF units had ground crews made up of mostly British RAF personnel.

Greece, Crete and Lebanon

In early 1941 the 6th Division and I Corps headquarters took part in the ill-fated Allied expedition to defend Greece
Battle of Greece
The Battle of Greece is the common name for the invasion and conquest of Greece by Nazi Germany in April 1941. Greece was supported by British Commonwealth forces, while the Germans' Axis allies Italy and Bulgaria played secondary roles...

 from a German invasion. The corps' commander, Lieutenant-General Thomas Blamey
Thomas Blamey
Field Marshal Sir Thomas Albert Blamey GBE, KCB, CMG, DSO, ED was an Australian general of the First and Second World Wars, and the only Australian to date to attain the rank of field marshal....

, and Prime Minister Menzies both regarded the operation as risky, but agreed to Australian involvement after the British Government provided them with briefings which deliberately understated the chance of defeat. The Allied force deployed to Greece was much smaller than the German force in the region and the defence of the country was compromised by inconsistencies between Greek and Allied plans.

Australian troops arrived in Greece during March and manned defensive positions in the north of the country alongside British, New Zealand and Greek units. Perth also formed part of the naval force which protected the Allied troop convoys travelling to Greece and participated in the Battle of Cape Matapan
Battle of Cape Matapan
The Battle of Cape Matapan was a Second World War naval battle fought from 27–29 March 1941. The cape is on the southwest coast of Greece's Peloponnesian peninsula...

 in late March. The outnumbered Allied force was not able to halt the Germans when they invaded on 6 April and was forced to retreat. The Australians and other Allied units conducted a fighting withdrawal from their initial positions and were evacuated from southern Greece between 24 April and 1 May. Australian warships also formed part of the force which protected the evacuation and embarked hundreds of soldiers from Greek ports. The 6th Division suffered heavy casualties in this campaign, with 320 men killed and 2,030 captured.

While most of the 6th Division returned to Egypt, the 19th Brigade Group
19th Brigade (Australia)
The 19th Brigade was a formation of the Australian Army during World War II as part of the 6th Division. Formed in April 1940 as a result of the reorganisation of the Second Australian Imperial Force when the infantry brigades composition was reduced from four to three battalions. The fourth...

 and two provisional infantry battalions landed at Crete
Crete
Crete is the largest and most populous of the Greek islands, the fifth largest island in the Mediterranean Sea, and one of the thirteen administrative regions of Greece. It forms a significant part of the economy and cultural heritage of Greece while retaining its own local cultural traits...

 where they formed a key part of the island's defences
Crete order of battle
This is the complete order of battle for the Battle of Crete and related operations in 1941.-Commonwealth & Allied Forces, Crete - "Creforce":...

. The 19th Brigade was initially successful in holding its positions when German paratroopers landed
Battle of Crete
The Battle of Crete was a battle during World War II on the Greek island of Crete. It began on the morning of 20 May 1941, when Nazi Germany launched an airborne invasion of Crete under the code-name Unternehmen Merkur...

 on 20 May, but was gradually forced to retreat. After several key airfields were lost the Allies evacuated the island's garrison. Approximately 3,000 Australians, including the entire 2/7th Infantry Battalion
2/7th Australian Infantry Battalion
The 2/7th Battalion was an infantry battalion of the Australian Army. Raised on 25 October 1939 at Puckapunyal, Victoria, it was raised as part of the Second Australian Imperial Force for service during the Second World War...

, could not be evacuated, and were taken prisoner. As a result of its heavy casualties the 6th Division required substantial reinforcements and equipment before it was again ready for combat. Perth and the new destroyers and also took part in operations around Crete, with Perth embarking soldiers for evacuation to Egypt.
The Allied defeat during the Greek Campaign indirectly contributed to a change of government in Australia. Prime Minister Menzies' leadership had been weakened by the lengthy period he spent in Britain during early 1941, and the high Australian losses in the Greek Campaign led many members of his United Australia Party
United Australia Party
The United Australia Party was an Australian political party that was founded in 1931 and dissolved in 1945. It was the political successor to the Nationalist Party of Australia and predecessor to the Liberal Party of Australia...

 (UAP) to conclude that he was not capable of leading the Australian war effort. Menzies resigned on 26 August after losing the confidence of his party and was replaced by Arthur Fadden
Arthur Fadden
Sir Arthur William Fadden, GCMG was an Australian politician and, briefly, the 13th Prime Minister of Australia.-Introduction:...

 from the Country Party
National Party of Australia
The National Party of Australia is an Australian political party.Traditionally representing graziers, farmers and rural voters generally, it began as the The Country Party, but adopted the name The National Country Party in 1975, changed to The National Party of Australia in 1982. The party is...

, which was the UAP's coalition partner. Fadden's government collapsed on 3 October and was replaced by an Australian Labor Party
Australian Labor Party
The Australian Labor Party is an Australian political party. It has been the governing party of the Commonwealth of Australia since the 2007 federal election. Julia Gillard is the party's federal parliamentary leader and Prime Minister of Australia...

 government under the leadership of John Curtin
John Curtin
John Joseph Curtin , Australian politician, served as the 14th Prime Minister of Australia. Labor under Curtin formed a minority government in 1941 after the crossbench consisting of two independent MPs crossed the floor in the House of Representatives, bringing down the Coalition minority...

.

The 7th Division and the 17th Brigade from the 6th Division formed a key part of the Allied ground forces
Syria-Lebanon Campaign order of battle
This is the order of battle for the Syria-Lebanon Campaign, a World War II campaign between the Western Allies and Vichy France during June and July, 1941.-Allied Forces:...

 during the Syria-Lebanon campaign
Syria-Lebanon campaign
The Syria–Lebanon campaign, also known as Operation Exporter, was the Allied invasion of Vichy French-controlled Syria and Lebanon, in June–July 1941, during World War II. Time Magazine referred to the fighting as a "mixed show" while it was taking place and the campaign remains little known, even...

 which was fought against Vichy French forces in June and July 1941. RAAF aircraft also joined the Royal Air Force
Royal Air Force
The Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...

 in providing close air support
Close air support
In military tactics, close air support is defined as air action by fixed or rotary winged aircraft against hostile targets that are close to friendly forces, and which requires detailed integration of each air mission with fire and movement of these forces.The determining factor for CAS is...

. The Australian force entered Lebanon on 8 June and advanced along the coast road and Litani River
Litani River
The Litani River is an important water resource in southern Lebanon. The river rises in the fertile Beqaa Valley valley, west of Baalbek, and empties into the Mediterranean Sea north of Tyre. Exceeding 140 km in length, the Litani River is the longest river in Lebanon and provides an average...

 valley. Although little resistance had been expected, the Vichy forces mounted a strong defence which made good use of the mountainous terrain. After the Allied attack became bogged down reinforcements were brought in and the Australian I Corps headquarters took command of the operation on 18 June. These changes enabled the Allies to overwhelm the French forces and the 7th Division entered Beirut on 12 July. The loss of Beirut and a British breakthrough in Syria led the Vichy commander to seek an armistice and the campaign ended on 13 July.

El Alamein

In the second half of 1941 the Australian I Corps was concentrated in Syria and Lebanon to rebuild its strength and prepare for further operations in the Middle East. Following the outbreak of war in the Pacific most elements of the Corps, including the 6th and 7th Divisions, returned to Australia in early 1942 to counter the perceived Japanese threat to Australia. The Australian Government agreed to British and United States requests to temporarily retain the 9th Division in the Middle East in exchange for the deployment of additional US troops to Australia and Britain's support for a proposal to expand the RAAF to 73 squadrons. The Government did not intend that the 9th Division would play a major role in active fighting, and it was not sent any further reinforcements. All of the RAN's ships in the Mediterranean were also withdrawn to the Pacific but most RAAF units in the Middle East remained in the theatre.

In June 1942 four Australian N class destroyers
J, K and N class destroyer
The J, K and N class was a class of 24 destroyers of the Royal Navy launched in 1938. They were a return to a smaller vessel, with a heavier torpedo armament, after the Tribal class that emphasised guns over torpedoes. The ships were built in three flotillas or groups, eight each of ships with...

 were transferred to the Mediterranean from the Indian Ocean to participate in Operation Vigorous
Operation Vigorous
Operation Vigorous was a World War II Allied operation to deliver a supply convoy that sailed from Haifa and Port Said on 12 June 1942 to Malta. The convoy encountered heavy Axis air and sea opposition and returned to Alexandria on 16 June....

, which was an attempt to supply the besieged island of Malta
Malta
Malta , officially known as the Republic of Malta , is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, south of Sicily, east of Tunisia and north of Libya, with Gibraltar to the west and Alexandria to the east.Malta covers just over in...

 from Egypt. This operation ended in failure, and had to be scuttled on 16 June after being bombed the previous day. After this operation, the three surviving destroyers returned to the Indian Ocean.

In mid-1942, the Axis forces defeated the Commonwealth force in Libya
Battle of Gazala
The Battle of Gazala was an important battle of the Second World War Western Desert Campaign, fought around the port of Tobruk in Libya from 26 May-21 June 1942...

 and advanced into north-west Egypt. In June the British Eighth Army made a stand just over 100 km west of Alexandria, at the railway siding of El Alamein
El Alamein
El Alamein is a town in the northern Matrouh Governorate of Egypt. Located on the Mediterranean Sea, it lies west of Alexandria and northwest of Cairo. As of 2007, it has a local population of 7,397 inhabitants.- Climate :...

 and the 9th Division was brought forward to reinforce this position. The lead elements of the Division arrived at El Alamein on 6 July and the Division was assigned the most northerly section of the Commonwealth defensive line. The 9th Division played a significant role in the First Battle of El Alamein
First Battle of El Alamein
The First Battle of El Alamein was a battle of the Western Desert Campaign of the Second World War, fought between Axis forces of the Panzer Army Africa commanded by Field Marshal Erwin Rommel, and Allied forces The First Battle of El Alamein (1–27 July 1942) was a battle of the Western Desert...

 which halted the Axis advance, though at the cost of heavy casualties, including the entire 2/28th Infantry Battalion which was forced to surrender on 27 July. Following this battle the division remained at the northern end of the El Alamein line and launched diversionary attacks during the Battle of Alam el Halfa in early September.

In October 1942, the 9th Division and the RAAF squadrons in the area took part in the Second Battle of El Alamein
Second Battle of El Alamein
The Second Battle of El Alamein marked a major turning point in the Western Desert Campaign of the Second World War. The battle took place over 20 days from 23 October – 11 November 1942. The First Battle of El Alamein had stalled the Axis advance. Thereafter, Lieutenant-General Bernard Montgomery...

. After a lengthy period of preparation, the Eighth Army launched its major offensive on 23 October. The 9th Division was involved in some of the heaviest fighting of the battle, and its advance in the coast area succeeded in drawing away enough German forces for the heavily reinforced 2nd New Zealand Division to decisively break though the Axis lines on the night of 1/2 November. The 9th Division suffered a high number of casualties during this battle and did not take part in the pursuit of the retreating Axis forces. During the battle the Australian Government requested that the division be returned to Australia as it was not possible to provide enough reinforcements to sustain it, and this was agreed by the British and US governments in late November. The 9th Division left Egypt for Australia in January 1943, ending the AIF's involvement in the war in North Africa.

Tunisia, Sicily and Italy

Although the Second Battle of El Alamein marked the end of a major Australian role in the Mediterranean, several RAAF units and hundreds of Australians attached to Commonwealth forces remained in the area until the end of the war. After the 9th Division was withdrawn Australia continued to be represented in North Africa by several RAAF squadrons which supported the 8th Army's advance through Libya and the subsequent Tunisia Campaign
Tunisia Campaign
The Tunisia Campaign was a series of battles that took place in Tunisia during the North African Campaign of the Second World War, between Axis and Allied forces. The Allies consisted of British Imperial Forces, including Polish and Greek contingents, with American and French corps...

. Two Australian destroyers ( and ) also participated in the Allied landings in North Africa
Operation Torch
Operation Torch was the British-American invasion of French North Africa in World War II during the North African Campaign, started on 8 November 1942....

 in November 1942.
Australia played a small role in the Italian Campaign
Italian Campaign (World War II)
The Italian Campaign of World War II was the name of Allied operations in and around Italy, from 1943 to the end of the war in Europe. Joint Allied Forces Headquarters AFHQ was operationally responsible for all Allied land forces in the Mediterranean theatre, and it planned and commanded the...

. The RAN returned to the Mediterranean between May and November 1943 when eight Bathurst class corvettes
Bathurst class corvette
The Bathurst class corvettes were a class of general purpose vessels produced in Australia during World War II. Originally classified as minesweepers, but widely referred to as corvettes, the Bathurst class vessels fulfilled a broad anti-submarine, anti-mine, and convoy escort role.Sixty Bathurst...

 were transferred from the British Eastern Fleet
British Eastern Fleet
The British Eastern Fleet was a fleet of the Royal Navy which existed from 1941 to 1971...

 to the Mediterranean Fleet to protect the invasion force during the Allied invasion of Sicily
Allied invasion of Sicily
The Allied invasion of Sicily, codenamed Operation Husky, was a major World War II campaign, in which the Allies took Sicily from the Axis . It was a large scale amphibious and airborne operation, followed by six weeks of land combat. It launched the Italian Campaign.Husky began on the night of...

. The corvettes also escorted convoys in the western Mediterranean before returning to the Eastern Fleet. No. 239 Wing and four Australian Article XV squadrons also took part in the Sicilian Campaign, flying from bases in Tunisia, Malta, North Africa and Sicily. No. 239 Wing subsequently provided air support for the Allied invasion of Italy
Allied invasion of Italy
The Allied invasion of Italy was the Allied landing on mainland Italy on September 3, 1943, by General Harold Alexander's 15th Army Group during the Second World War. The operation followed the successful invasion of Sicily during the Italian Campaign...

 in September 1943 and moved to the mainland in the middle of that month. The two Australian fighter bomber squadrons provided close air support to the Allied armies and attacked German supply lines until the end of the war. No. 454 Squadron
No. 454 Squadron RAAF
No. 454 Squadron of the Royal Australian Air Force was formed during World War II. 454 Squadron came into existence at Williamtown in New South Wales on 23 May 1941. The squadron was raised under the Empire Air Training Scheme.-Formation:...

 was also deployed to Italy from August 1944 and hundreds of Australians served in RAF units during the campaign.

The RAAF also took part in other Allied operations in the Mediterranean. Two RAAF squadrons, No. 451 Squadron
No. 451 Squadron RAAF
No. 451 Squadron was a Royal Australian Air Force army cooperation and fighter squadron of World War II. The squadron was formed at Bankstown in New South Wales on 12 February 1941 and began flying operations on 1 July that year as part of the North African Campaign in Egypt and Libya. In early...

 (Spitfires
Supermarine Spitfire
The Supermarine Spitfire is a British single-seat fighter aircraft that was used by the Royal Air Force and many other Allied countries throughout the Second World War. The Spitfire continued to be used as a front line fighter and in secondary roles into the 1950s...

) and No. 458 Squadron
No. 458 Squadron RAAF
No. 458 Squadron RAAF was a Royal Australian Air Force squadron during World War II. It was formed in Australia, under the Empire Air Training Scheme. The Squadron flew various versions of Vickers Wellington bombers, first in Europe and later in the Middle East.-Over Europe:No. 458 was formed at...

 (Wellingtons
Vickers Wellington
The Vickers Wellington was a British twin-engine, long range medium bomber designed in the mid-1930s at Brooklands in Weybridge, Surrey, by Vickers-Armstrongs' Chief Designer, R. K. Pierson. It was widely used as a night bomber in the early years of the Second World War, before being displaced as a...

), supported the Allied invasion of southern France
Operation Dragoon
Operation Dragoon was the Allied invasion of southern France on August 15, 1944, during World War II. The invasion was initiated via a parachute drop by the 1st Airborne Task Force, followed by an amphibious assault by elements of the U.S. Seventh Army, followed a day later by a force made up...

 in August 1944. No. 451 Squadron was based in southern France in late August and September and when the operation ended both squadrons were moved to Italy, though No. 451 Squadron was transferred to Britain in December. No. 459 Squadron
No. 459 Squadron RAAF
No 459 Squadron RAAF was a Royal Australian Air Force squadron during World War II. It served from 1942 as a maritime patrol and bomber unit in the mediterranean theatre of war until disbanded in 1945.-History:...

 was based in the eastern Mediterranean until the last months of the war in Europe and attacked German targets in Greece and the Aegean Sea
Aegean Sea
The Aegean Sea[p] is an elongated embayment of the Mediterranean Sea located between the southern Balkan and Anatolian peninsulas, i.e., between the mainlands of Greece and Turkey. In the north, it is connected to the Marmara Sea and Black Sea by the Dardanelles and Bosporus...

. In addition, 150 Australians served with the Balkan Air Force
Balkan Air Force
The Balkan Air Force was a late-World War II Allied air formation.-History:The formation was based at Bari in Italy, and activated on 7 June 1944 from AHQ 'G' Force to simplify command arrangements for the air support of Special Operations Executive-operations in the Balkans, i.e. across the...

, principally in No. 148 Squadron RAF
No. 148 Squadron RAF
No. 148 Squadron of the Royal Air Force has been part of the RAF since World War I.-History:As No. 148 Squadron it was reformed as a special duties squadron and part of the Balkan Air Force in World War II. It dropped men and materiel behind enemy lines in the occupied countries such as...

. This special duties squadron dropped men and supplies to guerrillas in Yugoslavia
Yugoslavia
Yugoslavia refers to three political entities that existed successively on the western part of the Balkans during most of the 20th century....

 and attempted to supply the Polish Home Army
Armia Krajowa
The Armia Krajowa , or Home Army, was the dominant Polish resistance movement in World War II German-occupied Poland. It was formed in February 1942 from the Związek Walki Zbrojnej . Over the next two years, it absorbed most other Polish underground forces...

 during the Warsaw Uprising
Warsaw Uprising
The Warsaw Uprising was a major World War II operation by the Polish resistance Home Army , to liberate Warsaw from Nazi Germany. The rebellion was timed to coincide with the Soviet Union's Red Army approaching the eastern suburbs of the city and the retreat of German forces...

 in 1944.

Britain and Western Europe

While the majority of the Australian military fought on the Western Front
Western Front (World War I)
Following the outbreak of World War I in 1914, the German Army opened the Western Front by first invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The tide of the advance was dramatically turned with the Battle of the Marne...

 in France during World War I, relatively few Australians fought in Europe during World War II. The RAAF, including thousands of Australians posted to British units, made a significant contribution to the strategic bombing of Germany and efforts to safeguard Allied shipping in the Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

. The other services made smaller contributions, with two Army brigades being briefly based in Britain in late 1940 and several of the RAN's warships serving in the Atlantic.

Defence of Britain

Australians participated in the defence of Britain throughout the war. More than 100 Australian airmen fought with the Royal Air Force
Royal Air Force
The Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...

 during the Battle of Britain
Battle of Britain
The Battle of Britain is the name given to the World War II air campaign waged by the German Air Force against the United Kingdom during the summer and autumn of 1940...

 in 1940, including over 30 fighter pilots. Two AIF brigades (the 18th and 25th
25th Brigade (Australia)
The 25th Brigade was a brigade-sized infantry unit of the Australian Army that served during the Second World War. Raised in July 1940 and consisting of three infantry battalions, the 25th Brigade served in the United Kingdom, the Middle East, New Guinea and Borneo before being disbanded in...

) were also stationed in Britain from June 1940 to January 1941 and formed part of the British mobile reserve which would have responded to any German landings. An Australian Army forestry group served in Britain between 1940 and 1943. Several Australian fighter squadrons were also formed in Britain during 1941 and 1942 and contributed to defending the country from German air raids and, from mid-1944, V-1 flying bomb
V-1 flying bomb
The V-1 flying bomb, also known as the Buzz Bomb or Doodlebug, was an early pulse-jet-powered predecessor of the cruise missile....

s.

The RAAF and RAN took part in the Battle of the Atlantic. No. 10 Squadron, based in Britain at the outbreak of war to take delivery of its Short Sunderland
Short Sunderland
The Short S.25 Sunderland was a British flying boat patrol bomber developed for the Royal Air Force by Short Brothers. It took its service name from the town and port of Sunderland in northeast England....

 flying boats, remained there throughout the conflict as part of RAF Coastal Command
RAF Coastal Command
RAF Coastal Command was a formation within the Royal Air Force . Founded in 1936, it was the RAF's premier maritime arm, after the Royal Navy's secondment of the Fleet Air Arm in 1937. Naval aviation was neglected in the inter-war period, 1919–1939, and as a consequence the service did not receive...

. It was joined by No. 461 Squadron
No. 461 Squadron RAAF
No. 461 Squadron was a Royal Australian Air Force maritime patrol squadron of World War II which operated under Royal Air Force control flying in Europe and over the Atlantic. The Squadron was formed in 1942 and was disbanded in 1945.-Squadron history:...

 in April 1942, also equipped with Sunderlands. These squadrons escorted Allied convoys and sank 12 U-boat
U-boat
U-boat is the anglicized version of the German word U-Boot , itself an abbreviation of Unterseeboot , and refers to military submarines operated by Germany, particularly in World War I and World War II...

s. No. 455 Squadron
No. 455 Squadron RAAF
No. 455 Squadron was a Royal Australian Air Force torpedo bomber squadron during World War II and became famous as part of the so-called ANZAC Strike Wing.-History:No. 455 Squadron was formed at Williamtown, New South Wales on 23 May 1941...

 also formed part of Coastal Command from April 1942 as an anti-shipping squadron equipped with light bombers. In this role the squadron made an unusual deployment to Vaenga in the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 in September 1942 to protect Convoy PQ-18
Convoy PQ-18
Convoy PQ-18 was one of the Arctic convoys sent from Britain to aid the Soviet Union in the war against Nazi Germany. The convoy departed Loch Ewe, Scotland on 2 September 1942 and arrived in Arkhangelsk on 21 September 1942....

. Hundreds of Australian airmen also served in RAF Coastal Command squadrons. In addition to the RAAF's contribution, several of the RAN's cruisers and destroyers escorted shipping in the Atlantic and Caribbean and hundreds of RAN personnel served aboard Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 ships in the Atlantic throughout the war.

Air war over Europe

The RAAF's role in the strategic air offensive in Europe
Strategic bombing during World War II
Strategic bombing during World War II is a term which refers to all aerial bombardment of a strategic nature between 1939 and 1945 involving any nations engaged in World War II...

 formed Australia's main contribution to the defeat of Germany. Approximately 13,000 Australian airmen served in dozens of British and five Australian squadrons in RAF Bomber Command
RAF Bomber Command
RAF Bomber Command controlled the RAF's bomber forces from 1936 to 1968. During World War II the command destroyed a significant proportion of Nazi Germany's industries and many German cities, and in the 1960s stood at the peak of its postwar military power with the V bombers and a supplemental...

 between 1940 and the end of the war. There was not a distinctive Australian contribution to this campaign, however, as most Australians served in British squadrons and the Australian bomber squadrons were part of RAF units.
The great majority of Australian aircrew in Bomber Command were graduates of the Empire Air Training Scheme. These men were not concentrated in Australian units, and were instead often posted to the Commonwealth squadron with the greatest need for personnel where they became part of a multi-national bomber crew. Five Australian heavy bomber squadrons (No. 460
No. 460 Squadron RAAF
No. 460 Squadron is an Royal Australian Air Force intelligence unit active within the Defence Imagery and Geospatial Organisation . It was first formed as a heavy bomber squadron during World War II on November 15, 1941 and disbanded on 10 October 1945 after seeing extensive combat over Europe. The...

, No. 462
No. 462 Squadron RAAF
No. 462 Squadron is a Royal Australian Air Force squadron which forms part of the Information Warfare Wing in the RAAF's Aerospace Operational Support Group. The squadron was first formed in 1942 as a heavy bomber unit and saw combat in this role in the Mediterranean area until it was disbanded in...

, No. 463
No. 463 Squadron RAAF
No. 463 Squadron RAAF was a Royal Australian Air Force heavy bomber squadron during World War II. The squadron was formed in the United Kingdom on 25 November 1943 from personnel and aircraft allocated from No. 467 Squadron RAAF. The Squadron was equipped with Avro Lancaster bombers and flew its...

, No. 466
No. 466 Squadron RAAF
No. 466 Squadron RAAF was a Royal Australian Air Force bomber squadron during World War II.-History:The squadron was formed at RAF Driffield in Yorkshire, England on 10 October 1942, under Article XV of the Empire Air Training Scheme. The majority of its original personnel were from British...

 and No. 467
No. 467 Squadron RAAF
No. 467 Squadron RAAF was a Royal Australian Air Force bomber squadron during World War II, active in the European Theater of Operations as an Article XV Squadron under command of the Royal Air Force.-History:No...

 squadrons) were formed within Bomber Command between 1941 and 1945, however, and the proportion of Australians in these units increased over time. No. 464 Squadron
No. 464 Squadron RAAF
No. 464 Squadron RAAF was a Royal Australian Air Force bomber squadron during World War II.-History:The Squadron was officially formed on 1 September 1942 at RAF Feltwell, Norfolk in the United Kingdom, under the Empire Air Training Scheme. No...

, which was equipped with light bombers, was also formed as part of Bomber Command but was transferred to the Second Tactical Air Force
RAF Second Tactical Air Force
The former RAF Second Tactical Air Force was one of three tactical air forces within the Royal Air Force during and after the Second World War...

 in June 1943 where it continued to attack targets in Europe. Unlike Canada, which concentrated its heavy bomber squadrons into No. 6 Group RCAF
No. 6 Group RCAF
No. 6 Group RCAF was an organization of Royal Canadian Air Force bomber squadrons which operated from airfields in Yorkshire, England during the Second World War. Although 6 Group was RCAF, it was controlled by the Royal Air Force as part of Bomber Command. No. 6 Group had been previously active...

 in 1943, the RAAF squadrons in Bomber Command were always part of British units, and the Australian Government had little control over how they were used.
Australians took part in all of Bomber Command's major offensives and suffered heavy losses during raids on German cities and targets in France. The Australian contribution to major raids was often substantial, and the Australian squadrons typically provided about 10 percent of the main bomber force during the winter of 1943–44, including during the Battle of Berlin
Battle of Berlin (air)
The Battle of Berlin was a British bombing campaign on Berlin from November 1943 – March 1944. The campaign was not limited solely to Berlin. Other German cities were attacked to prevent concentration of defences in Berlin, and Bomber Command had other responsibilities and operations to conduct...

. Overall, the Australian squadrons in Bomber Command dropped 6 percent of the total weight of bombs dropped by the command during the war. Australian aircrew in Bomber Command had one of the highest casualty rates of any part of the Australian military during World War II. Although only two percent of Australians enlisted in the military served with Bomber Command, they incurred almost 20 percent of all Australian deaths in combat; 3,486 were killed and hundreds more were taken prisoner.

Hundreds of Australians participated in the liberation of Western Europe
Western Front (World War II)
The Western Front of the European Theatre of World War II encompassed, Denmark, Norway, Luxembourg, Belgium, the Netherlands, France, and West Germany. The Western Front was marked by two phases of large-scale ground combat operations...

 during 1944 and 1945. Ten RAAF squadrons, hundreds of Australians in RAF units and about 500 Australian sailors serving with the Royal Navy formed part of the force
Australian contribution to the Battle of Normandy
The Australian contribution to the Battle of Normandy involved hundreds of military personnel operating under British command. It has been estimated that as many as 3,000 Australian military personnel took part in the Normandy landings on 6 June 1944, including between 2,000 and 2,500 Royal...

 assembled for the landing in Normandy
Operation Overlord
Operation Overlord was the code name for the Battle of Normandy, the operation that launched the invasion of German-occupied western Europe during World War II by Allied forces. The operation commenced on 6 June 1944 with the Normandy landings...

 on 6 June 1944; overall, it has been estimated that about 3000 Australian personnel took part in this operation. From 11 June until September 1944 the Spitfire-equipped No. 453 Squadron RAAF
No. 453 Squadron RAAF
No. 453 Squadron is a Royal Australian Air Force air traffic control unit. It was first was formed at Bankstown in New South Wales on 23 May 1941 during World War II and was disbanded in March 1942 after suffering heavy losses in combat during the Battle of Malaya...

 was often based at forward airfields in France and it and Australian light bomber and heavy bomber squadrons supported the liberation of France. RAAF light bomber and fighter squadrons continued to support to the Allied armies until the end of the war in Europe by attacking strategic targets and escorting bomber formations. No. 451 and 453 Squadrons formed part of the British Army of Occupation
British Army of the Rhine
There have been two formations named British Army of the Rhine . Both were originally occupation forces in Germany, one after the First World War, and the other after the Second World War.-1919–1929:...

 in Germany from September 1945, and it was planned that there would be a long-term Australian presence in this force. Few RAAF personnel volunteered to remain in Europe, however, and both squadrons were disbanded in January 1946.

War in the Pacific

Due to the emphasis placed on cooperation with Britain, relatively few Australian military units were stationed in Australia and the Asia-Pacific
Asia-Pacific
Asia-Pacific or Asia Pacific is the part of the world in or near the Western Pacific Ocean...

 Region after 1940. Measures were taken to improve Australia's defences as war with Japan
Pacific War
The Pacific War, also sometimes called the Asia-Pacific War refers broadly to the parts of World War II that took place in the Pacific Ocean, its islands, and in East Asia, then called the Far East...

 loomed in 1941, but these proved inadequate. In December 1941 the Australian Army in the Pacific comprised the 8th Division, most of which was stationed in Malaya, and eight partially trained and equipped divisions in Australia, including the 1st Armoured Division. The RAAF was equipped with 373 aircraft, most of which were obsolete trainers, and the RAN had three cruisers and two destroyers in Australian waters.

In 1942 the Australian military was reinforced by units recalled from the Middle East and an expansion of the CMF and RAAF. United States Military units also arrived in Australia in great numbers before being deployed to New Guinea. The Allies moved onto the offensive in late 1942, with the pace of advance accelerating in 1943. From 1944 the Australian military was mainly relegated to subsidiary roles, but continued to conduct large-scale operations until the end of the war.

Malaya and Singapore

From the 1920s Australia's defence thinking was dominated by the so-called 'Singapore strategy
Singapore strategy
The Singapore strategy was a strategy of the British Empire between 1919 and 1941. It was a series of war plans that evolved over a twenty year period to deter or defeat aggression by the Empire of Japan by basing a fleet of the Royal Navy at Singapore. Ideally, this fleet would be able to...

'. This strategy involved the construction and defence of a major naval base at Singapore from which a large British fleet would respond to Japanese aggression in the region. To this end, a high proportion of Australian forces in Asia were concentrated in Malaya during 1940 and 1941 as the threat from Japan increased. At the outbreak of war the Australian forces in Malaya comprised the 8th Division (less the 23rd Brigade
23rd Brigade (Australia)
The 23rd Brigade was a brigade of the Australian Army. Formed in 1940 for service during the Second World War, the brigade was initially a formation of the Second Australian Imperial Force assigned to the 8th Division, however, after its subunits were captured by the Japanese in 1942 it was...

) under the command of Major General Gordon Bennett
Gordon Bennett (Australian soldier)
Lieutenant General Henry Gordon Bennett CB, CMG, DSO, VD , Australian soldier, served in both World War I and World War II...

, four RAAF squadrons and eight warships. The RAAF became the first service to see action in the Pacific when Australian aircraft shadowing the Japanese invasion convoy bound for Malaya were fired at on 6 December 1941. Australian units participated in the unsuccessful Commonwealth attempts to defeat the Japanese landings, with RAAF aircraft attacking the beachhead
Beachhead
Beachhead is a military term used to describe the line created when a unit reaches a beach, and begins to defend that area of beach, while other reinforcements help out, until a unit large enough to begin advancing has arrived. It is sometimes used interchangeably with Bridgehead and Lodgement...

s and accompanying the British battleship and battlecruiser during their failed attempt
Sinking of Prince of Wales and Repulse
The sinking of Prince of Wales and Repulse was a Second World War naval engagement that took place north of Singapore, off the east coast of Malaya, near Kuantan, Pahang where the British Royal Navy battleship HMS Prince of Wales and battlecruiser HMS Repulse were sunk by land-based bombers and...

 to attack the Japanese invasion fleet.
The 8th Division and its attached Indian Army units was assigned responsibility for the defence of Johore in the south of Malaya and did not see action until mid-January 1942 when Japanese spearheads first reached the state. The division's first engagement was the Battle of Muar
Battle of Muar
The Battle of Muar was the last major battle of the Malayan campaign. It took place from 14–22 January 1942 around Gemensah Bridge and on the Muar River...

, in which the Japanese Twenty-Fifth Army was able to outflank the Commonwealth positions due to Bennett misdeploying the forces under his command so that the weak Indian 45th Brigade was assigned the crucial coastal sector and the stronger Australian brigades were deployed in less threatened areas. While the Commonwealth forces in Johore achieved a number of local victories, they were unable to do more than slow the Japanese advance and suffered heavy casualties. After being outmanoeuvred by the Japanese, the remaining Commonwealth units withdrew to Singapore on the night of 30–31 January.

Following the withdrawal to Singapore the 8th Division was deployed to defend island's north-west coast. Due to the casualties suffered in Johore most of the division's units were at half-strength. The commander of the Singapore fortress, Lieutenant General Arthur Ernest Percival
Arthur Ernest Percival
Lieutenant-General Arthur Ernest Percival, CB, DSO & Bar, OBE, MC, OStJ, DL was a British Army officer and World War I veteran...

, believed that the Japanese would land on the north-east coast of the island and deployed the near full-strength British 18th Division to defend this sector. The Japanese landing
Battle of Sarimbun Beach
The Battle of Sarimbun Beach was the first stage of the Japanese assault on Singapore in February 1942 during World War II. Sarimbun, in the west of Singapore Island, was the area in which Japanese troops, under the overall direction of Lieutenant General Tomoyuki Yamashita, first attacked Allied...

 on 8 February took part in the Australian sector, however, and the 8th Division was forced from its positions after just two days of heavy fighting. The division was also unable to turn back the Japanese landing at Kranji
Battle of Kranji
The Battle of Kranji was the second stage of the Empire of Japan's plan for the invasion of Singapore during the Second World War. On 9 February 1942 the Imperial Japanese Army assaulted the north-western front of the British colony of Singapore...

 and withdrew to the centre of the island. After further fighting in which the Commonwealth forces were pushed into a narrow perimeter around the urban area of Singapore, Percival surrendered his forces on 15 February. Following the surrender 14,972 Australians were taken prisoner, though some escaped on ships. These escapees included Major General Bennett, who was found by two post-war inquiries to have been unjustified in leaving his command.

Netherlands East Indies and Rabaul

While Australia's contribution to the pre-war plans to defend South East Asia from Japanese aggression was focused on the defence of Malaya and Singapore, small Australian forces were also deployed to defend several islands to the north of Australia. The role of these forces was to defend strategic airfields which could be used to launch attacks on the Australian mainland. Detachments of coastwatchers
Coastwatchers
The Coastwatchers, also known as the Coast Watch Organisation, Combined Field Intelligence Service or Section C, Allied Intelligence Bureau, were Allied military intelligence operatives stationed on remote Pacific islands during World War II to observe enemy movements and rescue stranded Allied...

 were also stationed in the Bismarck Archipelago
Bismarck Archipelago
The Bismarck Archipelago is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea.-History:...

 and Solomon Islands
Solomon Islands
Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...

 to report on any Japanese operations there.
At the start of the Pacific War the strategic port town of Rabaul
Rabaul
Rabaul is a township in East New Britain province, Papua New Guinea. The town was the provincial capital and most important settlement in the province until it was destroyed in 1994 by falling ash of a volcanic eruption. During the eruption, ash was sent thousands of metres into the air and the...

 in New Britain
New Britain
New Britain, or Niu Briten, is the largest island in the Bismarck Archipelago of Papua New Guinea. It is separated from the island of New Guinea by the Dampier and Vitiaz Straits and from New Ireland by St. George's Channel...

 was defended by 'Lark Force
Lark Force
Lark Force was an Australian army unit formed in March 1941 during World War II for service in New Britain and New Ireland. Raised in Australia and deployed to Rabaul and Kavieng, aboard SS Katoomba, MV Neptuna and HMAT Zealandia, to defend their strategically important harbours and airfields.The...

', which comprised the 2/22nd Infantry Battalion reinforced with coastal artillery and a poorly equipped RAAF bomber squadron. While Lark Force was regarded as inadequate by the Australian military, it was not possible to reinforce it before the Japanese South Seas Force landed at Rabaul on 23 January 1942. The outnumbered Australian force was swiftly defeated
Battle of Rabaul (1942)
The Battle of Rabaul, also known by the Japanese as Operation R, was fought on the island of New Britain in the Australian Territory of New Guinea, in January and February 1942. It was a strategically significant defeat of Allied forces by Japan in the Pacific campaign of World War II...

 and most of the survivors surrendered in the weeks after the battle. Few members of Lark Force survived the war, as at least 130 were murdered by the Japanese on 4 February and 1,057 Australian soldiers and civilian prisoners from Rabaul were killed when the ship carrying them to Japan (Montevideo Maru
Montevideo Maru
The Montevideo Maru was a Japanese auxiliary ship that was sunk in World War II, resulting in the drowning of a large number of Australian prisoners of war and civilians being transported from Rabaul...

) was sunk by a US submarine on 1 July 1942.

AIF troops were also dispatched from Darwin to the Netherlands East Indies (NEI) in the first weeks of the Pacific War. Reinforced battalions from the 23rd Brigade were sent to Koepang
Kupang
Not to be confused with Tanjung Kupang in JohoreKupang is the provincial capital of East Nusa Tenggara province in southeast Indonesia....

 in West Timor
West Timor
West Timor is the western and Indonesian portion of the island of Timor and part of the province of East Nusa Tenggara, .During the colonial period it was known as "Dutch Timor" and was a centre of Dutch loyalists during the Indonesian National Revolution...

 ('Sparrow Force
Sparrow Force
Sparrow Force was a detachment based on the 2/40th Australian Infantry Battalion and other British and Australian 8th Division units, during World War II. The force was formed to defend the island of Timor, from invasion by the Empire of Japan...

') and the island of Ambon
Ambon Island
Ambon Island is part of the Maluku Islands of Indonesia. The island has an area of , and is mountainous, well watered, and fertile. Ambon Island consists of 2 territories: The main city and seaport is Ambon , which is also the capital of Maluku province and Maluku Tengah Ambon Island is part of the...

 ('Gull Force') to defend these strategic locations from Japanese attack. The 2/2nd Independent Company
2/2nd Commando Squadron (Australia)
The 2/2nd Commando Squadron was one of 12 independent companies or commando squadrons raised by the Australian Army for service during World War II. The 2/2nd served in Timor, New Guinea and New Britain during World War II, taking part in the Battle of Timor in June 1942 as part of Sparrow Force...

 was also sent to Dili
Dili
Dili, spelled Díli in Portuguese, is the capital, largest city, chief port and commercial centre of East Timor.-Geography and Administration:Dili lies on the northern coast of Timor island, the easternmost of the Lesser Sunda Islands....

 in Portuguese Timor
Portuguese Timor
Portuguese Timor was the name of East Timor when it was under Portuguese control. During this period, Portugal shared the island of Timor with the Netherlands East Indies, and later with Indonesia....

 in violation of Portugal's neutrality. The force at Ambon was defeated
Battle of Ambon
The Battle of Ambon occurred on the island of Ambon in the Dutch East Indies , on 30 January – 3 February 1942, during World War II. A Japanese invasion was resisted by Dutch and Australian forces...

 by the Japanese landing on 30 January and surrendered on 3 February 1942. Over 300 Australian prisoners were subsequently killed by Japanese troops in a series of mass executions during February. While the force at Koepang was defeated after the Japanese landed there on 20 February and also surrendered, Australian commandos
Australian commandos
The name commando has been applied to a variety of Australian special forces and light infantry units that have been formed since 1941–42. The first Australian "commando" units were formed during the Second World War, where they mainly performed reconnaissance and long-range patrol roles during...

 waged a guerrilla campaign against the Japanese in Portuguese Timor until February 1943. and were lost in September and December 1942, respectively, while operating in support of the commandos.
In the lead-up to the Japanese invasion of Java
Battle of Java (1942)
The Battle of Java was a battle of the Pacific theatre of World War II. It occurred on the island of Java from 28 February-12 March 1942. It involved forces from the Empire of Japan, which invaded on 28 February 1942, and Allied personnel...

 a force of 242 carrier and land-based aircraft attacked Darwin on 19 February 1942. At the time Darwin was an important base for Allied warships and a staging point for shipping supplies and reinforcements into the NEI. The Japanese attack was successful, and resulted in the deaths of 251 civilians and military personnel, most of whom were non-Australian Allied seamen, and heavy damage to RAAF Base Darwin
RAAF Base Darwin
RAAF Base Darwin is a Royal Australian Air Force base located in the city of Darwin, Northern Territory. The base shares its runway with Darwin International Airport.-History:...

 and the town's port facilities.

Several Australian warships, a 3,000 strong Army unit and aircraft from several RAAF squadrons participated in the unsuccessful defence of Java when the Japanese invaded the island in March 1942. Perth formed part of the main American-British-Dutch-Australian Command
American-British-Dutch-Australian Command
The American-British-Dutch-Australian Command, or ABDACOM, was a short-lived, supreme command for all Allied forces in South East Asia, in early 1942, during the Pacific War in World War II...

 (ABDACOM) naval force which was defeated in the Battle of the Java Sea
Battle of the Java Sea
The Battle of the Java Sea was a decisive naval battle of the Pacific campaign of World War II, that sealed the fate of the Netherlands East Indies....

 on 27 February during an attempt to intercept one of the Japanese invasion convoys. Perth was sunk on 1 March when she and encountered
Battle of Sunda Strait
The Battle of Sunda Strait was a naval battle which occurred during World War II. On the night of 28 February – 1 March 1942, the Australian light cruiser and the American heavy cruiser faced a major Imperial Japanese Navy task force. After a fierce battle of several hours duration, both Allied...

 another Japanese invasion force while trying to escape to Tjilatjap on the south coast of Java. The sloop was also sunk off the south coast of Java when she was attacked by three Japanese cruisers while escorting a convoy on 4 March. Other Australian warships, including the light cruiser and several corvettes successfully escaped from NEI waters. An Army force made up of elements from the 7th Division also formed part of the ABDACOM land forces on Java but saw little action before it surrendered at Bandung
Bandung
Bandung is the capital of West Java province in Indonesia, and the country's third largest city, and 2nd largest metropolitan area in Indonesia, with a population of 7.4 million in 2007. Located 768 metres above sea level, approximately 140 km southeast of Jakarta, Bandung has cooler...

 on 12 March after the Dutch forces on the island began to capitulate. RAAF aircraft operating from bases in Java and Australia also participated in the fighting, and 160 ground crew from No. 1 Squadron RAAF
No. 1 Squadron RAAF
No. 1 Squadron is a Royal Australian Air Force squadron based at RAAF Amberley. The squadron is currently being re-equipped with F/A-18F Super Hornet multi-role fighters.-World War I:...

 were taken prisoner.

Following the conquest of the NEI, the Japanese Navy's main aircraft carrier force
1st Air Fleet of the Imperial Japanese Navy
The Imperial Japanese Navy at the beginning of World War II contained the world's largest carrier fleet. At the centre, was the 1st Air Fleet which was a grouping of naval aircraft and aircraft carriers...

 raided the Indian Ocean
Indian Ocean raid
The Indian Ocean raid was a naval sortie by the Fast Carrier Strike Force of the Imperial Japanese Navy from 31 March-10 April 1942 against Allied shipping and bases in the Indian Ocean. It was an early engagement of the Pacific campaign of World War II...

. This force attacked Ceylon in early April, and Vampire was sunk off Trincomalee
Trincomalee
Trincomalee is a port city in Eastern Province, Sri Lanka and lies on the east coast of the island, about 113 miles south of Jaffna. It has a population of approximately 100,000 . The city is built on a peninsula, which divides the inner and outer harbours. Overlooking the Kottiyar Bay,...

 on 12 April while escorting , which was also lost. The Australian Army's 16th and 17th Brigades formed part of the island's garrison at the time of the raid but did not see action.

Defence of Australia

After the fall of Singapore the Australian Government and many Australians feared that Japan would invade the Australian mainland. Australia was ill-prepared to counter such an attack as the RAAF lacked modern aircraft and the RAN was too small and unbalanced to counter the Imperial Japanese Navy. Additionally, the Army, although large, contained many inexperienced units and lacked mobility. In response to this threat most of the AIF was brought back from the Middle East and the Government appealed to the United States for assistance. British Prime Minister Winston Churchill
Winston Churchill
Sir Winston Leonard Spencer-Churchill, was a predominantly Conservative British politician and statesman known for his leadership of the United Kingdom during the Second World War. He is widely regarded as one of the greatest wartime leaders of the century and served as Prime Minister twice...

 attempted to divert the 6th and 7th Divisions to Burma while they were en-route to Australia, but Curtin refused to authorise this movement. As a compromise two brigades of the 6th Division disembarked at Ceylon and formed part of the island's garrison until they returned to Australia in August 1942.
The perceived threat of invasion led to a major expansion of the Australian military. By mid-1942 the Army had a strength of ten infantry divisions, three armoured divisions
Australian Armoured Units of World War II
Armoured units made a relatively small, but important, contribution to Australia’s war effort during World War II. While Australia formed three armoured divisions and two independent armoured brigades during the war, Australian armoured units only saw action as independent regiments and companies...

 and hundreds of other units. The RAAF and RAN were also greatly expanded, though it took years for these services to build up to their peak strengths. Thousands of Australians who were ineligible for service in the military responded to the threat of attack by joining auxiliary
Auxiliaries
An auxiliary force is a group affiliated with, but not part of, a military or police organization. In some cases, auxiliaries are armed forces operating in the same manner as regular soldiers...

 organisations such as the Volunteer Defence Corps
Volunteer Defence Corps (Australia)
The Volunteer Defence Corps was an Australian part time volunteer military force of World War II modelled on the British Home Guard. The VDC was established in July 1940 by the Returned and Services League of Australia and was initially composed of ex-servicemen who had served in World War I...

 and Volunteer Air Observers Corps
Volunteer Air Observers Corps (Australia)
The Volunteer Air Observers Corps was an Australian air defence organisation of World War II. The VAOC was formed on 31 December 1941 to support the Royal Australian Air Force by sighting and observing aircraft over Australia. The VAOC swiftly established observation posts across Australia and...

, which were modelled on the British Home Guard
British Home Guard
The Home Guard was a defence organisation of the British Army during the Second World War...

 and Royal Observer Corps
Royal Observer Corps
The Royal Observer Corps was a civil defence organisation operating in the United Kingdom between 29 October 1925 and 31 December 1995, when the Corps' civilian volunteers were stood down....

 respectively. Australia's population and industrial base were not sufficient to maintain these forces once the threat of invasion had passed, and the Army was progressively reduced in size from 1943 while only 53 of the 73 RAAF squadrons approved by the government were ever raised.

Despite Australian fears, the Japanese never intended to invade the Australian mainland. While an invasion was considered by the Japanese Imperial General Headquarters
Imperial General Headquarters
The as part of the Supreme War Council was established in 1893 to coordinate efforts between the Imperial Japanese Army and Imperial Japanese Navy during wartime...

 in February 1942, it was judged to be beyond the Japanese military's capabilities and no planning or other preparations were undertaken. Instead, in March 1942 the Japanese military adopted a strategy of isolating Australia from the United States by capturing Port Moresby
Port Moresby
Port Moresby , or Pot Mosbi in Tok Pisin, is the capital and largest city of Papua New Guinea . It is located on the shores of the Gulf of Papua, on the southeastern coast of the island of New Guinea, which made it a prime objective for conquest by the Imperial Japanese forces during 1942–43...

 in New Guinea and the Solomon Islands
Solomon Islands
Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...

, Fiji
Fiji
Fiji , officially the Republic of Fiji , is an island nation in Melanesia in the South Pacific Ocean about northeast of New Zealand's North Island...

, Samoa
Samoa
Samoa , officially the Independent State of Samoa, formerly known as Western Samoa is a country encompassing the western part of the Samoan Islands in the South Pacific Ocean. It became independent from New Zealand in 1962. The two main islands of Samoa are Upolu and one of the biggest islands in...

 and New Caledonia
New Caledonia
New Caledonia is a special collectivity of France located in the southwest Pacific Ocean, east of Australia and about from Metropolitan France. The archipelago, part of the Melanesia subregion, includes the main island of Grande Terre, the Loyalty Islands, the Belep archipelago, the Isle of...

. This plan was frustrated by the Japanese defeat in the Battle of the Coral Sea
Battle of the Coral Sea
The Battle of the Coral Sea, fought from 4–8 May 1942, was a major naval battle in the Pacific Theater of World War II between the Imperial Japanese Navy and Allied naval and air forces from the United States and Australia. The battle was the first fleet action in which aircraft carriers engaged...

 and was postponed indefinitely after the Battle of Midway
Battle of Midway
The Battle of Midway is widely regarded as the most important naval battle of the Pacific Campaign of World War II. Between 4 and 7 June 1942, approximately one month after the Battle of the Coral Sea and six months after Japan's attack on Pearl Harbor, the United States Navy decisively defeated...

. While these battles ended the threat to Australia, the Australian government continued to warn that an invasion was possible until mid-1943.
The collapse of British power in the Pacific also led Australia to reorient its foreign and military policy towards the United States. In February 1942 the US and British Governments agreed that Australia would become a strategic responsibility of the United States and the Allied ANZAC Force
ANZAC Force
The ANZAC Force, also called the ANZAC Command, was a short-lived naval military command for Allied forces defending northeast Australia and the surrounding area in early 1942 during the Pacific Campaign of World War II. The command was created on 27 January 1942. United States Navy Vice Admiral...

 was created specifically to defend the Australian continent. In March, General Douglas MacArthur
Douglas MacArthur
General of the Army Douglas MacArthur was an American general and field marshal of the Philippine Army. He was a Chief of Staff of the United States Army during the 1930s and played a prominent role in the Pacific theater during World War II. He received the Medal of Honor for his service in the...

 arrived in Australia after escaping from the Philippines and assumed command of the South West Pacific Area
South West Pacific theatre of World War II
The South West Pacific Theatre, technically the South West Pacific Area, between 1942 and 1945, was one of two designated area commands and war theatres enumerated by the Combined Chiefs of Staff of World War II in the Pacific region....

 (SWPA). All of the Australian military's combat units in this area were placed under MacArthur's command, and MacArthur replaced the Australian Chiefs of Staff as the Australian Government's main source of military advice until the end of the war. Australian General Thomas Blamey was appointed the Allied land force commander, but MacArthur did not permit him to command American forces. MacArthur also rejected US Army Chief of Staff
Chief of Staff of the United States Army
The Chief of Staff of the Army is a statutory office held by a four-star general in the United States Army, and is the most senior uniformed officer assigned to serve in the Department of the Army, and as such is the principal military advisor and a deputy to the Secretary of the Army; and is in...

 General George Marshall's
George Marshall
George Catlett Marshall was an American military leader, Chief of Staff of the Army, Secretary of State, and the third Secretary of Defense...

 request that he appoint Australians to senior posts in his General Headquarters. Nevertheless, the partnership between Curtin and MacArthur proved beneficial for Australia between 1942 and 1944 as MacArthur was able to communicate Australian requests for assistance to the US Government.

Large numbers of United States military personnel were based in Australia during the first years of the Pacific War. The first US units arrived in Australia in early 1942 and almost 1 million US personnel passed through Australia during the war. Many US military bases were constructed in northern Australia during 1942 and 1943, and Australia remained an important source of supplies to US forces in the Pacific until the end of the war. Relations between Australians and Americans were generally good, though there was some conflict between US and Australian soldiers and the Australian Government only reluctantly accepted the presence of African American
African American
African Americans are citizens or residents of the United States who have at least partial ancestry from any of the native populations of Sub-Saharan Africa and are the direct descendants of enslaved Africans within the boundaries of the present United States...

 troops.

Papuan campaign

Japanese forces first landed on the mainland of New Guinea on 8 March 1942 when they made landed at Lae and Salamaua
Invasion of Lae-Salamaua
The Invasion of Lae-Salamaua, called Operation SR by the Japanese, was an operation by Imperial Japanese forces to occupy the Salamaua-Lae area in the Territory of New Guinea 8–13 March 1942 during the Pacific campaign of World War II...

 to secure bases for the defence of the important base they were developing at Rabaul. Australian guerrillas from the New Guinea Volunteer Rifles
New Guinea Volunteer Rifles
The New Guinea Volunteer Rifles was an infantry battalion of the Australian Army. It was initially raised as unit of the Militia in New Guinea upon the outbreak of World War II in 1939 and saw active service against the Japanese during the conflict before being disbanded in 1943...

 established observation posts around the Japanese beachheads and the 2/5th Independent Company successfully raided Salamaua
Salamaua
Salamaua was a small town situated on the north-eastern coastline of Papua New Guinea part of Morobe province. The settlement was built on a minor isthmus between the coast with mountains on the inland side and a headland...

 on 29 June.
After the Battle of the Coral Sea frustrated the Japanese plan to capture Port Morseby via an amphibious landing, the Japanese attempted to capture the town by landing the South Seas Force at Buna on the north coast of Papua and advancing overland using the Kokoda Track
Kokoda Track
The Kokoda Trail or Track is a single-file foot thoroughfare that runs overland — in a straight line — through the Owen Stanley Range in Papua New Guinea...

 to cross the rugged Owen Stanley Range
Owen Stanley Range
Owen Stanley Range is the south-eastern part of the central mountain-chain in Papua New Guinea. It was seen in 1849 by Captain Owen Stanley while surveying the south coast of Papua and named after him. Strictly, the eastern extremity of the range is Mount Victoria , which was climbed by Sir William...

. The Kokoda Track campaign
Kokoda Track campaign
The Kokoda Track campaign or Kokoda Trail campaign was part of the Pacific War of World War II. The campaign consisted of a series of battles fought between July and November 1942 between Japanese and Allied—primarily Australian—forces in what was then the Australian territory of Papua...

 began on 22 July when the Japanese began their advance, opposed by an ill-prepared CMF brigade designated 'Maroubra Force
Maroubra Force
Maroubra Force was the name given to the Australian infantry force that defended Port Moresby, Papua New Guinea from the Japanese, and was involved in the Kokoda Track Campaign of the Pacific War, World War II...

'. This force was successful in delaying the South Seas Force but was unable to halt it. Two AIF battalions from the 7th Division reinforced the remnants of Maroubra Force on 26 August but the Japanese continued to make ground and reached the village of Ioribaiwa near Port Moresby on 16 September. The South Seas Force was forced to withdraw back along the track on this day, however, as supply problems made any further advance impossible and an Allied counter-landing at Buna was feared. Australian forces pursued the Japanese along the Kokoda Track and forced them into a small bridgehead
Bridgehead
A bridgehead is a High Middle Ages military term, which antedating the invention of cannons was in the original meaning expressly a referent term to the military fortification that protects the end of a bridge...

 on the north coast of Papua in early November. The Allied operations on the Kokoda Track were made possible by native Papuans who were recruited by the Australian New Guinea Administrative Unit
Australian New Guinea Administrative Unit
The Australian New Guinea Administrative Unit was a civil administration of Territory of Papua and the Mandated Territory of New Guinea formed on 21 March 1942 during World War II...

, often forcibly, to carry supplies and evacuate wounded personnel. The RAAF and USAAF also played an important role throughout the campaign by attacking the Japanese force's supply lines and airdrop
Airdrop
An airdrop is a type of airlift, developed during World War II to resupply otherwise inaccessible troops, who themselves may have been airborne forces. In some cases, it is used to refer to the airborne assault itself. Early airdrops were conducted by dropping or pushing padded bundles from...

ping supplies to Australian Army units.
Australian forces also defeated an attempt to capture the strategic Milne Bay
Milne Bay
Milne Bay is a large bay in Milne Bay Province, southeastern Papua New Guinea. The bay is named after Sir Alexander Milne.The area was a site of the Battle of Milne Bay in 1942....

 area in August 1942. During the Battle of Milne Bay
Battle of Milne Bay
The Battle of Milne Bay, also known as Operation RE by the Japanese, was a battle of the Pacific campaign of World War II. Japanese marines attacked the Australian base at Milne Bay on the eastern tip of New Guinea on 25 August 1942, and fighting continued until the Japanese retreated on 5...

 two brigades of Australian troops, designated Milne Force, supported by two RAAF fighter squadrons and US Army engineers defeated a smaller Japanese invasion force made up of Japanese Special Naval Landing Forces
Japanese Special Naval Landing Forces
The Japanese Special Naval Landing Forces , were the marine troops of the Imperial Japanese Navy and were a part of the IJN Land Forces...

 units. This was the first notable Japanese land defeat and raised Allied morale across the Pacific Theatre.

Australian and US forces attacked the Japanese bridgehead in Papua
Battle of Buna-Gona
The Battle of Buna–Gona was a battle in the New Guinea campaign, a major part of the Pacific campaign of World War II. On 16 November 1942, Australian and United States forces attacked the main Japanese beachheads in New Guinea, at Buna, Sanananda and Gona. Both forces were riddled by disease and...

 in late November 1942 but did not capture it until January 1943. The Allied force comprised the exhausted 7th Division and the inexperienced and ill-trained US 32nd Infantry Division and was short of artillery and supplies. Due to a lack of supporting weapons and MacArthur and Blamey's insistence on a rapid advance the Allied tactics during the battle were centred around infantry assaults on the Japanese fortifications. These resulted in heavy casualties and the area was not secured until 22 January 1943.
Following the defeats in Papua and Guadalcanal
Guadalcanal
Guadalcanal is a tropical island in the South-Western Pacific. The largest island in the Solomons, it was discovered by the Spanish expedition of Alvaro de Mendaña in 1568...

 the Japanese withdrew to a defensive perimeter in the Territory of New Guinea
Territory of New Guinea
The Territory of New Guinea was the Australia-controlled, League of Nations-mandated territory in the north eastern part of the island of New Guinea, and surrounding islands, between 1920 and 1949...

. In order to secure their important bases at Lae
Lae
Lae, the capital of Morobe Province, is the second-largest city in Papua New Guinea. It is located at the start of the Highlands Highway which is the main land transport corridor from the Highlands region to the coast...

 and Salamaua they attempted to capture Wau
Battle of Wau
The Battle of Wau, 29–31 January 1943, was a battle in the New Guinea campaign of World War II. Forces of the Empire of Japan sailed from Rabaul and crossed the Solomon Sea and, despite Allied air attacks, successfully reached Lae, where they disembarked...

 in January 1943. Reinforcements were flown into the town and defeated the Japanese force in its outskirts following heavy fighting. The Japanese force began to withdraw towards the coast on 4 February. Following their defeat at Wau the Japanese attempted to reinforce Lae in preparation for an expected Allied offensive in the area. This ended in disaster when, during the Battle of the Bismark Sea, a troop convoy was destroyed by USAAF and RAAF aircraft from the US Fifth Air Force
Fifth Air Force
The Fifth Air Force is a numbered air force of the United States Air Force Pacific Air Forces . It is headquartered at Yokota Air Base, Japan....

 and No. 9 Operational Group RAAF
No. 9 Operational Group RAAF
No. 9 Operational Group was a major Royal Australian Air Force unit providing fighter, ground attack and anti-shipping support to the Allies in the South West Pacific theatre during World War II. It was designed to act as a mobile striking force independent of the RAAF's static area commands. As...

 with the loss of about 3,000 troops.

The Papuan campaign led to a significant reform in the composition of the Australian Army. During the campaign the restriction banning CMF personnel from serving outside of Australian territory hampered military planning and caused tensions between the AIF and CMF. In late 1942 and early 1943 Curtin overcame opposition within the Labor Party to extending the geographic boundaries in which conscripts could serve to include most of the South West Pacific
South West Pacific theatre of World War II
The South West Pacific Theatre, technically the South West Pacific Area, between 1942 and 1945, was one of two designated area commands and war theatres enumerated by the Combined Chiefs of Staff of World War II in the Pacific region....

 and the necessary legislation was passed in January 1943. The 11th Brigade
11th Brigade (Australia)
The Australian 11th Brigade is an Australian Army brigade which currently comprises most Australian Army Reserve units located in Queensland. The Brigade was first formed in early 1916 as part of the 3rd Division and saw action during World War I and World War II.-Brigade Structure:*Headquarters...

 was the only CMF formation to serve outside of Australian territory, however, when it formed part of Merauke Force
Merauke Force
Merauke Force was an Australian-led military force of World War II which was responsible for defending Merauke in the Netherlands East Indies . The force was established in late 1942 and was disbanded at the end of the war.-History:...

 in the NEI during 1943 and 1944.

Attacks on Australian shipping

The Japanese efforts to secure New Guinea included a prolonged submarine offensive against the Allied lines of communication between the United States and Australia and Australia and New Guinea. These were not the first Axis naval attacks on Australia; during 1940 and 1941 five German surface raiders
Armed merchantmen
Armed merchantman is a term that has come to mean a merchant ship equipped with guns, usually for defensive purposes, either by design or after the fact. In the days of sail, piracy and privateers, many merchantmen would be routinely armed, especially those engaging in long distance and high value...

 operated in Australian waters at various times. The German attacks were not successful in disrupting Australian merchant shipping, though Sydney was sunk with the loss her entire crew of 641 men in November 1941 in a battle with the German auxiliary cruiser Kormoran, off the coast of Western Australia.

Following the defeat of the Japanese surface fleet the IJN deployed submarines to disrupt Allied supply lines by attacking shipping off the Australian east coast. This campaign began with an unsuccessful midget submarine raid on Sydney Harbour
Attack on Sydney Harbour
In late May and early June 1942, during World War II, submarines belonging to the Imperial Japanese Navy made a series of attacks on the cities of Sydney and Newcastle in New South Wales, Australia...

 on the night of 31 May. Following this attack, Japanese submarines operated along the Australian east coast until August 1942, sinking eight merchant ships. The submarine offensive resumed in January 1943 and continued until June during which time a further 15 ships were sunk off the east coast. The 1943 sinkings included the hospital ship Centaur
AHS Centaur
Australian Hospital Ship Centaur was a hospital ship which was attacked and sunk by a Japanese submarine off the coast of Queensland, Australia, on 14 May 1943...

, which was torpedoed off Queensland on 14 May with the loss of 268 lives. The Japanese did not conduct further submarine attacks against Australia after June 1943 as their submarines were needed to counter Allied offensives elsewhere in the Pacific. A single German submarine, U-862
Unterseeboot 862
German submarine U-862 was a German Type IXD2 U-boat of the Kriegsmarine during World War II. She was the only German submarine to operate in the Pacific Ocean during World War II...

, operated in the Pacific Ocean during the war, cruising off the Australian coast and New Zealand in December 1944 and January 1945. It sank two ships in Australian waters before returning to Batavia
Jakarta
Jakarta is the capital and largest city of Indonesia. Officially known as the Special Capital Territory of Jakarta, it is located on the northwest coast of Java, has an area of , and a population of 9,580,000. Jakarta is the country's economic, cultural and political centre...

.

Considerable Australian and other Allied military resources were devoted to protecting shipping and ports from Axis submarines and warships. For instance, the RAN escorted over 1,100 coastal convoys the Army established coastal defences
Coastal defences of Australia during World War II
This list contains a List of Coastal Batteries in Australia and Territories during World War II. The main threat came early in the war from German raiders and threat of Japanese raids or invasion, and hence all available ordnance was pressed into service, including some obsolete guns and field guns...

 to protect important ports and a high proportion of the RAAF's operational squadrons were used to protect shipping at various times. Nevertheless, the use of these units for defensive tasks and the shipping casualties in Australian waters did not seriously affect the Australian economy or Allied war effort.

New Guinea offensives

After halting the Japanese advance, Allied forces went on the offensive across the SWPA from mid 1943. Australian forces played a key role throughout this offensive, which was designated Operation Cartwheel
Operation Cartwheel
Operation Cartwheel was a major military strategy for the Allies in the Pacific theater of World War II. Cartwheel was a twin-axis of advance operation, aimed at militarily neutralizing the major Japanese base at Rabaul...

. In particular, General Blamey oversaw a highly successful series of operations around the north-east tip of New Guinea which "was the high point of Australia’s experience of operational level command" during the war.
After the successful defence of Wau the 3rd Division began advancing towards Salamaua
Salamaua-Lae campaign
The Salamaua–Lae campaign was a series of actions in the New Guinea campaign of World War II. Australian and United States forces sought to capture two major Japanese bases, one in the town of Lae, and another one at Salamaua. The campaign to take the Salamaua and Lae area began with the Australian...

 in April 1943. This advance was mounted to divert attention from Lae, which was one of the main objectives of Operation Cartwheel, and proceeded slowly. In late June the 3rd Division was reinforced by the US 162nd Regimental Combat Team which staged an amphibious landing to the south of Salamaua
Landing at Nassau Bay
The Landing at Nassau Bay was an amphibious landing at Nassau Bay in the New Guinea campaign of World War II between June 30 - July 6, 1943. United States forces sought to capture a beachhead for a supply point to shorten the supply line for the proposed attack on Salamaua as part of the...

. The town was eventually captured on 11 September 1943.

In early September 1943 Australian-led forces mounted a pincer movement
Pincer movement
The pincer movement or double envelopment is a military maneuver. The flanks of the opponent are attacked simultaneously in a pinching motion after the opponent has advanced towards the center of an army which is responding by moving its outside forces to the enemy's flanks, in order to surround it...

 to capture Lae. On 4 September the 9th Division made an amphibious landing to the east of the town
Landing at Lae
The Landing at Lae was an amphibous landing, as part of ', to the east of Lae in the Salamaua-Lae campaign of World War II between 4–6 September 1943....

 and began advancing to the west. The following day, the US 503rd Parachute Regiment made an unopposed parachute drop
Landing at Nadzab
The Landing at Nadzab was an airborne landing on 5 September 1943 during the New Guinea campaign of World War II that began with a parachute drop at Nadzab in conjunction with the Landing at Lae....

 at Nadzab, just west of Lae. Once the airborne forces secured Nadzab Airfield the 7th Division was flown in and began advancing to the east in a race with the 9th Division to capture Lae. This race was won by the 7th Division, which captured the town on 15 September. The Japanese forces at Salamaua and Lae suffered heavy losses during this campaign, but were able to escape to the north.
After the fall of Lae the 9th Division was given the task of capturing the Huon Peninsula
Huon Peninsula campaign
The Huon Peninsula campaign was a series of battles in the New Guinea campaign of the Second World War. Australian forces assaulted Japanese bases on the Huon Peninsula....

. The 20th Brigade
20th Brigade (Australia)
The 20th Brigade was a brigade-sized infantry unit of the Australian Army. The brigade was raised for service during the World War II on 7 May 1940 as part of the 7th Division. The brigade was transferred to the 9th Division in 1941...

 landed near the strategic harbour of Finschhafen
Finschhafen
Finschhafen is a district on the northeast coast of the Morobe province of Papua New Guinea. It is named after the port of the same name.The port was discovered in 1884 by the German researcher Otto Finsch. In 1885 the German colony of German New Guinea created a town on the site and named it...

 on 22 September 1943 and secured the area. The Japanese responded by dispatching the 20th Division
20th Division (Imperial Japanese Army)
was an infantry division in the Imperial Japanese Army. Its call sign was the .-History:The 20th Division and the 19th Division were raised on 24 December 1915 as a garrison force for Korea. After Japan's victory in the Russo-Japanese War, and subsequent occupation, and then annexation of Korea,...

 overland to the area and the remainder of the 9th Division was gradually brought in to reinforce the 20th Brigade against the expected counter-attack. The Japanese mounted a strong attack in mid-October which was defeated by the 9th Division after heavy fighting. During the second half of November the 9th Division captured the hills
Battle of Sattelberg
The Battle of Sattelberg took place during the Huon Peninsula campaign of the Second World War. Involving forces from Australia, the United States and Japan, the fighting centred around the Sattelberg mission station which was situated atop a hill about above sea level, approximately inland from...

 inland of Finschhafen from well dug in Japanese forces. Following its defeat the 20th Division retreated along the coast with the 9th Division and 4th Brigade in pursuit
Battle of Sio
The Battle of Sio, fought between December 1943 and March 1944, was the breakout and pursuit phase of General Douglas MacArthur's Huon Peninsula campaign, part of the New Guinea campaign of World War II....

. The Allies scored a major intelligence victory towards the end of this campaign when Australian engineers found the 20th Division's entire cipher
Cipher
In cryptography, a cipher is an algorithm for performing encryption or decryption — a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. In non-technical usage, a “cipher” is the same thing as a “code”; however, the concepts...

 library, which had been buried by the retreating Japanese. These documents led to a code breaking
Cryptanalysis
Cryptanalysis is the study of methods for obtaining the meaning of encrypted information, without access to the secret information that is normally required to do so. Typically, this involves knowing how the system works and finding a secret key...

 breakthrough which enabled MacArthur to accelerate the Allied advance by bypassing Japanese defences.
While the 9th Division secured the coastal region of the Huon Peninsula the 7th Division drove the Japanese from the inland Finisterre Range
Finisterre Range
Finisterre Range is a mountain range in north-eastern Papua New Guinea, at . The unnamed highest point of the range , which is ranked 45th in the world by prominence, is usually quoted at 4,175 m, but SRTM data suggests that it is nearer to 4,120 m...

. The Finisterre Range campaign
Finisterre Range campaign
The Finisterre Range campaign, also known as the Ramu Valley–Finisterre Range campaign, was a series of actions in the New Guinea campaign of World War II...

 began on 17 September when the 2/6th Independent Company was air-landed in the Markham Valley. The company defeated a larger Japanese force
Battle of Kaiapit
The Battle of Kaiapit was an action fought in 1943 between Australian and Japanese forces in New Guinea during the Finisterre Range campaign of World War II. Following the landing at Nadzab and landing at Lae, the Allies attempted to exploit their success with an advance into the upper Markham...

 at Kaiapit and secured an airstrip which was used to fly the Division's 21st
21st Brigade (Australia)
The 21st Brigade was a brigade-sized infantry unit of the Australian Army. Formed in April 1940 as part of the Second Australian Imperial Force, the unit was raised for service during World War II...

 and 25th Brigades
25th Brigade (Australia)
The 25th Brigade was a brigade-sized infantry unit of the Australian Army that served during the Second World War. Raised in July 1940 and consisting of three infantry battalions, the 25th Brigade served in the United Kingdom, the Middle East, New Guinea and Borneo before being disbanded in...

 in. Through aggressive patrolling the Australians forced the Japanese out of positions in extremely rugged terrain and in January 1944 the division began its attack on the key Shaggy Ridge
Shaggy Ridge
Shaggy Ridge is a 6.5 kilometre -long, razorback ridge in the Finisterre Range, in north eastern Papua New Guinea. Its highest point is 1,494 metres above sea level...

 position. The ridge was taken by the end of January, with the RAAF playing a key supporting role. Following this success the Japanese withdrew from the Finisterre Range and Australian troops linked up with American patrols from Saidor
Landing at Saidor
The Landing at Saidor was an Allied amphibious landing at Saidor, Papua New Guinea on 2 January 1944 as part of Operation Dexterity during World War II. In Allied hands, Saidor was a stepping stone towards Madang, the ultimate objective of General Douglas MacArthur's Huon Peninsula campaign...

 on 21 April and secured Madang
Madang
Madang is the capital of Madang Province and is a town with a population of 27,420 on the north coast of Papua New Guinea. It was first settled by the Germans in the 19th century....

 on 24 April.

In addition to supporting the Army's operations on the New Guinea mainland, the RAN and RAAF took part in offensive operations in the Solomon Islands
Solomon Islands
Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...

. This involvement had begun in August 1942 when both of the RAN's heavy cruisers, and , supported the US Marine landing at Guadalcanal
Guadalcanal campaign
The Guadalcanal Campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by Allied forces, was a military campaign fought between August 7, 1942 and February 9, 1943 on and around the island of Guadalcanal in the Pacific theatre of World War II...

. On the night after the landing, Canberra was sunk during the Battle of Savo Island
Battle of Savo Island
The Battle of Savo Island, also known as the First Battle of Savo Island and, in Japanese sources, as the , was a naval battle of the Pacific Campaign of World War II, between the Imperial Japanese Navy and Allied naval forces...

 and the RAN played no further role in the Guadalcanal Campaign
Guadalcanal campaign
The Guadalcanal Campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by Allied forces, was a military campaign fought between August 7, 1942 and February 9, 1943 on and around the island of Guadalcanal in the Pacific theatre of World War II...

. RAAF aircraft supported several US Army and Marine landings during 1943 and 1944 and a RAAF radar unit participated in the capture of Arawe
Battle of Arawe
The Battle of Arawe was a battle during the New Britain Campaign of World War II. This campaign formed part of Operation Cartwheel and had the objective of isolating the key Japanese base at Rabaul. Arawe was attacked on 15 December 1943 by U.S...

. The Australian cruisers Australia and and destroyers and provided fire support for the US 1st Marine Division during the Battle of Cape Gloucester
Battle of Cape Gloucester
The Battle of Cape Gloucester was a battle in the Pacific theater of World War II, which took place between late December 1943 and April 1944, on the island of New Britain, part of the Territory of New Guinea....

 and the US 1st Cavalry Division during the Admiralty Islands campaign
Admiralty Islands campaign
The Admiralty Islands campaign was a series of battles in the New Guinea campaign of World War II in which the United States Army's 1st Cavalry Division occupied the Japanese-held Admiralty Islands....

 in late 1943 and early 1944. The landing at Cape Gloucester was also the first operation for the RAN amphibious transport .

North Western Area Campaign

The attack on Darwin in February 1942 marked the start of a prolonged aerial campaign over northern Australia and the Japanese-occupied Netherlands East Indies. Following the first attack on Darwin the Allies rapidly deployed fighter squadrons and reinforced the Army's Northern Territory Force
Northern Territory Force
Northern Territory Force was an Australian Army force responsible for protecting the Northern Territory during World War II. Most units assigned to the Northern Territory Force were based near Darwin and were responsible for defending the important naval and air bases in and around the town against...

 to protect the town from a feared invasion. These air units also attacked Japanese positions in the NEI and the Japanese responded by staging dozens of air raids on Darwin and nearby airfields during 1942 and 1943, few of which caused significant damage. These raids were opposed by US, Australian and British fighters and suffered increasingly heavy casualties as Darwin's defences were improved. The Japanese also conducted a number of small and ineffective raids on towns and airfields in northern Queensland and Western Australia during 1942 and 1943.

While the Japanese raids on northern Australia ceased in late 1943, the Allied air offensive continued until the end of the war. During late 1942 Allied aircraft conducted attacks on Timor in support of the Australian guerrillas operating there. From early 1943 United States heavy bomber
Heavy bomber
A heavy bomber is a bomber aircraft of the largest size and load carrying capacity, and usually the longest range.In New START, the term "heavy bomber" is used for two types of bombers:*one with a range greater than 8,000 kilometers...

 squadrons operated against Japanese targets in the eastern NEI from bases near Darwin. The Allied air offensive against the NEI intensified from June 1943 in order to divert Japanese forces away from New Guinea and the Solomons and involved Australian, Dutch and United States bomber units. These attacks continued until the end of the war, with the US heavy bombers being replaced by Australian B-24 Liberator
B-24 Liberator
The Consolidated B-24 Liberator was an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and a small number of early models were sold under the name LB-30, for Land Bomber...

-equipped squadrons in late 1944. From 1944 several RAAF PBY Catalina
PBY Catalina
The Consolidated PBY Catalina was an American flying boat of the 1930s and 1940s produced by Consolidated Aircraft. It was one of the most widely used multi-role aircraft of World War II. PBYs served with every branch of the United States Armed Forces and in the air forces and navies of many other...

 squadrons were also based at Darwin and conducted highly effective mine-laying sorties across South East Asia.

Advance to the Philippines

The Australian military's role in the South-West Pacific decreased during 1944. In the latter half of 1943 the Australian Government decided, with MacArthur's agreement, that the size of the military would be decreased to release manpower for war-related industries which were important to supplying Britain and US forces in the Pacific. Australia's main role in the Allied war effort from this point forward was supplying the other Allied countries with food, materials and manufactured goods needed for the defeat of Japan. As a result of this policy, all but two of the Army's divisions were withdrawn to the Atherton Tableland
Atherton Tableland
The Atherton Tableland is a fertile plateau which is part of the Great Dividing Range in Queensland, Australia. It is located west to south-south-west inland from Cairns, well into the tropics, but its elevated position provides a climate suitable for dairy farming. It has an area of around...

 for training and rehabilitation and the size of the RAAF and RAN were capped. Several new battalions of Australian-led Papuan and New Guinea troops were formed during 1944 and organised into the Pacific Islands Regiment
Royal Pacific Islands Regiment
The Royal Pacific Islands Regiment is an infantry regiment of the Papua New Guinea Defence Force . The regiment is descended from the Australian Army infantry battalions formed from native soldiers and Australian officers and non-commissioned officers in the territories of Papua and New Guinea...

, however, and largely replaced the Australian Army battalions disbanded during the year. These troops had seen action alongside Australian units throughout the New Guinea campaign.
After the liberation of most of Australian New Guinea the RAAF and RAN participated in the US-led Western New Guinea campaign
Western New Guinea campaign
The Western New Guinea campaign was a series of actions in the New Guinea campaign of World War II. United States and Australian forces assaulted Japanese bases and positions in the northwest coastal areas of Netherlands New Guinea and adjoining parts of the Australian Territory of New Guinea...

 which had the goal of securing bases to be used to mount the liberation of the Philippines. Australian warships and the fighter, bomber and airfield construction squadrons of No. 10 Operational Group RAAF
Australian First Tactical Air Force
The Australian First Tactical Air Force was formed on 25 October 1944 by the Royal Australian Air Force . Its purpose was to provide a mobile force of fighter and ground attack aircraft that could support Allied army and naval units fighting the Empire of Japan in the South West Pacific Area...

 participated in the capture of Hollandia
Operations Reckless and Persecution
Operation Reckless, known as the Landing at Hollandia and Operation Persecution known as the Aitape landing, were Allied amphibious landings which commenced the Western New Guinea campaign. Both operations commenced on 22 April 1944....

, Biak
Battle of Biak
The Battle of Biak was part of the New Guinea campaign of World War II. It was fought between the United States Army and the Japanese Army from May 27 to June 22, 1944. It was the first major tactical use of an ambush by the Japanese during the war....

, Noemfoor
Battle of Noemfoor
The Battle of Noemfoor was a battle of World War II that took place on the island of Noemfoor, in Dutch New Guinea, between 2 July and 31 August 1944. United States and Australian forces attacked to capture Japanese bases on the island.-Background:...

 and Morotai
Battle of Morotai
The Battle of Morotai, part of the Pacific War, began on September 15, 1944, and continued until the war ended in August 1945. The fighting began when United States and Australian forces landed on the south-west corner of Morotai, a small island in the Netherlands East Indies , which the Allies...

. After western New Guinea was secured No. 10 Operation Group was renamed the First Tactical Air Force (1TAF) and was used to protect the flank of the Allied advance by attacking Japanese positions in the NEI and performing other garrison tasks. The losses incurred performing these relatively unimportant roles led to a decline in morale, and contributed to the 'Morotai Mutiny'
Morotai Mutiny
The "Morotai Mutiny" was an incident in April 1945 involving members of the Australian First Tactical Air Force based on the island of Morotai, in the Dutch East Indies...

 in April 1945.

Elements of the RAN and RAAF also took part in the liberation of the Philippines. Four Australian warships and the assault transports , and Westralia—along with a number of smaller warships and support ships—took part in the US landing at Leyte
Battle of Leyte
The Battle of Leyte in the Pacific campaign of World War II was the invasion and conquest of the island of Leyte in the Philippines by American and Filipino guerrilla forces under the command of General Douglas MacArthur, who fought against the Imperial Japanese Army in the Philippines led by...

 on 20 October 1944. Australian sources state that Australia became the first Allied ship to be struck by a kamikaze
Kamikaze
The were suicide attacks by military aviators from the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, designed to destroy as many warships as possible....

 when she was attacked during this operation on 21 October, though this claim was disputed by US historian Samuel Eliot Morison
Samuel Eliot Morison
Samuel Eliot Morison, Rear Admiral, United States Naval Reserve was an American historian noted for his works of maritime history that were both authoritative and highly readable. He received his Ph.D. from Harvard University in 1912, and taught history at the university for 40 years...

. Australian ships also participated in the Battle of Leyte Gulf
Battle of Leyte Gulf
The Battle of Leyte Gulf, also called the "Battles for Leyte Gulf", and formerly known as the "Second Battle of the Philippine Sea", is generally considered to be the largest naval battle of World War II and, by some criteria, possibly the largest naval battle in history.It was fought in waters...

, with Shropshire and Arunta engaging Japanese ships during the Battle of Surigao Strait on 25 October. The Australian naval force took part in the Invasion of Lingayen Gulf
Invasion of Lingayen Gulf
The Liberation of Lingayen Gulf was an Allied amphibious operation in the Philippines during World War II. In the early morning of 9 January 1945, an Allied force commanded by Admiral Jesse B. Oldendorf began approaching the shores of Lingayen. U.S...

 in January 1945. During this operation Australia was struck by a further five Kamikazes which killed 44 of her crew and forced her to withdraw for major repairs. RAN ships also escorted US supply convoys bound for the Philippines. The RAAF's No. 3 Airfield Construction Squadron and No. 1 Wireless Unit were also landed in the Philippines and supported US operations there and 1TAF raided targets in the southern Philippines from bases in the NEI and New Guinea.

While the Australian Government offered I Corps for use in Leyte and Luzon, nothing came of several proposals to utilise it in the liberation of these islands. The Army's prolonged period of relative inactivity during 1944 led to public concern, and many Australians believed that the AIF should be demobilised if it could not be used for offensive operations. This was politically embarrassing for the government, and helped motivate it to look for new areas where the military could be used.

Mopping up in New Guinea and the Solomons

In late 1944, the Australian Government committed twelve Australian Army brigades to replace six US Army divisions which were conducting defensive roles in Bougainville
Bougainville Island
Bougainville Island is the main island of the Autonomous Region of Bougainville of Papua New Guinea. This region is also known as Bougainville Province or the North Solomons. The population of the province is 175,160 , which includes the adjacent island of Buka and assorted outlying islands...

, New Britain
New Britain
New Britain, or Niu Briten, is the largest island in the Bismarck Archipelago of Papua New Guinea. It is separated from the island of New Guinea by the Dampier and Vitiaz Straits and from New Ireland by St. George's Channel...

 and the Aitape-Wewak area in New Guinea. While the US units had largely conducted a static defence of their positions, their Australian replacements mounted offensive operations designed to destroy the remaining Japanese forces in these areas. The value of these campaigns was controversial at the time and remains so to this day. The Australian Government authorised these operations for primarily political reasons. It was believed that keeping the Army involved in the war would give Australia greater influence in any post-war peace conferences and that liberating Australian territories would enhance Australia's influence in its region. Critics of these campaigns argue that they were unnecessary and wasteful of the lives of the Australian soldiers involved as the Japanese forces were already isolated and ineffective.
The 5th Division replaced the US 40th Infantry Division on New Britain during October and November 1944 and continued the New Britain Campaign with the goals of protecting Allied bases and confining the large Japanese force on the island to the area around Rabaul. In late November the 5th Division established bases closer to the Japanese perimeter and began aggressive patrols supported by the Allied Intelligence Bureau
Allied Intelligence Bureau
The Allied Intelligence Bureau was an joint United States, Australian, Dutch and British intelligence and special operations agency during World War II. It was responsible for operating parties of spies and commandos behind Japanese lines in order to collect intelligence and conduct guerrilla...

. The division conducted amphibious landings at Open Bay and Wide Bay at the base of the Gazelle Peninsula
Gazelle Peninsula
Gazelle Peninsula is a large peninsula in northeastern New Britain, Papua New Guinea, at ....

 in early 1945 and defeated the small Japanese garrisons in these areas. By April the Japanese had been confined to their fortified positions in the Gazelle Peninsula by the Australian force's aggressive patrolling. The 5th Division suffered 53 fatalities and 140 wounded during this campaign. After the war it was found that the Japanese force was 93,000 strong, which was much higher than the 38,000 which Allied intelligence had estimated remained on New Britain.

The II Corps
Australian II Corps
The Australian II Corps was an Australian Army corps. II Corps was established in early 1942 to command Australian Army units deployed to protect the Sydney region and later commanded operational units in New Guinea, Bougainville and New Britain...

 continued the Bougainville campaign after it replaced the US Army's XIV Corps between October and December 1944. The corps consisted of the 3rd Division, 11th Brigade and Fiji Infantry Regiment
Fiji Infantry Regiment
The Fiji Infantry Regiment is the main combat element of the Fijian military. It is a light infantry regiment consisting of six battalions, of which three are regular army and three are Territorial Force. The regiment was formed with the foundation of the Fijian armed forces in 1920, which came...

 on Bougainville and the 23rd Brigade which garrisoned neighbouring islands and was supported by RAAF, RNZAF
Royal New Zealand Air Force
The Royal New Zealand Air Force is the air arm of the New Zealand Defence Force...

 and USMC air units. While the XIV Corps had maintained a defensive posture, the Australians conducted offensive operations aimed at destroying the Japanese force on Bougainville. As the Japanese were split into several enclaves the II Corps fought geographically separated campaigns in the north, centre and southern portions of the island. The main focus was against the Japanese base at Buin in the south, and the offensives in the north and centre of the island were largely suspended from May 1945. While Australian operations on Bougainville continued until the end of the war, large Japanese forces remained at Buin and in the north of the island.

The 6th Division was assigned responsibility for completing the destruction
Aitape-Wewak campaign
The Aitape–Wewak campaign was one of the final campaigns of the Pacific Theatre of World War II. Between November 1944 and the end of the war in August 1945, the Australian 6th Division, with air and naval support, fought the Imperial Japanese 18th Army in northern New Guinea...

 of the Japanese Eighteenth Army, which was the last large Japanese force remaining in the Australian portion of New Guinea. The division was reinforced by CMF and armoured units and began arriving at Aitape
Aitape
Aitape is a small town of about 8,000 people on the north coast of Papua New Guinea in the Sandaun Province. It is a coastal settlement that is almost equidistant from the provincial capitals of Wewak and Vanimo, and marks the midpoint of the highway between these two capitals...

 in October 1944. The 6th Division was also supported by several RAAF squadrons and RAN warships. In late 1944 the Australians launched a two-pronged offensive to the east towards Wewak
Wewak
Wewak is the capital of the East Sepik province of Papua New Guinea. It is located on the northern coast of the island of New Guinea. It is the largest town between Madang and Jayapura. It is the see city of the Roman Catholic Diocese of Wewak....

. The 17th Brigade advanced through the inland Torricelli Mountains
Torricelli Mountains
Torricelli Mountains is a mountain range in Sandaun Province, northwestern Papua New Guinea. The highest peak in the range is Mount Sulen at 1650 meters. The Bewani Mountains are located to the west, and the Prince Alexander Mountains are located to the east...

 while the remainder of the division moved along the coast. Although the Eighteenth Army had suffered heavy casualties from previous fighting and disease, it mounted a strong resistance and inflicted significant casualties. The 6th Division's advance was also hampered by supply difficulties and bad weather. The Australians secured the coastal area by early May, with Wewak being captured on 10 May after a small force was landed to the east of the town. By the end of the war the Eighteenth Army had been forced into what it had designated its 'last stand' area which was under attack from the 6th Division. The Aitape-Wewak campaign cost Australia 442 lives while about 9,000 Japanese died and another 269 were taken prisoner.

Borneo Campaign

The Borneo Campaign of 1945
Borneo campaign (1945)
The Borneo Campaign of 1945 was the last major Allied campaign in the South West Pacific Area, during World War II. In a series of amphibious assaults between 1 May and 21 July, the Australian I Corps, under General Leslie Morshead, attacked Japanese forces occupying the island. Allied naval and...

 was the last major Allied campaign in the SWPA. In a series of amphibious assaults between 1 May and 21 July, the Australian I Corps, under Lieutenant General Leslie Morshead
Leslie Morshead
Lieutenant General Sir Leslie James Morshead KCB, KBE, CMG, DSO, ED was an Australian soldier, teacher, businessman, and farmer, with a distinguished military career that spanned both world wars...

, attacked Japanese forces occupying the island. Allied naval and air forces, centred on the US 7th Fleet under Admiral Thomas Kinkaid, 1TAF and the US Thirteenth Air Force
Thirteenth Air Force
The Thirteenth Air Force is a numbered air force of the United States Air Force Pacific Air Forces . It is headquartered at Hickam Air Force Base on the island of Oahu, Hawaii. 13 AF has never been stationed in the continental United States...

 also played important roles in the campaign. The goals of this campaign were to capture Borneo's oilfields and Brunei Bay
Brunei Bay
Brunei Bay is the gateway to Brunei and Borneo. It is located 4°45'-5°02'N, 114°58'-115°10'E; east of Bandar Seri Begawan. The Brunei portion of the bay is in two sections separated by a finger of Sarawak about 6km wide at the coast...

 to support the US-led invasion of Japan and British-led liberation of Malaya
Operation Zipper
During the Second World War, Operation Zipper was a British plan to capture either Port Swettenham or Port Dickson, Malaya as staging areas for the recapture of Singapore. However, due to the end of the war in the Pacific, it was never fully executed. Some of the proposed landings on Penang went...

 which were planned to take place later in 1945. The Australian Government did not agree to MacArthur's proposal to extend the offensive to include the liberation of Java in July 1945, however, and its decision to not release the 6th Division for this operation contributed to it not going ahead.

The campaign opened on 1 May 1945 when the 26th Brigade Group
26th Brigade (Australia)
The Australian 26th Brigade was an Australian Army infantry brigade of World War II. The 26th Brigade was raised in 1940 and formed part of the 9th Division throughout the war. The 26th Brigade saw action in North Africa, New Guinea and Tarakan Island...

 landed on the small island of Tarakan
Tarakan Island
Tarakan is an island off the coast of East Kalimantan, Indonesia. It is a marshy island situated in the eastern Celebes Sea, off the northeastern coast of Borneo. The island occupies an area of .-Petroleum:...

 off the east coast of Borneo. The goal of this operation was to secure the island's airstrip as a base to support the planned landings at Brunei
Brunei
Brunei , officially the State of Brunei Darussalam or the Nation of Brunei, the Abode of Peace , is a sovereign state located on the north coast of the island of Borneo, in Southeast Asia...

 and Balikpapan
Balikpapan
Balikpapan is a seaport city on the eastern coast of the island of Borneo, Indonesia, in the East Kalimantan province, a resource-rich region well known for its timber, mining, and petroleum export products. Two harbors, Semayang and Kariangau , and the Sepinggan International Airport are the main...

. While it had been expected that it would take only a few weeks to secure Tarakan and re-open the airstrip, intensive fighting on the island
Battle of Tarakan (1945)
The Battle of Tarakan was the first stage in the Borneo campaign of 1945. It began with an amphibious landing by Australian forces on 1 May, code-named Operation Oboe One...

 lasted until 19 June and the airstrip was not opened until 28 June. As a result, the operation is generally considered to have not been worthwhile.
The second phase of the Borneo Campaign began on 10 June when the 9th Division conducted simultaneous assaults on the north-west on the island of Labuan
Labuan
Labuan is a federal territory in East Malaysia. It is an island off the coast of the state of Sabah. Labuan's capital is Victoria and is best known as an offshore financial centre offering international financial and business services via Labuan IBFC since 1990 as well as being an offshore support...

 and the coast of Brunei. While Brunei was quickly secured, the Japanese garrison on Labuan held out for over a week. After the Brunei Bay
Brunei Bay
Brunei Bay is the gateway to Brunei and Borneo. It is located 4°45'-5°02'N, 114°58'-115°10'E; east of Bandar Seri Begawan. The Brunei portion of the bay is in two sections separated by a finger of Sarawak about 6km wide at the coast...

 region was secured the 24th Brigade
24th Brigade (Australia)
The 24th Brigade was a brigade-sized infantry unit of the Australian Army. Formed on 1 July 1940 as part of the Second Australian Imperial Force, the unit was raised for service during World War II. Originally formed as part of the 8th Division the brigade was subsequently transferred to the newly...

 was landed in North Borneo
Battle of North Borneo
The Battle of North Borneo took place during the Second World War between Allied and Japanese forces. Part of the wider Borneo campaign of the Pacific War, it was fought between 10 June and 15 August 1945 in North Borneo...

 and the 20th Brigade advanced along the western coast of Borneo south from Brunei. Both brigades rapidly advanced against weak Japanese resistance and most of north-west Borneo was liberated by the end of the war. During the campaign the 9th Division was assisted by indigenous fighters who were waging a guerrilla war against Japanese forces with the support of Australian special forces.

The third and final stage of the Borneo Campaign was the capture of Balikpapan on the central east coast of the island. This operation had been opposed by General Blamey, who believed that it was unnecessary, but went ahead on the orders of Macarthur. After a 20-day preliminary air and naval bombardment the 7th Division landed near the town on 1 July. Balikpapan and its surrounds were secured after some heavy fighting
Battle of Balikpapan (1945)
The Battle of Balikpapan was the concluding stage of the Borneo campaign . The landings took place on 1 July 1945. The Australian 7th Division, composed of the 18th, 21st and 25th Infantry Brigades, with support troops, made an amphibious landing, codenamed Operation Oboe Two a few miles north of...

 on 21 July but mopping up continued until the end of the war. The capture of Balikpapan was the last large-scale land operation conducted by the Western Allies during World War II. Although the Borneo Campaign was criticised in Australia at the time, and in subsequent years, as pointless or a waste of the lives of soldiers, it did achieve a number of objectives, such as increasing the isolation of significant Japanese forces occupying the main part of the Dutch East Indies
Dutch East Indies
The Dutch East Indies was a Dutch colony that became modern Indonesia following World War II. It was formed from the nationalised colonies of the Dutch East India Company, which came under the administration of the Netherlands government in 1800....

, capturing major oil supplies and freeing Allied prisoners of war, who were being held in deteriorating conditions.

Australia's leadership changed again during the Borneo Campaign. Prime Minister Curtin suffered a heart attack in November 1944 and Deputy Prime Minister
Deputy Prime Minister of Australia
The Deputy Prime Minister of the Commonwealth of Australia is the second-most senior officer in the Government of Australia. The Deputy Prime Ministership has been a ministerial portfolio since 1968, and the Deputy Prime Minister is appointed by the Governor-General on the advice of the Prime...

 Frank Forde
Frank Forde
Francis Michael Forde PC was an Australian politician and the 15th Prime Minister of Australia. He was the shortest serving Prime Minister in Australia's history, being in office for only eight days.-Early life:...

 acted in his place until 22 January 1945. Curtin was hospitalised with another bout of illness in April 1945 and Treasurer
Treasurer of Australia
The Treasurer of Australia is the minister in the Government of Australia responsible for government expenditure and revenue raising. He is the head of the Department of the Treasury. The Treasurer plays a key role in the economic policy of the government...

 Ben Chifley
Ben Chifley
Joseph Benedict Chifley , Australian politician, was the 16th Prime Minister of Australia. He took over the Australian Labor Party leadership and Prime Ministership after the death of John Curtin in 1945, and went on to retain government at the 1946 election, before being defeated at the 1949...

 became acting Prime Minister as Forde was attending the San Francisco Conference. Curtin died on 5 July 1945 and Forde was sworn in as Prime Minister. Forde did not have the support of his party, however, and was replaced by Chifley after a leadership ballot was held on 13 July.

Intelligence and special forces

Australia developed large intelligence services during the war. Prior the outbreak of war the Australian military possessed almost no intelligence gathering facilities and was reliant on information passed on by the British intelligence services. Several small signals intelligence units were established in 1939 and 1940, which had some success intercepting and deciphering Japanese transmissions before the outbreak of the Pacific War.

MacArthur began organising large scale intelligence services shortly after his arrival in Australia. On 15 April 1942, the joint Australian-US Central Bureau
Central Bureau
The Central Bureau was one of two Allied Sigint organisations in the South West Pacific area during World War II. Central Bureau was attached to the HQ of the Allied Commander of the South West Pacific area, Douglas MacArthur. The other unit was the joint RAN/USN Fleet Radio Unit, Melbourne ,...

 signals intelligence organisation was established at Melbourne. Central Bureau's headquarters moved to Brisbane in July 1942 and Manila
Manila
Manila is the capital of the Philippines. It is one of the sixteen cities forming Metro Manila.Manila is located on the eastern shores of Manila Bay and is bordered by Navotas and Caloocan to the north, Quezon City to the northeast, San Juan and Mandaluyong to the east, Makati on the southeast,...

 in May 1945. Australians made up half the strength of Central Bureau, which was expanded to over 4,000 personnel by 1945. The Australian Army and RAAF also provided most of the Allied radio interception capability in the SWPA, and the number of Australian radio interception units was greatly expanded between 1942 and 1945. Central Bureau broke a number of Japanese codes and the intelligence gained from these decryptions and radio direction finding greatly assisted Allied forces in the SWPA.
Australian special forces
Special forces
Special forces, or special operations forces are terms used to describe elite military tactical teams trained to perform high-risk dangerous missions that conventional units cannot perform...

 played a significant role in the Pacific War. Following the outbreak of war commando companies
Australian commandos
The name commando has been applied to a variety of Australian special forces and light infantry units that have been formed since 1941–42. The first Australian "commando" units were formed during the Second World War, where they mainly performed reconnaissance and long-range patrol roles during...

 were deployed to Timor, the Solomon and Bismarck islands and New Caledonia. Although the 1st Independent Company
1st Independent Company (Australia)
The 1st Independent Company was one of twelve independent or commando companies raised by the Australian Army for service in World War II. Raised in 1941, the 1st Independent Company served in New Ireland, New Britain and New Guinea in the early stages of the war in the Pacific, taking part in a...

 was swiftly overwhelmed when the Japanese invaded the Solomon Islands in early 1942, the 2/2nd
2/2nd Commando Squadron (Australia)
The 2/2nd Commando Squadron was one of 12 independent companies or commando squadrons raised by the Australian Army for service during World War II. The 2/2nd served in Timor, New Guinea and New Britain during World War II, taking part in the Battle of Timor in June 1942 as part of Sparrow Force...

 and 2/4th independent companies waged a successful guerrilla campaign on Timor which lasted from February 1942 to February 1943 when the Australian force was evacuated. The commando companies also played an important role in the New Guinea, New Britain, Bougainville and Borneo campaigns where they were used to collect intelligence, spearhead offensives and secure the flanks of operations conducted by conventional infantry.

Australia also formed small-scale raiding and reconnaissance forces, most of which were grouped together as the Allied Intelligence Bureau
Allied Intelligence Bureau
The Allied Intelligence Bureau was an joint United States, Australian, Dutch and British intelligence and special operations agency during World War II. It was responsible for operating parties of spies and commandos behind Japanese lines in order to collect intelligence and conduct guerrilla...

. Z Special Unit
Z Special Unit
Z Special Unit was a joint Allied special forces unit formed during the Second World War to operate behind Japanese lines in South East Asia...

 conducted raids far behind the front line, including a successful raid on Singapore in September 1943
Operation Jaywick
Operation Jaywick was a special operation undertaken in World War II. In September 1943, 14 commandos and sailors from the Z Special Unit raided Japanese shipping in Singapore Harbour, sinking seven ships.- Background :...

. M Special Unit
M Special Unit
M Special Unit, was part of the Services Reconnaissance Department, a joint Australian, New Zealand and British military intelligence reconnaissance unit, which saw action against the Japanese during World War II...

, coastwatchers and smaller AIB units also operated behind Japanese lines to collect intelligence. AIB parties were often used to support Australian Army units and were assigned to inappropriate tasks such as tactical reconnaissance and liaison. AIB missions in Timor and Dutch New Guinea were also hampered by being placed under the command of unpopular Dutch colonial administrators. The RAAF formed a specially-equipped unit (No. 200 Flight
No. 200 Flight RAAF
No. 200 Flight was a Royal Australian Air Force special duties flight of World War II. The flight was formed in February 1945 to support the Allied Intelligence Bureau and saw action over Borneo and the Netherlands East Indies from March that year until the end of the war in August. No...

) in 1945 to support these operations by transporting and supplying AIB parties in areas held by the Japanese.

Operations against the Japanese home islands

Australia played a minor role in the Japan campaign
Japan campaign
The Japan Campaign was a series of battles and engagements in and around the Japanese Home Islands, between Allied forces and the forces of Imperial Japan during the last stages of the Pacific Campaign of World War II. The Japan Campaign lasted from around June 1944 to August 1945.-Air war:Periodic...

 in the last months of the war and was preparing to participate in the invasion of Japan
Operation Downfall
Operation Downfall was the Allied plan for the invasion of Japan near the end of World War II. The operation was cancelled when Japan surrendered after the atomic bombing of Hiroshima and Nagasaki and the Soviet Union's declaration of war against Japan. The operation had two parts: Operation...

 at the time the war ended. Several Australian warships operated with the British Pacific Fleet
British Pacific Fleet
The British Pacific Fleet was a British Commonwealth naval force which saw action against Japan during World War II. The fleet was composed of British Commonwealth naval vessels. The BPF formally came into being on 22 November 1944...

 (BPF) during the Battle of Okinawa
Battle of Okinawa
The Battle of Okinawa, codenamed Operation Iceberg, was fought on the Ryukyu Islands of Okinawa and was the largest amphibious assault in the Pacific War of World War II. The 82-day-long battle lasted from early April until mid-June 1945...

 and Australian destroyers later escorted British aircraft carriers and battleships during attacks on targets in the Japanese home islands
Japanese Archipelago
The , which forms the country of Japan, extends roughly from northeast to southwest along the northeastern coast of the Eurasia mainland, washing upon the northwestern shores of the Pacific Ocean...

. Despite its distance from Japan, Australia was the BPF's main base and a large number of facilities were built to support the fleet.

Australia's participation in the planned invasion of Japan would have involved elements of all three services fighting as part of Commonwealth forces. It was planned to form a new 10th Division from existing AIF personnel which would form part of the Commonwealth Corps
Commonwealth Corps
The Commonwealth Corps was the name given to a proposed British Commonwealth army formation, which was scheduled to take part in the planned Allied invasion of Japan in during 1945 and 1946. The corps was never formed however, as the Japanese surrender obviated any need for it...

 with British, Canadian and New Zealand units. The corps' organisation was to be identical to that of a US Army corps, and it would have participated in the invasion of the Japanese home island of Honshū
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

 which was scheduled for March 1946. Australian ships would have operated with the BPF and US Pacific Fleet and two RAAF heavy bomber squadrons and a transport squadron were scheduled to be redeployed from Britain to Okinawa to join the strategic bombardment of Japan
Air raids on Japan
During World War II the Allied forces conducted many air raids on Japan which caused extensive destruction to the country's cities and killed over 300,000 people. These attacks began with the Doolittle Raid in mid-April 1942, but did not resume until June 1944 when United States Army Air Forces ...

 as part of Tiger Force
Tiger Force (air)
Tiger Force, also known as the Very Long Range Bomber Force, was the name given to a World War II British Commonwealth long-range heavy bomber force, formed in 1945, from squadrons serving with RAF Bomber Command in Europe, for proposed use against targets in Japan...

. Planning for operations against Japan ceased in August 1945 when Japan surrendered
Surrender of Japan
The surrender of Japan in 1945 brought hostilities of World War II to a close. By the end of July 1945, the Imperial Japanese Navy was incapable of conducting operations and an Allied invasion of Japan was imminent...

 following the atomic bombings of Hiroshima and Nagasaki
Atomic bombings of Hiroshima and Nagasaki
During the final stages of World War II in 1945, the United States conducted two atomic bombings against the cities of Hiroshima and Nagasaki in Japan, the first on August 6, 1945, and the second on August 9, 1945. These two events are the only use of nuclear weapons in war to date.For six months...

.

General Blamey signed the Japanese Instrument of Surrender
Japanese Instrument of Surrender
The Japanese Instrument of Surrender was the written agreement that enabled the Surrender of Japan, marking the end of World War II. It was signed by representatives from the Empire of Japan, the United States of America, the Republic of China, the United Kingdom, the Union of Soviet Socialist...

 on behalf of Australia during the ceremony held on board on 2 September 1945. Several RAN warships were among the Allied ships anchored in Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

 during the proceedings. Following the main ceremony on board Missouri, Japanese field commanders surrendered to Allied forces across the Pacific Theatre. Australian forces accepted the surrender of their Japanese opponents at ceremonies conducted at Morotai, several locations in Borneo, Timor, Wewak, Rabaul, Bougainville and Nauru.

Australians in other theatres

In addition to the major deployments, Australian military units and service men and women served in other theatres of the war, typically as part of British-led Commonwealth forces. About 14,000 Australians also served in the Merchant Navy and crewed ships in many areas of the world.
Australia played a minor role in the British-led campaigns against Vichy French colonial possessions in Africa. In late September 1940 Australia took part in the unsuccessful British and Free French attempt to capture Dakar
Battle of Dakar
The Battle of Dakar, also known as Operation Menace, was an unsuccessful attempt in September 1940 by the Allies to capture the strategic port of Dakar in French West Africa , which was under Vichy French control, and to install the Free French under General Charles de Gaulle there.-Background:At...

 in which she sank a Vichy French destroyer. The Australian Government was not informed of the cruiser's involvement in this operation prior to the battle and complained to the British Government. Three Australian destroyers also took part in the invasion of Madagascar
Battle of Madagascar
The Battle of Madagascar was the Allied campaign to capture Vichy-French-controlled Madagascar during World War II. It began on 5 May 1942. Fighting did not cease until 6 November.-Geo-political:...

 in September 1942. Closer to home, played a significant role in ensuring that New Caledonia
New Caledonia
New Caledonia is a special collectivity of France located in the southwest Pacific Ocean, east of Australia and about from Metropolitan France. The archipelago, part of the Melanesia subregion, includes the main island of Grande Terre, the Loyalty Islands, the Belep archipelago, the Isle of...

 came under Free French
Free French Forces
The Free French Forces were French partisans in World War II who decided to continue fighting against the forces of the Axis powers after the surrender of France and subsequent German occupation and, in the case of Vichy France, collaboration with the Germans.-Definition:In many sources, Free...

 control in September 1940 by escorting a pro-Free French Governor to Nouméa
Nouméa
Nouméa is the capital city of the French territory of New Caledonia. It is situated on a peninsula in the south of New Caledonia's main island, Grande Terre, and is home to the majority of the island's European, Polynesian , Indonesian, and Vietnamese populations, as well as many Melanesians,...

 and taking station off the city during the popular protests which resulted in the Governor replacing the pro-Vichy authorities.

Australian warships served in the Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

 and Persian Gulf
Persian Gulf
The Persian Gulf, in Southwest Asia, is an extension of the Indian Ocean located between Iran and the Arabian Peninsula.The Persian Gulf was the focus of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers...

 through much of the war. From June to October 1940 HMAS Hobart took part in the East African Campaign
East African Campaign (World War II)
The East African Campaign was a series of battles fought in East Africa during World War II by the British Empire, the British Commonwealth of Nations and several allies against the forces of Italy from June 1940 to November 1941....

, and played an important role in the successful evacuation
Italian conquest of British Somaliland
The Italian conquest of British Somaliland was a military campaign in the Horn of Africa, which took place in August 1940 between forces of Italy and those of Great Britain and its Commonwealth...

 of Berbera
Berbera
Berbera is a city and seat of Berbera District in Somaliland, a self-proclaimed Independent Republic with de facto control over its own territory, which is recognized by the international community and the Somali Government as a part of Somalia...

. In May 1941, Yarra supported an operation in which Gurkha
Gurkha
Gurkha are people from Nepal who take their name from the Gorkha District. Gurkhas are best known for their history in the Indian Army's Gorkha regiments, the British Army's Brigade of Gurkhas and the Nepalese Army. Gurkha units are closely associated with the kukri, a forward-curving Nepalese knife...

 troops were landed near Basra
Basra
Basra is the capital of Basra Governorate, in southern Iraq near Kuwait and Iran. It had an estimated population of two million as of 2009...

 during the Anglo-Iraqi War
Anglo-Iraqi War
The Anglo-Iraqi War was the name of the British campaign against the rebel government of Rashid Ali in the Kingdom of Iraq during the Second World War. The war lasted from 2 May to 31 May 1941. The campaign resulted in the re-occupation of Iraq by British armed forces and the return to power of the...

. In August 1941 Yarra and Kanimbla took part in the Anglo-Soviet invasion of Iran
Anglo-Soviet invasion of Iran
The Anglo-Soviet invasion of Iran was the Allied invasion of the Imperial State of Iran during World War II, by British, Commonwealth, and Soviet armed forces. The invasion from August 25 to September 17, 1941, was codenamed Operation Countenance...

, with Yarra sinking the Iranian sloop Babr near Kohorramshahr and Kanimbla landing troops at Bandar Shapur. A dozen Bathurst class corvettes
Bathurst class corvette
The Bathurst class corvettes were a class of general purpose vessels produced in Australia during World War II. Originally classified as minesweepers, but widely referred to as corvettes, the Bathurst class vessels fulfilled a broad anti-submarine, anti-mine, and convoy escort role.Sixty Bathurst...

 also escorted Allied shipping in the Persian Gulf during 1942.

While most Australian units in the Pacific Theatre fought in the SWPA, hundreds of Australians were posted to British units in Burma and India. These included 45 men from the 8th Division who volunteered to train Chinese guerrillas with the British Mission 204 in southern China and served there from February to September 1942. Hundreds of Australians also served with RAF units in India and Burma, though no RAAF units were deployed to this theatre. In May 1943, some 330 Australians were serving in forty-one squadrons in India, of which only nine had more than ten Australians. In addition, many of the RAN's corvettes and destroyers served with the British Eastern Fleet where they were normally used to protect convoys in the Indian Ocean
Indian Ocean in World War II
Axis naval forces operated throughout the Indian Ocean during World War II . These activities included unrestricted submarine warfare, airstrikes by aircraft carriers, covert raiding ships, capital ships and raids by land-based heavy bombers...

 from attacks by Japanese and German submarines.

Prisoners of war

Just under 29,000 Australians were taken prisoner
Prisoner of war
A prisoner of war or enemy prisoner of war is a person, whether civilian or combatant, who is held in custody by an enemy power during or immediately after an armed conflict...

 by the Axis during the war. Only 14,000 of the 21,467 Australian prisoners taken by the Japanese survived captivity. The majority of the deaths in captivity were due to malnutrition and disease.

The 8,000 Australians captured by Germany and Italy were generally treated in accordance with the Geneva Conventions
Geneva Conventions
The Geneva Conventions comprise four treaties, and three additional protocols, that establish the standards of international law for the humanitarian treatment of the victims of war...

. The majority of these men were taken during the fighting in Greece and Crete in 1941, with the next largest group being 1,400 airmen shot down over Europe. Like other western Allied POWs, the Australians were held in permanent camps in Italy and Germany. As the war neared its end the Germans moved many prisoners towards the interior of the country to prevent them from being liberated by the advancing Allied armies. These movements were often made through forced marches in harsh weather and resulted in many deaths. Four Australians were also executed following a mass escape from Stalag Luft III
Stalag Luft III
Stalag Luft III was a Luftwaffe-run prisoner-of-war camp during World War II that housed captured air force servicemen. It was in the German Province of Lower Silesia near the town of Sagan , southeast of Berlin...

 in March 1944. While the Australian prisoners suffered a higher death rate in German and Italian captivity than their counterparts in World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, it was much lower than the rate suffered under Japanese internment.
Like the other Allied personnel captured by the Japanese, most of the thousands of Australians captured in the first months of 1942 during the conquest of Malaya and Singapore, the NEI and New Guinea were held in harsh conditions
Japanese war crimes
Japanese war crimes occurred during the period of Japanese imperialism, primarily during the Second Sino-Japanese War and World War II. Some of the incidents have also been described as an Asian Holocaust and Japanese war atrocities...

. Australians were held in camps across the Asia-Pacific region and many endured long voyages in grossly overcrowded ships
Hell Ship
A hell ship is a ship with extremely unpleasant living conditions or with a reputation for cruelty among the crew. It now generally refers to the ships used by the Imperial Japanese Navy to transport Allied prisoners of war out of the Philippines, Hong Kong and Singapore during World War II. The...

. While most of the Australian POWs who died in Japanese captivity were the victim of deliberate malnutrition
Malnutrition
Malnutrition is the condition that results from taking an unbalanced diet in which certain nutrients are lacking, in excess , or in the wrong proportions....

 and disease, hundreds were deliberately killed by their guards. The Burma-Thai Railway was the most notorious of the prisoner of war experiences, as 13,000 Australians worked on it at various times during 1942 and 1943 alongside thousands of other Allied POWs and Asians conscripted by the Japanese; nearly 2,650 Australians died there. Thousands of Australian POWs were also sent to the Japanese home islands where they worked in factories and mines
Aso Mining forced labor controversy
The Aso Mining forced labor controversy concerns the use of Allied prisoners of war and Korean conscripts as laborers for the Aso Mining Company in Japan during World War II...

 in generally harsh conditions. The POWs held in camps at Ambon and Borneo suffered the highest death rates; 77 percent of those at Ambon died and few of the 2,500 Australian and British prisoners in Borneo survived; almost all were killed by overwork and a series of death marches
Sandakan Death Marches
The Sandakan Death Marches were a series of forced marches in Borneo from Sandakan to Ranau which resulted in the deaths of more than 3,600 Indonesian civilian slave labourers and 2,400 Allied prisoners of war held captive by the Empire of Japan during the Pacific campaign of World War II at prison...

 in 1945.

The treatment of the POWs prompted many Australians to remain hostile towards Japan after the war. Australian authorities investigated the abuses against Allied POWs in their country's zone of responsibility after the war, and guards who were believed to have mistreated prisoners were among those tried by Australian-administered war crimes trials
War crimes trials
War crimes trials are trials of persons charged with criminal violation of the laws and customs of war and related principles of international law. The practice began after World War I, when some German leaders were tried by a German court in the Leipzig War Crimes Trial for crimes committed during...

.

Thousands of Axis POWs were held in Australia during the war. A total of 25,720 POWs were held in Australia: 18,432 Italians, 5,637 Japanese and 1,651 Germans. These prisoners were housed in purpose-built camps and were treated in accordance with the Geneva Convention. A total of 16,798 civilians were also interned. These included 8,921 Australian-resident 'enemy alien
Enemy alien
In law, an enemy alien is a citizen of a country which is in a state of conflict with the land in which he or she is located. Usually, but not always, the countries are in a state of declared war.-United Kingdom:...

s', while the remainder were civilians sent to Australia for internment by other Allied countries. On the morning of 5 August 1944, approximately half of the 1,104 Japanese held at a camp near Cowra, New South Wales
Cowra, New South Wales
Cowra is a town in the Central West region of New South Wales, Australia in the Cowra Shire. It is located on the Mid-Western Highway, 317 kilometres west of Sydney on the banks of the Lachlan River at an altitude of 310 metres above sea level. At the 2006 census Cowra had a population of 8,430...

 attempted to escape
Cowra breakout
During World War II, a prisoner of war camp near the town of Cowra in New South Wales, Australia was the site of one of the largest prison escapes of the war, on 5 August 1944. At least 545 Japanese POWs were involved in the breakout.-The camp:...

. The prisoners overwhelmed their guards and over 400 broke through the wire fences; however, every escapee was either recaptured or killed within 10 days.

Home front

During the war the Australian Government greatly expanded its powers in order to better direct the war effort, and Australia's industrial and human resources were focused on supporting the Allied armed forces. The expansion of the government's powers began on 9 September 1939 when the National Security Act became law. This act enabled the government to introduce industrial conscription, and both men and women were ordered into essential industries. Rationing
Rationing
Rationing is the controlled distribution of scarce resources, goods, or services. Rationing controls the size of the ration, one's allotted portion of the resources being distributed on a particular day or at a particular time.- In economics :...

 was first introduced in 1940 and was greatly expanded during 1942. The Government also strongly encouraged austerity
Austerity
In economics, austerity is a policy of deficit-cutting, lower spending, and a reduction in the amount of benefits and public services provided. Austerity policies are often used by governments to reduce their deficit spending while sometimes coupled with increases in taxes to pay back creditors to...

 and war bond
War bond
War bonds are debt securities issued by a government for the purpose of financing military operations during times of war. War bonds generate capital for the government and make civilians feel involved in their national militaries...

s as a means of reducing demand for scarce resources.

Government policies to develop war-related industries were successful in increasing the sophistication of Australia's industrial sector and self sufficiency in most categories of weapons. In the decades leading up to the war successive Australian governments had provided subsidies, tariffs and other incentives encourage the development of military-related manufacturing sectors such as the production of aircraft, automobiles, electronics and chemicals. These secondary industries were integrated into a war economy
War economy
War economy is the term used to describe the contingencies undertaken by the modern state to mobilise its economy for war production. Philippe Le Billon describes a war economy as a "system of producing, mobilising and allocating resources to sustain the violence".Many states increase the degree of...

 during 1940 and 1941 and were able to meet most of the Army's needs by 1942. Government-led efforts to develop and manufacture advanced technology enjoyed some notable successes, including the development of lightweight radar
Radar
Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...

 sets, optical devices for artillery and equipment adapted for use in the tropics
Tropics
The tropics is a region of the Earth surrounding the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately  N and the Tropic of Capricorn in the southern hemisphere at  S; these latitudes correspond to the axial tilt of the Earth...

. Australian industry also developed new weapons which were mass-produced for the military, including the Owen submachine gun and a shortened version
Ordnance QF 25-pounder Short
The Ordnance QF 25-pounder Short was an Australian variant of the British Ordnance QF 25-pounder field gun/howitzer. The gun was developed by modifying the 25-pounder's design to improve its mobility during jungle warfare. Development began in 1942, and the weapon first entered service with the...

 of the Ordnance QF 25 pounder
Ordnance QF 25 pounder
The Ordnance QF 25 pounder, or more simply, 25-pounder or 25-pdr, was introduced into service just before World War II, during which it served as the major British field gun/howitzer. It was considered by many to be the best field artillery piece of the war, combining high rates of fire with a...

. In addition, Australian scientists and pharmaceutical companies made important advances in the treatment of tropical disease
Tropical disease
Tropical diseases are diseases that are prevalent in or unique to tropical and subtropical regions. The diseases are less prevalent in temperate climates, due in part to the occurrence of a cold season, which controls the insect population by forcing hibernation. Insects such as mosquitoes and...

s. Not all development projects were successful though: efforts to develop an Australian tank (the Sentinel
Sentinel tank
The Sentinel tank was a cruiser tank designed in Australia in World War II in response to the war in Europe, and to the threat of Japan expanding the war to the Pacific or even a feared Japanese invasion of Australia. It was the first tank to be built with a hull cast as a single piece, and the...

) did not cease until after it had been rendered obsolete and unnecessary, and the development of Australian-designed advanced bomber and fighter aircraft (the CAC Woomera
CAC Woomera
|-See also:-References:NotesBibliography* Ewer, Peter. Wounded Eagle: the bombing of Darwin and Australi's air defence scandal. Sydney: New Holland, 2009. ISBN 9781741108255...

 and CAC CA-15
CAC CA-15
-See also:-References:NotesBibliography* Crick, Darren. adf-serials.com, 2003.* Donald, David. "Commonwealth CA-15: The 'Kangaroo' Fighter". Wings of Fame, Volume 4, 1996, pp. 118–121. London: Aerospace Publishing. ISBN 1-874023-71-9. ISSN 1361-2034.* Francillon, René J. The Royal Australian Air...

 respectively) were abandoned as the engines these aircraft required were not available and adequate US and British designs were produced under licence instead.
The massive expansion of the military led to a critical shortage of male workers and increased female participation in the labour force. The number of Australian women in paid employment increased from 644,000 in 1939 to 855,000 in 1944. While this was only a 5 percentage point increase in the proportion of all Australian women who were working, large numbers of women moved from traditionally 'female' roles such as domestic servants into 'male' roles in industry. Female branches of the armed forces
Women in the Australian military
Women have served in Australian armed forces since 1899. Until World War II women were restricted to the Australian Army Nursing Service. This role expanded in 1941–42 when the Royal Australian Navy , Australian Army and Royal Australian Air Force established female branches in which women...

 were established in 1941, and by 1944 almost 50,000 women were serving in the Women's Royal Australian Naval Service
Women's Royal Australian Naval Service
The Service was established in April 1941 when the Royal Australian Navy enrolled 14 women at HMAS Harman, the wireless telegraphy station near Canberra. Two women were stewards, and 12 trained as telegraphists...

, Australian Women's Army Service
Australian Women's Army Service
The Australian Women's Army Service or "AWAS" was a women's service established on 13 August 1941 to "release men from certain military duties for employment in fighting units".-Formation / Structure:...

 and Women's Auxiliary Australian Air Force
Women's Auxiliary Australian Air Force
The Women's Auxiliary Australian Air Force was formed in March 1941 after considerable lobbying by women keen to serve and by the Chief of the Air Staff who wanted to release male personnel serving in Australia for service overseas. The WAAAF was the first and largest of the World War II...

. Thousands more served with the civilian Australian Women's Land Army
Australian Women's Land Army
The Australian Women's Land Army was an organisation created in World War II in Australia to combat rising labour shortages in the farming sector. The AWLA was formed on 27 July 1942 and was modelled on Women's Land Army in Great Britain. When Japan joined the Axis in 1941 male agricultural labour...

 or undertook voluntary war work. Manpower shortages became an increasingly significant economic issue towards the end of the war, and the Australian military was reduced in size from 1944 to free up personnel for war industries and the civilian economy.

Industrial conscription and the drive to increase productivity led to an increasing degree of industrial unrest
Industrial unrest
Industrial unrest is the term used to describe activities undertaken by the workforce when they protest against pay or conditions of their employment....

 over time. Many workers were required to work long hours in poor conditions and were not able to change their employment due to the manpower laws. Poor work conditions were exacerbated by the Government's austerity measures reducing workers' standards of living. As a result, strikes
Strike action
Strike action, also called labour strike, on strike, greve , or simply strike, is a work stoppage caused by the mass refusal of employees to work. A strike usually takes place in response to employee grievances. Strikes became important during the industrial revolution, when mass labour became...

 and other forms of protest disrupted Australian production, especially from 1943 onwards. These protests attracted considerable criticism from other civilians and members of the military. In May 1943 the Government introduced policies which enabled workers who were undertaking unlawful industrial action to be conscripted into the military, but this had little impact due to the shortage of skilled labour in the industries most prone to industrial disputes.

World War II marked the beginning of a long period of Australian economic growth
Economic growth
In economics, economic growth is defined as the increasing capacity of the economy to satisfy the wants of goods and services of the members of society. Economic growth is enabled by increases in productivity, which lowers the inputs for a given amount of output. Lowered costs increase demand...

. The war greatly increased the size and importance of the Australian manufacturing sector and stimulated the development of more technologically advanced industries. As part of this trend many workers acquired relatively high skill levels and female labour force participation rates greatly increased. Many women were forced out of traditionally male-dominated industries after the war, however.

After the war

World War II cost thousands of Australian lives
Australian casualties of World War II
Over 27,000 Australians were killed and 23,000 wounded in action during World War II. In addition, hundreds more servicemen and women were killed and injured in accidents during the war.-Casualties by service:...

 and consumed a large portion of the national income. During the war, 27,073 members of the Australian military were either killed, died of wounds or died while prisoners of war. Of these, 9,572 were killed in the war against Germany and Italy and 17,501 in the war against Japan. Prisoners of war held by the Japanese made up nearly half of Australia's deaths in the Pacific. At least 386 Australian civilian seamen were killed during the war. Total Australian war expenditure was £
Australian pound
The pound was the currency of Australia from 1910 until 13 February 1966, when it was replaced by the Australian dollar. It was subdivided into 20 shillings, each of 12 pence.- Earlier Australian currencies :...

2,949,380,000 and at its peak in 1942–43, military costs accounted for 40.1 percent of national income.

In the months after the war, Australian authorities were responsible for administering all of Borneo and the NEI east of Lombok
Lombok
Lombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east...

 until the British and Dutch colonial governments were re-established. While British and Indian forces in the west of the NEI became caught up in the Indonesian National Revolution
Indonesian National Revolution
The Indonesian National Revolution or Indonesian War of Independence was an armed conflict and diplomatic struggle between Indonesia and the Dutch Empire, and an internal social revolution...

, the Australians were able to avoid clashes with local nationalists. Australian forces were also responsible for guarding the 344,000 remaining Japanese in the NEI and Australian territories and administering war crimes trials in these areas. A volunteer force was formed as Australia's contribution to the British Commonwealth Occupation Force
British Commonwealth Occupation Force
The British Commonwealth Occupation Force , was the name of the joint Australian, Canadian, British, Indian and New Zealand military forces in occupied Japan, from 21 February 1946 until the end of occupation in 1952...

 (BCOF) in Japan, and Australia provided the BCOF's headquarters and a high proportion of its personnel. This force later formed the nucleus of the post-war Australian Army, which included permanent combat units for the first time.

The Australian military was rapidly demobilised
Demobilisation of the Australian military after World War II
The demobilisation of the Australian military after World War II involved discharging almost 600,000 men and women from the military, supporting their transition to civilian life and reducing the three armed services to peacetime strengths...

 after the Japanese surrender. At the end of the war the military had a strength of nearly 600,000 personnel, of whom 224,000 were serving in the Pacific and 20,000 in Britain and other places. Demobilisation planning had begun at the end of 1942 with the final scheme being approved by the Government in March 1945. General demobilisation started on 1 October 1945 and was completed in February 1947. The process generally ran smoothly, though there were protests over delays at Morotai and Bougainville. Personnel were provided with training while they waited to be demobilised and the government provided post-demobilisation assistance with employment, loans, education and other benefits. Service women were given similar assistance to their male counterparts, but were placed under pressure to return to 'traditional' family roles.

World War II led to significant changes to Australian society. Economically, the war accelerated the development of Australia's manufacturing industry and led to a large fall in unemployment. The impact of World War II changed Australian society, and contributed to the development of a more cosmopolitan society in which women were able to play a larger role. The war also resulted in a greater maturity in Australia's approach to international affairs, as demonstrated by the development of a more independent foreign policy and the encouragement of mass immigration after the war.

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