Fire support base coral
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The Battle of Coral–Balmoral (12 May – 6 June 1968) was a series of actions fought during the Vietnam War
between the 1st Australian Task Force
(1 ATF) and the North Vietnamese 7th Division and Viet Cong, 40 kilometres (24.9 mi) north-east of Saigon. Following the defeat of the communist Tet offensive in January and February, in late April two Australian infantry battalion
s—the 1st
and 3rd Battalions, Royal Australian Regiment
(3 RAR)—with supporting arms, were again deployed from their base at Nui Dat
in Phuoc Tuy province
to positions astride infiltration routes leading to Saigon, in order to interdict renewed movement against the capital. Part of the wider allied Operation Toan Thang I
, it was launched in response to intelligence reports of another impending communist offensive; however, the Australians experienced little fighting during this period. Meanwhile, the Viet Cong successfully penetrated the capital on 5 May, plunging Saigon into chaos during the May Offensive
in an attempt to influence the upcoming Paris peace talks
scheduled to begin on the 13th. During three days of intense fighting the attacks were repelled by US and South Vietnamese forces, and although another attack was launched by the Viet Cong several days later, the offensive was again defeated with heavy losses on both sides, causing significant damage to Saigon as well as numerous civilian casualties. The North Vietnamese and Viet Cong were forced out of the city.
1 ATF was redeployed on 12 May to obstruct the withdrawal of forces from the capital, with two the battalions establishing a fire support base
(FSB), named FSB Coral, just east of Lai Khe
, Binh Duong Province
in an area of operations known as AO Surfers. However, poor reconnaissance and inadequate operational planning led to delays and confusion during the fly-in, and the Australians had only partially completed FSB Coral by the evening. The North Vietnamese subsequently mounted a number of battalion-sized assaults against it on the night of 12/13 May, with a heavy bombardment from 03:30 signalling the start of the assault. Exploiting the disorganised defence to penetrate the Australian perimeter, 141 NVA Regiment temporarily captured a forward gun position during close-quarters fighting before finally being repulsed by superior firepower the following morning. Casualties were heavy on both sides and although the Australians had won a convincing victory, they had come close to suffering both a political and military defeat at the hands of the North Vietnamese. The following day 1 RAR was deployed to defend FSB Coral, while 3 RAR established FSB Coogee to the west to ambush staging areas and infiltration routes. Coral was again assaulted in the early hours of 16 May, coming under a heavy barrage followed by another regiment
al-sized attack. Again the base was penetrated but after a six-hour battle the North Vietnamese were forced to withdraw after suffering heavy losses. Expecting further fighting, the Australians were subsequently reinforced with Centurion tank
s and additional artillery
. On 22 May, FSB Coral was again attacked overnight, coming under a short but accurate mortar
bombardment which was subsequently broken up by Australian artillery and mortars.
The Australians then moved against the communist base areas east of Route 16, with 3 RAR redeploying to establish FSB Balmoral on 24 May, 4.5 kilometres (2.8 mi) to the north. Now supported by tanks which had arrived from Coral just hours before, the Australian infantry
at Balmoral were then subjected to a two battalion attack by 165 NVA Regiment. Following a very accurate rocket and mortar barrage at 03:45 on 26 May, the attack fell primarily on D Company before being repelled with heavy casualties by the combined firepower of the Australian tanks and infantry. The next day the Australians at Coral assaulted a number of bunker
s that had been located just outside the base, with a troop
of Centurions supported by infantry destroying the bunkers and their occupants without loss. A second major North Vietnamese attack, again of regimental strength, was made against Balmoral at 02:30 on 28 May but was called off after only 30 minutes after being soundly defeated by the supporting fire of the Australian tanks, artillery and mortars. Regardless, the battle continued into June as the Australians patrolled their area of operations. However, with contacts decreasing, 1 ATF returned to Nui Dat on 6 June, being relieved by US and South Vietnamese forces. The battle was the first time the Australians had clashed with regular North Vietnamese Army and Viet Cong main force units operating in battalion and regimental strength in conventional warfare
. During 26 days of fighting the communists suffered punishing losses and were forced to postpone a further attack on Saigon, while the Australians also suffered significant casualties. The largest unit-level action of the war for the Australians, today the battle is considered one of the most famous actions fought by the Australian Army
during the Vietnam War.
in Phuoc Tuy province, the 1st Australian Task Force
was part of US II Field Force, Vietnam
(IIFFV), under the overall command of Lieutenant General
Frederick Weyand. By early 1968, 1 ATF had been reinforced and was at full strength with three infantry battalions supported by armour, artillery, aviation and engineers, while logistic arrangements were provided by the 1st Australian Logistic Support Group
(1 ALSG) based at the port of Vung Tau
. Commanded by Brigadier Ron Hughes
, 1 ATF had continued to operate independently within Phuoc Tuy, and while the war had become a series of large-scale search-and-destroy operations in a war of attrition
for the Americans, the Australians had largely pursued their own counter-insurgency
campaign despite the differences between Australian and American methods at times producing friction between the allies. Regardless, 1 ATF was also available for deployment elsewhere in the III Corps Tactical Zone
and with the province coming progressively under control throughout 1967, the Australians would increasingly spend a significant period of time conducting operations further afield.
The Tet offensive began on 31 January 1968, with 85,000 to 100,000 North Vietnamese and Viet Cong troops simultaneously assaulting population centres and allied installations across South Vietnam in an attempt to incite a general uprising against the South Vietnamese government and its American supporters. In response, 1 ATF was deployed along likely infiltration routes in order to defend the vital Bien Hoa
-Long Binh
complex near Saigon between January and March, as part of Operation Coburg
. Heavy fighting resulted in 17 Australians killed and 61 wounded, while communist casualties included at least 145 killed, 110 wounded and five captured, with many more removed from the battlefield. Meanwhile, the remaining Australian forces in Phuoc Tuy were stretched thin, with elements of 3 RAR successfully repelling an assault on Ba Ria
and later spoiling a harassing attack on Long Dien
and conducting a sweep of Hoa Long, killing 50 Viet Cong and wounding 25 for the loss of five killed and 24 wounded.
At the strategic level the general uprising never eventuated, and in late-February the communist offensive collapsed after suffering more than 45,000 killed, against South Vietnamese and allied losses of 6,000 men. Regardless, it proved to be a turning point in the war and although it had been a tactical disaster for the North Vietnamese and Viet Cong, Hanoi emerged with a significant political victory as confidence in the American military and political leadership collapsed, as did public support for the war in the United States. Prior to Tet, American commanders and politicians had talked confidently about winning the war, arguing that General
William Westmoreland
's strategy of attrition had reached the point where the communists were losing soldiers and equipment faster than they could be replaced. Yet the scale of the offensive, and the surprise and violence with which it had been launched, had shocked the American public and contradicted such predictions of imminent victory; in its wake President Lyndon Johnson announced that he would no longer seek a second term in office. Tet had a similar effect on Australian public opinion, and caused growing uncertainty in the government about the determination of the United States to remain militarily involved in Southeast Asia. Amid the initial shock, Prime Minister John Gorton
unexpectedly declared that Australia would not increase its military commitment in Vietnam beyond the current level of 8,000 personnel.
On the ground, the war continued without respite and Hughes—the 1 ATF commander—turned his attention to D445 Provincial Mobile Battalion
, deciding to strike at its base areas in the Minh Dam Secret Zone located in the Long Hai hills
south of Long Dien and Dat Do, 14 kilometres (8.7 mi) from Nui Dat. 5 RAR had suffered heavy casualties in February 1967 while operating in the Long Hais, which were heavily defended by mines and booby traps; despite previous operations by the US 173rd Airborne Brigade
in June 1966 and two smaller South Vietnamese operations, the area had remained a Viet Cong safe haven. However, this time the Australians would use two battalions supported by tanks and air strikes in an attempt to reduce the base area. Operation Pinnaroo began on 27 February, with 2 RAR
and 3 RAR cordoning off the complex with the rifle companies patrolling and ambushing at night in order to prevent the Viet Cong from escaping. On 8 March the Australians conducted a wide encircling movement to tighten the cordon, while a sustained bombardment by US B-52 heavy bombers and artillery targeted the hill the next day. A combined force of infantry from 3 RAR supported by armour then advanced on the foothills, before clearing the minefields and destroying an extensive base area which included a deep cave system that had first been used by the Viet Minh
against the French in the 1950s. Each Australian rifle company then methodically searched its area of operations, while engineers destroyed the underground facilities; a task which required the use of tonnes of explosives.
The operation lasted until 15 April, with mines—including many M16s
that had been lifted by the Viet Cong from the controversial barrier minefield laid by the Australians at Dat Do—once again claiming a significant toll. Ten Australians were killed and another 36 were wounded, while known Viet Cong casualties included 21 killed, 14 wounded and 40 captured. Fifty-seven camps and bunker
systems were also destroyed, as were large quantities of weapons, munitions and supplies. Judged a success by the Australians despite their heavy losses, the operation had resulted in significant disruption to the Viet Cong and hindered their operations for some time. Regardless, with 1 ATF lacking the manpower to hold the area, the failure of South Vietnamese forces to permanently occupy the Long Hais meant that any gains were only fleeting, and the D445 Battalion headquarters soon returned to the area after ejecting a South Vietnamese regional force
company a few months later. Meanwhile, 7 RAR
had completed its last operation in March and was relieved by 1 RAR
on 9 April, returning to Australia having finished its 12-month tour.
Vo Nguyen Giap
—had moved quickly to replace these losses with reinforcements, and by early May 15,000 North Vietnamese soldiers were serving in Viet Cong units in South Vietnam. On 8 April, Westmoreland launched a series of large-scale sweeps involving over 70,000 South Vietnamese, American, Australian, New Zealand and Thai troops, code-named Operation Toan Thang I
. Meanwhile, on 5 May the Viet Cong launched attacks against 119 provincial and district capitals, military installations and major cities during the May Offensive
in an attempt to gain an advantage at the first session of peace negotiations
scheduled to begin in Paris on the 13th. Saigon was successfully infiltrated in an event that received widespread international media coverage and resulted in considerable embarrassment for the Americans and their allies, with as many as five of the 13 attacking Viet Cong battalions penetrating the city's outer defences, plunging the capital into chaos and resulting in heavy civilian casualties. After three days of intense fighting American and South Vietnamese forces successfully repelled the assault while, as the peace talks neared, a fresh wave of attacks was launched on Saigon several days later. However by 12 May the fighting was over, and the communists were forced to withdraw having suffered more than 5,500 dead in just over one week of fighting. US casualties were also heavy, amounting to 652 killed and 2,225 wounded, which made it the most costly week of the war for the Americans.
The Australians were initially employed on operations inside Phuoc Tuy province during Operation Toan Thang I. Viet Cong activity in their traditional base areas in the Hat Dich
north of Nui Thi Vai hills, had been increasing in February and March and 3 RAR subsequently commenced operations along the north-western border of Phuoc Tuy province on 21 April. These operations resulted in little contact. In light of this, the Commander Australian Forces Vietnam—Major General
Arthur MacDonald
—believed that the task force would be better employed against North Vietnamese conventional forces, rather than in local pacification operations; later, following a request from Weyand, 1 ATF would again redeploy outside the province. As such, in an operation similar to those three months earlier at Bien Hoa, it was planned that 1 ATF would be used to help block infiltration towards Saigon. Overall responsibility for the defence of the capital was assigned to US IIFFV, and included the US 1st, 9th and 25th Divisions, as well as US 199th Light Infantry Brigade, 1 ATF, and a number of South Vietnamese units. The main deployment began on 25 April in response to intelligence reports of another impending offensive, with 1 ATF headquarters established at the American base at Bearcat
, while 2 RAR and 3 RAR deployed to the Bien Hoa
-Long Khanh
border to block likely infiltration routes east of the large American base complex at Long Binh
, which included the airbase at Bien Hoa and the large Long Binh Logistics Depot. Meanwhile, the task force base at Nui Dat was defended by one infantry battalion, a squadron of tanks and the remainder of the cavalry. The SAS squadron also remained in Phuoc Tuy during this period, continuing reconnaissance and surveillance operations in the province.
2 RAR was tasked with patrolling and ambushing tracks and likely rocket-launching sites to disrupt the expected attack against Saigon. The battalion established FSB Hunt, and conducted a number of small but successful ambushes. Meanwhile 3 RAR established FSB Evans and conducted search-and-ambush operations before returning to Nui Dat on 3 May after being replaced by 1 RAR, which then joined 2 RAR for a sweep. In response to the attacks on Saigon, elements of 1 ATF redeployed on 5 May, relieving the US 199th Light Infantry Brigade in an area of operations (AO) known as AO Columbus so that it could be released for operations elsewhere, with companies from both battalions deploying to ambush suspected infiltration routes in the expectation of an attack by 274 VC Regiment
from the Viet Cong 5th Division
. Five days later 2 RAR was relieved by 3 RAR, having completed its last major operation before returning to Australia. The Australians waited for the Viet Cong to make their move, but they again proved elusive and contact was only light, and by 10 May just six had been killed and one wounded after 21 days of operations. Having missed the Viet Cong and North Vietnamese units as they infiltrated the capital, it was planned that the Australians would be again redeployed on 12 May in order to obstruct the withdrawal of these forces following their defeat in Saigon. The task force would subsequently concentrate astride Route 16 on one of the major north-south supply routes 40 kilometres (24.9 mi) north-east of Saigon, just east of Lai Khe
in Binh Duong province, in a new area of operations, AO Surfers. Meanwhile, US forces would operate on the flanks.
1 ATF would move with its headquarters and two infantry battalions—1 RAR and 3 RAR—as well as cavalry, artillery, engineer and aviation elements operating in support, including M113 armoured personnel carriers from A Squadron, 3rd Cavalry Regiment, 105 mm M2A2 howitzers from 12th Field Regiment, Royal Australian Artillery, Bell H-13 Sioux light observation helicopters from 161 Reconnaissance Flight
and mortar locating radars from 131st Divisional Locating Battery
. The concept of operations
called for the establishment battalion AOs, named Bondi, Manly and Newport. 1 RAR was allocated to AO Bondi with artillery support from 102 Field Battery established at a fire support base, named FSB Coral. 3 RAR was initially allocated to AO Manly, west of Bondi, and would also be supported from FSB Coral by its own supporting battery, 161 Battery, Royal New Zealand Artillery
. The operation would be conducted in three phases. 3 RAR—under the command of Lieutenant Colonel Jim Shelton—would conduct an air assault into Coral early on 12 May, with the lead elements securing the landing zone for the fly-in of the remainder of the battalion, and 1 RAR under Lieutenant Colonel Phillip Bennett
. Leaving its supporting artillery and one infantry company for protection, 3 RAR would then move west to establish blocking positions and patrol AO Manly in order to intercept North Vietnamese and Viet Cong forces attempting to withdraw from the south and south-west. Meanwhile, 1 RAR would establish its supporting artillery and mortars at FSB Coral, and then with one company, clear Route 16 to the village of Tan Uyen
, 7 kilometres (4.3 mi) to the south. The battalion would then occupy blocking positions and patrol AO Bondi. 1 ATF headquarters would then move from Bearcat to FSB Coral on 13 May, while the forward task force maintenance area would move from Bearcat by road convoy and be operational by 14 May.
A number of People's Army of Vietnam
(PAVN) units had been identified in AO Surfers, including the regular North Vietnamese 7th Division—consisting of 141 and 165 NVA Regiments under the command of Nguyen the Bon, the Vietcong 5th Division—consisting of 274 and 275 VC Regiments, and the Dong Nai Regiment. These divisions were believed to have participated in the assault on Saigon and allied intelligence considered it likely they would attempt to withdraw through the Australian area of operations in order to regroup. Other forces included 85 NVA Regiment as well as 165, 233, 269, 275, D280 and 745 VC Infiltration Groups and various Viet Cong units used for reconnaissance, guiding, logistics, liaison and other tasks. In total, an estimated strength of 3,000 to 4,000 men. Regardless, despite earlier warnings that they may concentrate up to regiment
al-strength, a breakdown in the passage of intelligence led the Australians to believe that the North Vietnamese and Viet Cong would remain dispersed in small groups in an attempt to avoid detection. As such the Australians assumed that the communist forces would pose little threat and envisioned patrolling from company harbours to find and ambush them as they withdrew. Meanwhile, due to the risk of heavy ground fire, only a very limited aerial reconnaissance of the new area of operations was undertaken and this later had significant implications.
1 ATF was not well practised in flying in and setting up a large fire support base, and a poorly co-ordinated, prolonged and dislocated operation caused considerable delay in getting on the ground, and the scattering of a number of units. Confusion continued to affect the operation, with 161 Battery, RNZA arriving by CH-47 Chinook
before FSB Coral was ready, and being forced to land in an improvised LZ in a clearing 1000 metres (1,093.6 yd) to the south-west. Meanwhile, the continued presence of American forces in AO Manly also prevented 3 RAR from deploying as planned, and as the battalion began landing it was forced to remain on the western side of the FSB. 102 Field Battery, the direct support battery for 1 RAR, was subsequently landed at FSB Coral and Major Brian Murtagh, second-in-command of 12th Field Regiment and the artillery tactical headquarters, was subsequently designated as the FSB commander, even though his guns were now physically dislocated from each other.
These delays in turn affected the fly-in of 1 RAR, with the companies forced to wait at the departure point in AO Colombus before they commenced the air move to FSB Coral. Hughes visited Bennett at FSB Coral at 15:30 to discuss aspects of the defence, as well as events planned for the following day. The deployment of the second battalion was not complete until 16:10, with the 1 RAR Mortar Platoon arriving on the last flight, more than four hours late. It became clear to Bennett that 1 RAR would need to deploy to the east of the FSB, and with just two hours before last light the companies were moved into hasty defensive positions, the last of which were not established until 17:00. Due to the hurried deployment, by dusk the two battalions of 1 ATF and their supporting elements were scattered around FSB Coral in four roughly connected groups, rather than in a co-ordinated defensive area. The task force headquarters advance party and part of its Defence Platoon were located centrally, yet the task force tactical headquarters and the artillery tactical headquarters under Lieutenant Colonel Jack Kelly—Commanding Officer of 12th Field Regiment—both remained in Bearcat. Hughes was not present either, having left Bearcat to attend to matters at the task force rear headquarters at Nui Dat, and was due to move forward with the tactical headquarters to FSB Coral the following day.
There had been little opportunity for co-ordination, with the Australian infantry strung out along the routes away from FSB Coral in preparation for their move the next day. 3 RAR was responsible for the security of FSB Coral, with D Company defending the north-west approaches, while the remaining three companies were dispersed over 3 kilometres (1.9 mi) to the west, spread between the FSB and the New Zealand gun positions to the south-west. 1 RAR occupied the eastern approaches, with its rifle companies dispersed over 5 kilometres (3.1 mi) harbouring in night ambush positions, while C Company was isolated to the south-east picketing the road to Tan Uyen in order to provide security for the convoy due to arrive from Bearcat the following day. Bennett kept his anti-tank and assault pioneer platoons inside the FSB to protect the battalion command post, while the mortar platoon would be particularly exposed, being located adjacent to the 102 Field Battery gun position in an open area on the outer edge of the base facing to the north and east. The rifle companies to the north-east provided the only protection, yet there were large gaps between these positions and they could be easily bypassed. Although the Australians made further efforts to co-ordinate their defences prior to last light, attempting to tie in their positions to achieve mutual support between the sub-units, these arrangements remained incomplete as night fell.
Command posts were dug in and weapons pits and shell scrape
s were commenced, however many were not completed to any depth due to a lack of time, while a heavy rainfall started at 18:00 and soon filled the pits with water anyway. No claymore mines or barbed wire were laid out either, as the wire had not yet arrived, while lack of materials also prevented the construction of overhead protection. 7.62 mm M60 machine-guns
were placed out around the perimeter, however there was no time to test fire them or to properly tie in their arcs of fire. Meanwhile, 90 mm M67 recoilless rifle
s (RCLs) from the 1 RAR Anti-Tank Platoon armed with High Explosive Anti-tank (HEAT) and anti-personnel flechette
ammunition were sited to support the forward machine-guns. Due to their previous experiences fighting the Viet Cong in Phuoc Tuy province, the Australians were not overly alarmed despite the defences at FSB Coral suffering due to the hasty deployment and, although the recent fighting involving the US 1st Division only 3 kilometres (1.9 mi) to the west may have been additional cause for concern, its extent was unknown to the Australians at the time.Later it became known that forces identified during this fighting included part of 141 NVA Regiment and resulted in North Vietnamese casualties of 36 killed and three captured. See . Expecting the North Vietnamese to be operating in small groups while trying to avoid battle as they had done during the last three weeks, there was little thought of a major threat to the FSB. Commencing night routine, sentries were posted while the rest of the Australians stood down to get some sleep.
on the Cambodian border just 48 hours earlier. The North Vietnamese divisional commander had quickly dispatched reconnaissance elements to observe the fly-in of the Australians and their defensive preparations during the afternoon, and they soon reported the opportunity to attack the exposed gun positions of 102 Field Battery. One battalion of 141 NVA Regiment, augmented by 275 and 269 Infiltration Groups, was subsequently tasked to attack FSB Coral that night. This reconnaissance had not gone unnoticed by the Australian infantry, however, and companies from both 1 RAR and 3 RAR had fleeting contacts with small groups of North Vietnamese at last light and into the evening.
D Company, 1 RAR—under Major Tony Hammett—contacted a ten-man group of North Vietnamese while moving into ambush positions 2500 metres (2,734 yd) north of FSB Coral late in the afternoon. In a brief exchange the North Vietnamese broke contact after losing one killed, firing rocket-propelled grenades into the trees above the Australians and wounding one of them. During the evening B Company, 1 RAR—under the command of Major Bob Hennessy—had a further contact to the east with another ten-man group. Later, Major Colin Adamson's A Company detected 20 North Vietnamese moving on the perimeter utilising newly issued Starlight scopes and subsequently killed and wounded some of them. However, such events appeared to be chance encounters and caused the Australians no particular concern. By midnight the rain had stopped, and five minutes later the 1 RAR mortar position was probed and a fire-fight ensued, resulting in possibly three North Vietnamese being killed. Later it became apparent that they had been marking assault lanes, while at 02:25 three North Vietnamese from a forward reconnaissance party walked into a D Company, 1 RAR ambush and in the ensuing contact one was killed before they again broke contact, firing rocket-propelled grenades that killed one Australian and wounded 11 from a single platoon
. Yet despite a number of minor clashes the North Vietnamese successfully bypassed the Australian rifle companies, conducting a forced march under cover of darkness and rain to dig in within 250 metres (273.4 yd) of FSB Coral undetected.
Finally at 03:30, rocket and mortar fire began falling on FSB Coral, concentrating on 102 Field Battery and the 1 RAR Mortar Platoon positions in an intense bombardment lasting five minutes. Following a ten-minute pause a number of flares signalled the start of the assault. Intending to capture the field guns, two North Vietnamese companies rushed the Australians from the north-east firing their AK-47 assault rifles, with the 1 RAR Mortar Platoon taking the brunt of the initial attack, while the 1 ATF Defence Platoon was also pinned down by heavy machine-gun fire. The New Zealand howitzers and 3 RAR mortars began firing in support, however they failed to halt the North Vietnamese and the initial assault succeeded in over-running the 1 RAR mortars, killing five and wounding eight. The flank of the main assault force then ran through the position at speed before moving on towards the gun position. During their earlier reconnaissance, the North Vietnamese had likely observed the guns to be laid facing east and had probably planned to assault from the north as a result, yet shortly before the main attack the battery had fired a mission to the north and the guns were now directly facing their axis of assault. Moving in long straight lines across a frontage of 150 to 200 men, the main North Vietnamese assault moved against the gun position as the Australian gunners opened fire over open sights with Splintex rounds at point blank range, with thousands of darts ripping through their ranks and breaking up successive waves into small groups. Amid the confusion, follow-up sections hesitated upon reaching the mortar position, while other groups skirmished around the flanks and between the artillery and mortars.
Meanwhile, the 1 RAR Anti-Tank Platoon—commanded by Lieutenant Les Tranter—also engaged with Splintex from their 90 mm RCLs, firing across the front of the mortars and relieving the immediate pressure on them. However, with the North Vietnamese having successfully achieved a break-in, and faced with the possibility of imminent annihilation, the 1 RAR Mortar Platoon second-in-command—Lieutenant Tony Jensen—was forced to direct the RCLs onto his own position, to which Bennett agreed. As the North Vietnamese attempted to turn the captured mortars against the Australians, the flechette darts swept the area, clearing everything above ground, causing heavy casualties among the assaulting force and damaging a number of mortar tubes. Elsewhere, the North Vietnamese assault had reached the Australian gun position, over-running two guns as desperate close quarters fighting broke out between the emplacements. The attackers subsequently succeeded in capturing No. 6 gun on the extreme edge of the gun-line and then attempted to destroy it with satchel charge
s. In both the mortar and artillery positions the North Vietnamese and Australians occupied adjacent pits, fighting each other at close range for their possession. The gun position officer—Captain Ian Ahearn—co-ordinated the defence, and the Australians finally drove off the assault with grenades and small arms, as well as Splintex rounds fired from the Anti-Tank Platoon. Meanwhile, with the assault falling mainly on 1 RAR and 102 Field Battery, to the west 3 RAR had largely remained out of contact.
Although the North Vietnamese troops were well-trained and equipped they were ultimately unable to prevail against the superior fire power of the Australian infantry and gunners, which had turned the battle in their favour. Throughout the night, fire support was co-ordinated by the 1 RAR command post and the fire support co-ordinating centre, which controlled integral fires from 102 Field Battery, its direct support battery, as well as from 161 Battery RNZA and the 81 mm mortars from 3 RAR. Yet the Australian gunners soon ran out of Splintex rounds, and they were forced to use standard high-explosive with their direct-action fuses set to 'delay'. The guns were then depressed to fire the shell at the ground approximately 40 to 50 m (43.7 to 54.7 yd) in front of the emplacement, which caused the round to ricochet and explode in the air above the heads of the assaulting force, an expedient which proved very effective. The Australians were also supported by artillery from a number of neighbouring American batteries that were in range, as well as by aerial strafing from helicopter gunships and continuous illumination by flares. Forward observers adjusted the artillery to within 20 metres (21.9 yd) of the Australian position, while C-47 Spooky gunships armed with mini-guns fired thousands of rounds into the assaulting forces.
After an hour of intense fighting, by 04:30 the main attack began to falter and the North Vietnamese subsequently withdrew into a rubber plantation to the north-east, carrying many of their dead and wounded. However, in an attempt prevent the Australians from following them a company-sized force remained, and the Australian gunners attempted to engage them with their remaining Splintex rounds and high explosive. Taking advantage of the extinguishing of a fire that the Australians had been using to direct the helicopter gunships, the North Vietnamese again attacked at 05:00 in an effort to further cover their withdrawal. Greatly reduced in strength, however, the attack was quickly broken up in a crossfire of high explosive and Splintex. A series of sporadic contacts then took place between the Australians and withdrawing North Vietnamese parties, while at 05:30 a helicopter light-fire team became effective and forced the North Vietnamese rearguard to abandon its positions. Also during this time, rockets and mortars had landed on B Company, 1 RAR 1500 metres (1,640.4 yd) to the south-east, killing one Australian and wounding another. At 05:45, 161 Battery RNZA began firing on likely withdrawal routes as the pre-dawn light began to appear. The Australians then began a sweep of their position, with 102 Field Battery clearing the gun position while Bennett accompanied the 1 RAR Anti-Tank Platoon and a regimental medical officer's party to clear the rest of the perimeter. A number of North Vietnamese soldiers were subsequently located, with the last killed in the gun position at 06:10. The two patrols then met in the mortar position while a patrol from 3 RAR carried out a similar sweep from north to south, and FSB Coral was finally cleared by 06:25. By 06:30 the evacuation of the Australian dead and wounded began by helicopter. The communists finally completed their withdrawal by 08:00.
The fighting had been costly for both sides. Australian casualties included nine killed and 28 wounded, while one howitzer and two mortars had been damaged.The bulk of the Australian casualties had been suffered by the 1 RAR Mortar Platoon. Those men not killed or wounded suffered battle shock and they were subsequently withdrawn to Nui Dat and temporarily replaced by men from 3 RAR until reinforcements could be obtained. See . North Vietnamese casualties included 52 dead, who lay strewn around the perimeter, while 23 small arms and seven crew-served weapons had also been captured by the Australians. While Radio Hanoi
quickly announced a major North Vietnamese victory there was little doubt that the Australians had convincingly repulsed the attack, even if they had come close to suffering a military and political catastrophe, with the task force headquarters itself nearly being destroyed. The initial delays during the fly-in had left the defenders spread haphazardly and, had the North Vietnamese assaulted without the preparatory fire that ultimately alerted the Australians, the result may have been different. Equally the fortunes of war had resulted in the Australian guns being laid in the direction of the main North Vietnamese assault, and the firepower they afforded had probably been decisive. The occupation of FSB Coral was one of the first such operations conducted by 1 ATF and many of the deficiencies evident had been due to this inexperience. Command and control had been insufficient and in hindsight the lack of co-ordination in setting up the defence could have been avoided with the appointment of a local defence commander. The absence of proper aerial reconnaissance prior to insertion had also resulted in units and their supporting elements landing on unsuitable ground in full view of the North Vietnamese, while the delay in the insertion of the second battalion denied them enough time to establish their positions before night fell. Failures in the assessment and timely distribution of intelligence were also identified.
armoured personnel carriers from A Squadron, 3CAV (less one troop
)—under the command of Major John Keldie—arrived at Coral the same day, after escorting the rear echelons and 155 mm M109 self-propelled artillery
from A Battery, US 2/35th Artillery Regiment
. The APCs were then split between the fire support bases, with 1 Troop assigned to 1 RAR and 2 Troop to 3 RAR, with Keldie appointed as local defence commander at FSB Coral in order to co-ordinate the actions of units on the perimeter. 1 Field Squadron
also provided engineer teams to each combat arm, while other elements prepared command post bunkers and fortifications within the fire support bases.
The unsuccessful assault against FSB Coral on the night of 12/13 May had demonstrated that the North Vietnamese would react violently to Australian attempts to control AO Surfers, and with 1 ATF deployed astride a key route to Saigon and threatening a number of communist bases and staging areas located nearby, further heavy fighting was expected over the following days. In response, the Australians were forced to refine their tactics and Hughes decided to establish strong defensive positions in order to destroy the North Vietnamese by fire, rather than by the painstaking patrolling more familiar to the Australians. The FSBs would be heavily defended by night, while the battalions would conduct defensive patrols by day. Later, fighting patrols up to company-size with armoured support would then be used to locate and destroy the Viet Cong main force bases. As such the Australian concept of operations subsequently evolved from one of searching and clearing in order to locate and cut infiltration and withdrawal routes, into a series of reconnaissance-in-force operations from heavily defended bases. Meanwhile, in AO Manly, 3 RAR continued patrolling for the next seven days, successfully ambushing staging areas and infiltration routes between 13−19 May for the loss of one soldier killed.
On 14 May there were a number of patrol clashes in AO Bondi, as both sides tried to determine the intentions of the other. The Australians sent out platoon-sized defensive patrols between 3 to 4 km (1.9 to 2.5 mi) from Coral and in nine contacts they suffered three killed and five wounded, while North Vietnamese casualties included 12 killed and two wounded. Later two more Australians were wounded by a rocket-propelled grenade fired into FSB Coral. During the afternoon the patrol activity resulted in heavy fighting, and two separate actions fought within half an hour of each other by different platoons from 1 RAR led to two Australians being awarded the Distinguished Conduct Medal
(DCM)—Lance Corporal David Griffiths and Private Richard Norden. The communists appeared to be probing the Australians to gain information on the their dispositions and these efforts continued the following day with the defenders observing two North Vietnamese near the perimeter of FSB Coral, while patrols from 1 RAR later contacted a number of small groups and uncovered a recently used company-sized camp just 1000 metres (1,093.6 yd) from the base. By 15 May the Australians considered their defences to be properly co-ordinated, while nearby 141 NVA Regiment was again preparing to attack Coral after evading the intensive patrolling. Yet that night a large number lights and flares were observed by the defenders, effectively warning them of the impending assault.
, with a total of 60 guns from three batteries of 105 mm field guns, one battery of 155 mm howitzers, one 8 inches (203.2 mm) battery and nine 81 mm mortars firing in support, augmented by air support from three heavy fire teams (each of three Iroquois helicopter gunships) and three fighters
with bombs and napalm
. Regardless, at 02:40 the North Vietnamese launched a battalion-sized attack, which initially fell on A and B Companies. Even with the artillery and mortars concentrating on close defensive fire tasks, the assault was largely held at the perimeter, although they did succeed in over-running part of 3 Platoon, A Company. Commanded by Lieutenant Neil Weekes, the platoon had been hit heavily by indirect fire during the initial bombardment and had suffered several casualties. Concentrating on the gap created in the Australian perimeter, the North Vietnamese then assaulted with the support of 12.7 mm DShK
heavy machine-guns. Ordering his men to fix bayonets, Weekes successfully reorganised the defences however, and called in close mortar fire to stabilise the position, resulting in heavy casualties among the assaulting force. He was later awarded the Military Cross
for his leadership. Unable to achieve a break-in, the North Vietnamese then broadened their attack to include C Company, engaging three of the four Australian companies on the perimeter. However, after successfully opening a number of gaps in the wire, they failed to press home their attack.
By 04:00 A Company was still heavily engaged and the Australians called in helicopter light-fire teams and C-47 Spooky gunships, which dropped flares continuously from 04:30 to illuminate the battlefield. By 05:00 the main attack was halted and the North Vietnamese began withdrawing, just as the Australians were beginning to run low on ammunition. During the lull A Company was resupplied by APC, while the Australians pushed an RCL team forward to provide additional support. At 05:15 the North Vietnamese attacked again, targeting the boundary between A and C Companies on the northern edge of the perimeter, only to be repulsed by mortar fire. Later a two-battalion attack on A, B and C Companies was also turned back. The Australians then counter-attacked with elements of A Company supported by APCs, regaining the lost 3 Platoon section post. Finally, after a six-hour battle the North Vietnamese broke contact at 06:30 and withdrew with their dead and wounded, fighting a series of rearguard actions to prevent follow-up. The Australians also began collecting their casualties for evacuation, while another resupply was completed with APCs. 1 RAR subsequently commenced a clearance of the area, with the four Australian rifle companies patrolling to a depth of 1000 metres (1,093.6 yd), killing one North Vietnamese soldier and capturing another. Five Australians had been killed and 19 wounded, while two US artillerymen were also wounded during the fighting. Only 34 North Vietnamese bodies were counted on the perimeter at dawn, however intelligence later indicated that fewer than 100 of the 790 attacking troops had survived unwounded. Meanwhile, in an attempt to disrupt the North Vietnamese withdrawal, Keldie led a troop of cavalry from Coral, engaging a North Vietnamese battalion during a pursuit that lasted until 15:00.
On 17 May, Westmoreland visited FSB Coral and congratulated the task force on its defence. Both Australian battalions continued to patrol with minor contacts, and during one such incident at least six North Vietnamese were killed when a group of approximately 35 was engaged by artillery and armed helicopters after being observed by scouts from B Company, 3 RAR. During the week that followed Australian patrols clashed with groups of North Vietnamese moving through AO Surfers, many of them from 165 NVA Regiment, which was believed to be withdrawing into War Zone D after attacking Tan Son Nhut airbase
, near Saigon. A Company, 3 RAR subsequently occupied a blocking position on the Suoi Ba Pho creek, ambushing North Vietnamese moving northwards and directing mortar firing onto evasion routes, killing eight and capturing two. Elsewhere, C Company, 3 RAR located and destroyed a number of base camps in the vicinity of FSB Coogee. Meanwhile, with the approval of MacDonald, Hughes departed on a long-planned leave to Singapore
on 18 May, and Colonel
Donald Dunstan
, the task force second-in-command, took over as Commander 1 ATF on 20 May. A respected and experienced leader, he quickly took control amidst growing tension.
At 01:00 on 22 May FSB Coral was again attacked, though not on the same scale as before, coming under a short but accurate mortar bombardment that was subsequently broken up artillery and mortar fire. In order to bolster his defences and provide an increased offensive capability, on 21 May Dunstan ordered the Centurion tanks
from C Squadron, 1st Armoured Regiment to redeploy the 120 kilometres (74.6 mi) from Nui Dat. Under the command of Major Peter Badman, the slow-moving armoured column departed on 22 May, traversing the difficult terrain that included a number of old, rusting Bailey bridge
s, which threatened to collapse under the 50-tonne weight of the Centurions. Moving via the inland route under cover provided by an observation aircraft from 161 Reconnaissance Flight, they drove north on Route 2, then west on Highway 1 to Long Binh where they staged overnight. Just north of Blackhorse the lead vehicle of the convoy hit a road mine, damaging a dozer tank but resulting in no casualties. They finally arrived at FSB Coral at 02:30 on 23 May. Four tanks from 1 Troop were subsequently allocated to 1 RAR, while 2 Troop was allocated to 3 RAR. Two American M42 40 mm Self-Propelled Anti-Aircraft Guns
had also accompanied the tanks and further strengthened the Australian FSBs in a ground support role.
On 25 May, 3 RAR began local defensive and familiarisation patrols. Four Centurion tanks from 2 Troop, C Squadron were ordered to redeploy to FSB Balmoral to bolster the defences, escorted by two infantry platoons from B Company, 1 RAR under Captain Bob Hennessy. En route, the North Vietnamese contacted the Australian infantry from a series of bunkers, pinning them down with machine-gun fire at close range. In response the Australian tanks moved forward, suppressing the bunkers with canister
rounds while the infantry was extracted. The Australians had struck the edge of a large, defended base camp estimated at company-size, however under orders to continue to Balmoral before nightfall, they broke contact. The column subsequently arrived at FSB Balmoral without further incident at 15:30 and B Company, 1 RAR then returned to FSB Coral by helicopter. At least two North Vietnamese were killed in the encounter, while one Australian was wounded. Although a relatively minor action, the tanks had been decisive and the engagement was early proof of their effectiveness in co-operation with the infantry. Meanwhile, the North Vietnamese commander was no longer able to tolerate the Australian encroachment into his base areas, and with FSB Balmoral located just 1500 metres (1,640.4 yd) away, he subsequently tasked 165 NVA Regiment—commanded by Phan Viet Dong—to attack Balmoral. That evening tracer rounds, shots and lights again alerted the defenders of an impending attack.
At 03:45 on 26 May the North Vietnamese began a heavy bombardment with mortar and rockets, accompanied by machine-gun and small-arms fire. Immediately following the barrage, Balmoral was subjected to a ground assault across the open ground from the north-east by a force of up to battalion strength, falling primarily on D Company, commanded by Major Peter Phillips. At the same time the North Vietnamese conducted a feint on the southern perimeter opposite A Company—under Major Horrie Howard—using Bangalore torpedoes to break through the wire, although the gap was not exploited.There are some inconsistencies regarding the dispositions of 1 RAR during both attacks on FSB Balmoral. Some sources indicate that A Company occupied the western perimeter and that the feint had been conducted against the southern end of their positions, while C Company occupied the southern perimeter itself, see and . Other sources place A Company on the southern perimeter with C Company to their west, see and . The dispositions adopted here are those from the official history. Two Centurions that had been sited directly on the main axis of assault but concealed during the day, rolled forward under the cover of darkness. Their machine-guns and canister rounds proved telling during the fighting; the main attack stalled as it reached the wire before being repelled with heavy casualties by the combined firepower of the Australian infantry and tanks. Meanwhile, as sporadic mortar, rocket-propelled grenade and small-arms fire continued, to the south FSB Coral was also hit with suppressing fire from mortars, recoilless rifles and rocket-propelled grenades between 04:15 and 04:30, killing one Australian and wounded another. The defenders at Balmoral then directed fire from helicopter gunships and C-47 Spooky aircraft onto likely assembly areas and mortar base plate locations. Around 05:00 the North Vietnamese finally broke contact and withdrew, removing the majority of their casualties under covering fire as the Australian artillery fired on their escape routes. Clearing patrols from 3 RAR then swept the area at first light but found only six North Vietnamese dead and a large quantity of weapons, ammunition and equipment. The Australians subsequently began the evacuation of their casualties, having lost a further three dead and 14 wounded.
from No. 2 Squadron RAAF
onto a nearby bunker system. In what would become the first Australian combined infantry and tank assault since the Bougainville campaign against the Japanese in the Second World War, the tanks were called forward and attacked the bunkers with anti-tank solid shot and machine-guns, while the infantry indicated targets with their M79 grenade launcher
s. Moving forward two or three across, the Centurions crushed many of the bunkers with their tracks and engaged others at point-blank range with their main armament. Further bunkers were exposed when the foliage was cut away by canister rounds and the infantry followed the tanks using rifles and grenades, while assault pioneers provided support with a flame-thrower as artillery and mortar fire engaged depth targets.
The bunkers were well constructed and camouflaged, while visibility was limited to just 10 to 20 m (10.9 to 21.9 yd) among the dense vegetation and consequently many were not located by the Australians until they were upon them. The bunkers were sited to be mutually supporting, and the North Vietnamese defending them responded with a crossfire of RPG-2
rocket-propelled grenades, however the heavy armour of the Centurions proved impervious and remained undamaged.The newer RPG-7
was able to penetrate the Centurion hull however, as was demonstrated during subsequent contacts in the following months. See . During a three-hour battle the Australians and North Vietnamese fought each other from bunker to bunker. However, with aerial reconnaissance revealing that the bunker system was part of a much larger base area, and with the Australian force judged too small to deal with it, Bennett directed Hammett to retire by late afternoon. Amidst a heavy rain the Australians broke contact at 16:00 under the cover of artillery and mortar fire, and they moved quickly back to FSB Coral. Fourteen bunkers had been destroyed, while seven North Vietnamese bodies were counted and quantities of weapons, ammunition and documents were also captured. However many more men were undoubtedly entombed in the bunkers after being crushed by the tanks, making a comprehensive body count impossible. Although it had been a fierce engagement the Australians suffered no casualties, a fact which was attributed to the effectiveness of the tanks, and further validated Dunstan's decision to call them forward from Nui Dat. Second Lieutenant John Salter was later awarded the Military Cross for his leadership during this and other actions.
Over the following days 1 ATF continued patrolling, however these operations resulted in only small-scale contact with the North Vietnamese. On 27 May an Australian Sioux light observation helicopter was damaged by ground fire during a reconnaissance flight 3 kilometres (1.9 mi) outside AO Newport, and air strikes on the area exposed several bunkers which were likely to have been used by the North Vietnamese as a headquarters; they were subsequently destroyed by artillery fire.
aircraft. From 05:00 until first light artillery from FSB Coral provided continuous battlefield illumination to stymie North Vietnamese attempts to clear their dead and wounded, and they finally withdrew by 05:30.
At first light a clearing patrol from D Company, 3 RAR swept the area with tanks and APCs in support, killing and capturing a number of attackers that had been pinned down in old B-52 bomb craters to the north of Balmoral. The daylight revealed that the North Vietnamese had once again been soundly defeated leaving 42 dead and seven prisoners, while Australian losses were one killed and eight wounded. Quantities of weapons, clothing, ammunition and equipment were also recovered by the Australians. Phillips was subsequently awarded the Military Cross for his leadership during the battle. Many of the North Vietnamese dead were teenagers of 16 or 17 years, evidence that the PAVN had begun drafting 15 year-old boys into its combat units; as had happened after the earlier fighting, their bodies were collected by a bulldozer and buried in a mass grave
. Later, a large number of shell scrapes were discovered to the north-east of Balmoral during an aerial reconnaissance by a Sioux light observation helicopter, and they were thought likely to have been used by the North Vietnamese as an assembly area before being engaged by artillery firing defensive fire tasks early in the battle. The successful defence of Balmoral and the high ratio of North Vietnamese killed had confirmed the judgement of MacDonald and Dunstan and validated the decision to adopt an aggressive defence with strong static positions and forceful patrolling. The failed assault proved to be the final attempt to remove 1 ATF from AO Surfers, and there were no further attacks by the North Vietnamese against either Coral or Balmoral.
. Meanwhile, 7 Platoon moved to assist but was also pinned down, with one section suffering heavy casualties and losing an M60 machine-gun. Campbell struggled to establish a company defensive position, pushing 8 Platoon forward covered by armed helicopters and indirect fire. Yet with the two forces facing each other at only 10 to 15 m (10.9 to 16.4 yd), the Australian artillery and mortars were rendered ineffective and Dunstan subsequently dispatched two tanks from Coral to reinforce them as heavy fighting developed. Supported by APCs, the Australian infantry and tanks then assaulted and cleared several bunkers, allowing the lead platoon to withdraw after three hours of fighting. Suffering one killed and seven wounded, C Company broke contact by 11:55, withdrawing 500 metres (546.8 yd) as artillery, mortars and air strikes engaged the bunker system. Three days later C Company returned to the area to recover the lost machine-gun only to find the position as they had left it; strewn with dead bodies and caved-in bunkers with the battlefield having been abandoned by the North Vietnamese, who had also withdrawn following the Australian assault. The tanks had destroyed at least eight bunkers, while communist casualties included 24 dead and a further eight believed killed. Another group of 13 had also been engaged in the open by artillery, and were also possibly killed.
The North Vietnamese then appeared to abandon AO Surfers to the Australians, and increasingly diverted their movement around Coral and Balmoral. Operation Toan Thang I continued for another six days regardless, and 1 ATF patrolled extensively into June. However with contacts decreasing, on 1 June Weyand judged the Australian blocking operation to have been successful in limiting the offensive against Saigon, and directed US and ARVN units to relieve them. Meanwhile, Hughes returned from leave and visited Dunstan at FSB Coral to discuss the situation and the task force's redeployment to Phuoc Tuy. FSB Balmoral was subsequently closed on 5 June, with 3 RAR and its direct support battery returning to Nui Dat by air, while FSB Coral was also closed the following day. The operation finally concluded on 6 June, with 1 RAR returning to Nui Dat by Chinook after handing over the area of operations to the US 1st Infantry Division, while the logistic, artillery and armoured elements returned by road convoy. The approach of the wet season concerned Hughes, who believed it could hinder the movement of the Centurions and leave them stranded 120 kilometres (74.6 mi) from base until the dry season. The tanks departed FSB Coral on 5 June; travelling via Bearcat and Route 15, the road move went without incident and they returned to Nui Dat by 17:00 on 6 June.
they had ultimately fought their largest, most hazardous and most sustained battle of the war. For their involvement in the action the Royal Australian Regiment
, the 3rd Cavalry Regiment and 1st Armoured Regiment were all subsequently awarded the battle honour
'Coral-Balmoral', one of only five awarded to Australian units during the war.
The fighting represented a watershed in the campaign for the Australians, and while they had deployed outside Phuoc Tuy province previously they now faced regular North Vietnamese formations and Viet Cong Main Force units operating in battalion and regimental strength, rather than southern Viet Cong guerrillas. Deployed astride their lines of communication, the Australians had forced the communists to respond, resulting in a set-piece battle far removed from the counter-insurgency doctrine they normally espoused. Yet while the battle ended in victory for the Australians, they had come close to suffering defeat at the hands of the North Vietnamese. Inexperienced at large air-mobile operations, poor reconnaissance and inadequate operational planning had caused delays and confusion during the fly-in to FSB Coral, leaving 1 ATF exposed to attack on the first night. The North Vietnamese had fought in greater numbers, with heavier firepower and greater intensity than previously experienced by the Australians in Vietnam, forcing them to refine their tactics. Later, the Australian use of platoon patrols to search an area and to conduct ambushes was challenged by the constant movement of North Vietnamese forces operating in superior strength, which threatened to quickly overwhelm an isolated patrol.
Prolonged operations outside of Phuoc Tuy during the first half of 1968 had placed considerable strain on the Australian logistic system. Modelled on the experience of Operation Coburg, logistic resupply for Operation Toan Thang I again required the Vung Tau-based 1ALSG to be split in order to provide a forward logistic element at the US base at Long Binh. A forward task force maintenance area had also been established, first at Bearcat and then later at FSB Coral. Re-supply by road had continued daily from Long Binh to Bearcat, while following the move to Coral re-supply was primarily by air due to the threat of possible interdiction. Meanwhile, movement from unit echelons in the forward maintenance area was also undertaken by helicopter. Units in the field received one fresh meal each day, with the other two meals based half on the American C ration and half on the Australian combat ration. Although the supply of fuel and ammunition was generally satisfactory, stocks had run dangerously low on one occasion during heavy fighting at FSB Coral due to the calculation of usage rates based on previous operations, requiring an emergency night-time resupply by Chinook while the base was under attack. Re-supply of water had also been particularly difficult due to unavailability of a permanent water point. Ultimately water had to be delivered by air at a rate of 14000 litre per day from Long Binh using rubber fuel bladders.
While many of the failings in Australian command arrangements evident from the initial stages of the battle were rapidly rectified as the task force developed more exact standard operating procedures, future operational planning would need pay greater heed to intelligence when determining the strength of patrols, as well as providing for quick reaction forces and rapidly responsive indirect fires to support sub-units operating independently. Ultimately the firepower of the Australian combined arms teams
had proven decisive, however. Indeed, while the value of using armour in Vietnam was originally questioned by the Australian Army, the performance of the tanks during the fighting at Coral and Balmoral had demonstrated their advantages once and for all. Whereas before the battle some infantry had doubted the usefulness or necessity of the Centurions, afterwards they did not like working without them. Over the next four years the tanks would provide invaluable close support, particularly during the clearance of bunker systems, proving to be powerful weapons in both offence and defence and being credited with limiting casualties among the Australian infantry.
For the North Vietnamese however, the battle was just one part of the intense May Offensive, although they later claimed to have killed 800 Australians during a single attack—a fact which indicated the importance they may have placed on it at the time.Although years later the fighting at Coral and Balmoral did not rate even a mention in PAVN official history of the conflict, see . They had reacted quickly and proficiently to mount a battalion attack on the first night in an attempt to push the Australians off their line of communications, however while this and the subsequent attacks on Coral and Balmoral had been well co-ordinated, they had repeatedly surrendered the element of surprise with preparatory fire and poor light discipline that alerted the defenders on each occasion. Meanwhile, inflexibility in command-and-control arrangements and a lack of radio communications had forced the North Vietnamese to operate on fixed schedules, preventing them from taking the initiative or responding rapidly to changing situations. Such inflexibility had resulted in predictability, with the communist commanders ultimately committing their forces to a frontal assault on Coral on the first night, and mounting very similar attacks against Balmoral on the nights of 26 and 28 May, both of which ended in costly failures.
Meanwhile, 4th Battalion, Royal Australian Regiment
(4 RAR) had arrived to replace 2 RAR. Joined by two New Zealand infantry companies—W and V Companies—it was designated 4 RAR/NZ (ANZAC) and under the command of Lieutenant Colonel Lee Greville they commenced operations in June. Later, on 13 June, 1 RAR was again deployed to protect the bases at Long Binh and Bien Hoa from rocket attacks, operating to the north and east of Bien Hoa as part of a wider allied operation, known as Operation Toan Thang II. On 23 June the battalion was joined by 4 RAR/NZ (ANZAC) and 1 ATF headquarters was deployed under Dunstan's command as the operation expanded. On 3 July, 1RAR was relieved by 3RAR and returned to Nui Dat. Largely uneventful, the operation resulted in minimal contact and lasted until 18 July. Three Viet Cong were killed and 13 captured, while Australian casualties included one killed and one wounded. The Australians then attempted to interdict Viet Cong supplies, with a small force of tanks and APCs supported B Company 3 RAR occupying the area along Route 15 to the west and north-west of Baria between 25–30 June during Operation Ulladulla. As part of the operation the tanks ambushed a river and sank seven loaded sampan
s with their 20-pounder main armament.
On 10 June 1968, General Creighton Abrams
replaced Westmoreland and the change in command had resulted in a transformation of both the concept of the war and its conduct. Abrams directed that the allied main effort would switch to protecting population centres, rather than searching for and attempting to destroy North Vietnamese and Viet Cong main force units as they had done previously. Equally, the prosecution of the war would increasingly be handed over to the South Vietnamese under a policy of Vietnamization
, with the Americans aiming to keep North Vietnamese and Viet Cong units off balance to prevent them from interfering with resupply and reinforcement until the South Vietnamese could fight the war on their own. For the Australians the change in allied strategy foreshadowed a return to the pacification of Phuoc Tuy province. Operations outside the province over the previous eighteen months had been costly, and of the 228 Australians killed and 1,200 wounded during the war to that point almost two-thirds had been killed since January 1967.147 Australian soldiers were killed in Vietnam between January 1967 and 30 June 1968, with 62 killed and 310 wounded in the first six months of 1968 alone. See . From July, 1 ATF completed a number of search-and-clear operations along the northern border areas and west of their Tactical Area of Responsibility
in Phouc Tuy province.
Meanwhile, the Viet Cong began their third general offensive for the year on 17 August 1968, attacking dozens of towns and military installations throughout South Vietnam with rockets and mortars, including Saigon. As part of the allied response the Australians were deployed to defend Ba Ria, the provincial capital, while during 20−23 August, B and C Company, 1 RAR with a troop of Centurion tanks were involved in intense urban fighting while supporting South Vietnamese forces to clear a company-sized force from D445 VC Battalion occupying Long Dien. At least 17 Viet Cong were killed during the fighting, while Australian casualties included six wounded. During the next three weeks, all three Australian battalions were deployed on search-and-destroy operations, yet the Viet Cong successfully eluded them. Continuing until 30 September, the renewed offensive lacked the scale of the previous attacks and again resulted in heavy communist casualties, failing to produce lasting military gains and contributing to an overall decline in Viet Cong and North Vietnamese combat power in the south. Yet such failures were neither final nor decisive and Hanoi seemed to increasingly hold the upper hand. The war continued regardless, while allied military strategic objectives were increasingly coming into question. In late-1968 1 ATF was again deployed outside its base in Phouc Tuy, operating against suspected communist bases in the May Tao and Hat Dich areas as part of Operation Goodwood. The operation led to sustained fighting during a 78-day sweep between December 1968 and February 1969 and later became known as the Battle of Hat Dich
.
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...
between the 1st Australian Task Force
1st Australian Task Force
The 1st Australian Task Force commanded the Australian and New Zealand Army units deployed to South Vietnam between 1966 and 1972. 1 ATF was based at Nui Dat in Phuoc Tuy Province...
(1 ATF) and the North Vietnamese 7th Division and Viet Cong, 40 kilometres (24.9 mi) north-east of Saigon. Following the defeat of the communist Tet offensive in January and February, in late April two Australian infantry battalion
Battalion
A battalion is a military unit of around 300–1,200 soldiers usually consisting of between two and seven companies and typically commanded by either a Lieutenant Colonel or a Colonel...
s—the 1st
1st Battalion, Royal Australian Regiment
1st Battalion, Royal Australian Regiment is a regular light infantry battalion of the Australian Army. 1 RAR was first formed as the 65th Australian Infantry Battalion in 1945 and since then has been deployed on active service during the Korean War, the Malayan Emergency and the Vietnam War...
and 3rd Battalions, Royal Australian Regiment
3rd Battalion, Royal Australian Regiment
3rd Battalion, The Royal Australian Regiment is a parachute infantry battalion of the Australian Army, based in Sydney. 3 RAR was initially formed in 1945 as the 67th Battalion and has seen active service in Japan, Korea, Malaya, South Vietnam, East Timor, the Solomon Islands, Afghanistan and Iraq...
(3 RAR)—with supporting arms, were again deployed from their base at Nui Dat
Nui Dat
Nui Dat in Phuoc Tuy Province was the location of a prominent Australian military base in South Vietnam during the Vietnam War. The site was chosen by Lieutenant General John Wilton in 1966 and was built mainly by men from the 6th Battalion, Royal Australian Regiment...
in Phuoc Tuy province
Phuoc Tuy Province
Phước Tuy Province was a province of South Vietnam. It now mostly corresponds to Ba Ria-Vung Tau Province, just southeast of Ho Chi Minh City....
to positions astride infiltration routes leading to Saigon, in order to interdict renewed movement against the capital. Part of the wider allied Operation Toan Thang I
Operation Toan Thang I
Operation Toan Thang I was a US and ARVN operation conducted between 8 April 1968 and 31 May 1968 in the Vietnam war. Toan Thang, or "Complete Victory", was part of a reaction to the Tet offensive by forces allied with the Republic of Vietnam designed to put pressure on PLAF and PAVN ...
, it was launched in response to intelligence reports of another impending communist offensive; however, the Australians experienced little fighting during this period. Meanwhile, the Viet Cong successfully penetrated the capital on 5 May, plunging Saigon into chaos during the May Offensive
May Offensive
During the early morning hours of 5 May, communist units initiated PHASE II of the Tet Offensive of 1968 by striking 119 targets throughout South Vietnam, including Saigon. This time, however, allied intelligence was better prepared, stripping away the element of surprise...
in an attempt to influence the upcoming Paris peace talks
Paris Peace Accords
The Paris Peace Accords of 1973 intended to establish peace in Vietnam and an end to the Vietnam War, ended direct U.S. military involvement, and temporarily stopped the fighting between North and South Vietnam...
scheduled to begin on the 13th. During three days of intense fighting the attacks were repelled by US and South Vietnamese forces, and although another attack was launched by the Viet Cong several days later, the offensive was again defeated with heavy losses on both sides, causing significant damage to Saigon as well as numerous civilian casualties. The North Vietnamese and Viet Cong were forced out of the city.
1 ATF was redeployed on 12 May to obstruct the withdrawal of forces from the capital, with two the battalions establishing a fire support base
Fire support base
A fire support base is a military encampment designed to provide indirect fire artillery fire support to infantry operating in areas beyond the normal range of direct fire support from their own base camps....
(FSB), named FSB Coral, just east of Lai Khe
Lai Khe
Lai Khê is a small settlement in Vietnam, to the northwest of Ho Chi Minh City and about 20 km north of Thủ Dầu Một. During the Vietnam War it was a garrison town as the 5th Division of the Army of the Republic of Vietnam was based there for most of the 1960s and 1970s.Tucker, pp. 526–533...
, Binh Duong Province
Binh Duong Province
Bình Dương is a province of Vietnam. It is located in the southeastern part of the country, immediately to the north of Ho Chi Minh City. The province was created from Song Be province on January 1, 1997.-Geography:...
in an area of operations known as AO Surfers. However, poor reconnaissance and inadequate operational planning led to delays and confusion during the fly-in, and the Australians had only partially completed FSB Coral by the evening. The North Vietnamese subsequently mounted a number of battalion-sized assaults against it on the night of 12/13 May, with a heavy bombardment from 03:30 signalling the start of the assault. Exploiting the disorganised defence to penetrate the Australian perimeter, 141 NVA Regiment temporarily captured a forward gun position during close-quarters fighting before finally being repulsed by superior firepower the following morning. Casualties were heavy on both sides and although the Australians had won a convincing victory, they had come close to suffering both a political and military defeat at the hands of the North Vietnamese. The following day 1 RAR was deployed to defend FSB Coral, while 3 RAR established FSB Coogee to the west to ambush staging areas and infiltration routes. Coral was again assaulted in the early hours of 16 May, coming under a heavy barrage followed by another regiment
Regiment
A regiment is a major tactical military unit, composed of variable numbers of batteries, squadrons or battalions, commanded by a colonel or lieutenant colonel...
al-sized attack. Again the base was penetrated but after a six-hour battle the North Vietnamese were forced to withdraw after suffering heavy losses. Expecting further fighting, the Australians were subsequently reinforced with Centurion tank
Centurion tank
The Centurion, introduced in 1945, was the primary British main battle tank of the post-World War II period. It was a successful tank design, with upgrades, for many decades...
s and additional artillery
Artillery
Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...
. On 22 May, FSB Coral was again attacked overnight, coming under a short but accurate mortar
Mortar (weapon)
A mortar is an indirect fire weapon that fires explosive projectiles known as bombs at low velocities, short ranges, and high-arcing ballistic trajectories. It is typically muzzle-loading and has a barrel length less than 15 times its caliber....
bombardment which was subsequently broken up by Australian artillery and mortars.
The Australians then moved against the communist base areas east of Route 16, with 3 RAR redeploying to establish FSB Balmoral on 24 May, 4.5 kilometres (2.8 mi) to the north. Now supported by tanks which had arrived from Coral just hours before, the Australian infantry
Infantry
Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...
at Balmoral were then subjected to a two battalion attack by 165 NVA Regiment. Following a very accurate rocket and mortar barrage at 03:45 on 26 May, the attack fell primarily on D Company before being repelled with heavy casualties by the combined firepower of the Australian tanks and infantry. The next day the Australians at Coral assaulted a number of bunker
Bunker
A military bunker is a hardened shelter, often buried partly or fully underground, designed to protect the inhabitants from falling bombs or other attacks...
s that had been located just outside the base, with a troop
Troop
A troop is a military unit, originally a small force of cavalry, subordinate to a squadron and headed by the troop leader. In many armies a troop is the equivalent unit to the infantry section or platoon...
of Centurions supported by infantry destroying the bunkers and their occupants without loss. A second major North Vietnamese attack, again of regimental strength, was made against Balmoral at 02:30 on 28 May but was called off after only 30 minutes after being soundly defeated by the supporting fire of the Australian tanks, artillery and mortars. Regardless, the battle continued into June as the Australians patrolled their area of operations. However, with contacts decreasing, 1 ATF returned to Nui Dat on 6 June, being relieved by US and South Vietnamese forces. The battle was the first time the Australians had clashed with regular North Vietnamese Army and Viet Cong main force units operating in battalion and regimental strength in conventional warfare
Conventional warfare
Conventional warfare is a form of warfare conducted byusing conventional military weapons and battlefield tactics between two or more states in open confrontation. The forces on each side are well-defined, and fight using weapons that primarily target the opposing army...
. During 26 days of fighting the communists suffered punishing losses and were forced to postpone a further attack on Saigon, while the Australians also suffered significant casualties. The largest unit-level action of the war for the Australians, today the battle is considered one of the most famous actions fought by 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...
during the Vietnam War.
Background
Based in Nui DatNui Dat
Nui Dat in Phuoc Tuy Province was the location of a prominent Australian military base in South Vietnam during the Vietnam War. The site was chosen by Lieutenant General John Wilton in 1966 and was built mainly by men from the 6th Battalion, Royal Australian Regiment...
in Phuoc Tuy province, the 1st Australian Task Force
1st Australian Task Force
The 1st Australian Task Force commanded the Australian and New Zealand Army units deployed to South Vietnam between 1966 and 1972. 1 ATF was based at Nui Dat in Phuoc Tuy Province...
was part of US II Field Force, Vietnam
II Field Force, Vietnam
II Field Force, Vietnam was a United States Army Corps-level command during the Vietnam War.Activated on 15 March 1966, it became the largest corps command in Vietnam and one of the largest in Army history. II Field Force was assigned the lineage of the XXII Corps, a World War II corps in the...
(IIFFV), under the overall command of Lieutenant General
Lieutenant General (United States)
In the United States Army, the United States Air Force and the United States Marine Corps, lieutenant general is a three-star general officer rank, with the pay grade of O-9. Lieutenant general ranks above major general and below general...
Frederick Weyand. By early 1968, 1 ATF had been reinforced and was at full strength with three infantry battalions supported by armour, artillery, aviation and engineers, while logistic arrangements were provided by the 1st Australian Logistic Support Group
1st Australian Logistics Support Group
The 1st Australian Logistic Support Group was a ground support unit of the Australian Army during the Vietnam War located at Vũng Tàu. The unit was formed in 1965 as the Australian Logistic Support Company and was redesignated as 1 ALSG in April 1966.1 ALSG commanded logistic support units to all...
(1 ALSG) based at the port of Vung Tau
Vung Tàu
Vũng Tàu is a city in southern Vietnam. Its population in 2005 was 240,000. The city area is including 13 urban wards and one village. It is the capital of Ba Ria-Vung Tau province, and is the crude oil extraction center of Vietnam. It is also known as one of the most beautiful cities of tourism...
. Commanded by Brigadier Ron Hughes
Ronald Lawrence Hughes
Major General Ronald Lawrence Hughes CBE, DSO was a senior infantry officer in the Australian Army, seeing service during the Second World War, the Korean War and the Vietnam War. Joining the Australian Army in 1937, after graduating from the Royal Military College, Duntroon in 1939 he served in...
, 1 ATF had continued to operate independently within Phuoc Tuy, and while the war had become a series of large-scale search-and-destroy operations in a war of attrition
Attrition warfare
Attrition warfare is a military strategy in which a belligerent side attempts to win a war by wearing down its enemy to the point of collapse through continuous losses in personnel and matériel....
for the Americans, the Australians had largely pursued their own counter-insurgency
Counter-insurgency
A counter-insurgency or counterinsurgency involves actions taken by the recognized government of a nation to contain or quell an insurgency taken up against it...
campaign despite the differences between Australian and American methods at times producing friction between the allies. Regardless, 1 ATF was also available for deployment elsewhere in the III Corps Tactical Zone
III Corps (South Vietnam)
III Corps was a corps of the Army of the Republic of Vietnam , the army of the nation state of South Vietnam that existed from 1955 to 1975...
and with the province coming progressively under control throughout 1967, the Australians would increasingly spend a significant period of time conducting operations further afield.
The Tet offensive began on 31 January 1968, with 85,000 to 100,000 North Vietnamese and Viet Cong troops simultaneously assaulting population centres and allied installations across South Vietnam in an attempt to incite a general uprising against the South Vietnamese government and its American supporters. In response, 1 ATF was deployed along likely infiltration routes in order to defend the vital Bien Hoa
Bien Hoa
Biên Hòa is a city in Dong Nai province, Vietnam, about east of Ho Chi Minh City , to which Bien Hoa is linked by Vietnam Highway 1.- Demographics :In 1989 the estimated population was over 300,000. In 2005, the population wss 541,495...
-Long Binh
Long Binh
Long Binh is a ward, in District 9 of Ho Chi Minh City, Vietnam.-Long Binh Post:During the Vietnam War, Long Binh Post was located near Bien Hoa, Dong Nai province. Vietnam, 33km from Saigon . The base functioned as a U.S. Army base, logistics center, and major command headquarters for United...
complex near Saigon between January and March, as part of Operation Coburg
Operation Coburg
Operation Coburg was an Australian military action during the Vietnam War. The operation saw heavy fighting between the 1st Australian Task Force and North Vietnamese Army and Viet Cong during the wider fighting around Long Binh and Bien Hoa...
. Heavy fighting resulted in 17 Australians killed and 61 wounded, while communist casualties included at least 145 killed, 110 wounded and five captured, with many more removed from the battlefield. Meanwhile, the remaining Australian forces in Phuoc Tuy were stretched thin, with elements of 3 RAR successfully repelling an assault on Ba Ria
Ba Ria
Bà Rịa is a town in Ba Ria–Vung Tau province in the southeast of Vietnam. Ba Ria is split from Vung Tau by a river crossed by Co May Bridge....
and later spoiling a harassing attack on Long Dien
Long Dien
Long Dien , is a district of Ba Ria-Vung Tau Province in the southeast region of Vietnam.As of 2003 the district had a population of 118,862. The district covers an area of 77 km²...
and conducting a sweep of Hoa Long, killing 50 Viet Cong and wounding 25 for the loss of five killed and 24 wounded.
At the strategic level the general uprising never eventuated, and in late-February the communist offensive collapsed after suffering more than 45,000 killed, against South Vietnamese and allied losses of 6,000 men. Regardless, it proved to be a turning point in the war and although it had been a tactical disaster for the North Vietnamese and Viet Cong, Hanoi emerged with a significant political victory as confidence in the American military and political leadership collapsed, as did public support for the war in the United States. Prior to Tet, American commanders and politicians had talked confidently about winning the war, arguing that General
General (United States)
In the United States Army, United States Air Force, and United States Marine Corps, general is a four-star general officer rank, with the pay grade of O-10. General ranks above lieutenant general and below General of the Army or General of the Air Force; the Marine Corps does not have an...
William Westmoreland
William Westmoreland
William Childs Westmoreland was a United States Army General, who commanded US military operations in the Vietnam War at its peak , during the Tet Offensive. He adopted a strategy of attrition against the National Liberation Front of South Vietnam and the North Vietnamese Army. He later served as...
's strategy of attrition had reached the point where the communists were losing soldiers and equipment faster than they could be replaced. Yet the scale of the offensive, and the surprise and violence with which it had been launched, had shocked the American public and contradicted such predictions of imminent victory; in its wake President Lyndon Johnson announced that he would no longer seek a second term in office. Tet had a similar effect on Australian public opinion, and caused growing uncertainty in the government about the determination of the United States to remain militarily involved in Southeast Asia. Amid the initial shock, Prime Minister John Gorton
John Gorton
Sir John Grey Gorton, GCMG, AC, CH , Australian politician, was the 19th Prime Minister of Australia.-Early life:...
unexpectedly declared that Australia would not increase its military commitment in Vietnam beyond the current level of 8,000 personnel.
On the ground, the war continued without respite and Hughes—the 1 ATF commander—turned his attention to D445 Provincial Mobile Battalion
VC D445 Battalion
The VC D445 Battalion, also known as the Viet Cong D445 Provincial Mobile Battalion of the Ba Ria Battalion, was a Local Force battalion of the Viet Cong during the Vietnam War. The battalion operated in the Đồng Nai river basin and also the Bien Hoa, Phước Tuy and Long Khánh provinces...
, deciding to strike at its base areas in the Minh Dam Secret Zone located in the Long Hai hills
Long Hải Hills
The Long Hải Hills are hills that are located near Long Hải, in Long Điền District, Ba Ria-Vung Tau Province, Vietnam.During the Vietnam War, the Long Hải's were a Viet Cong base area, known as Minh Dam secret zone. The VC D445 Battalion and VC C25 Company used the hills as a supply and staging...
south of Long Dien and Dat Do, 14 kilometres (8.7 mi) from Nui Dat. 5 RAR had suffered heavy casualties in February 1967 while operating in the Long Hais, which were heavily defended by mines and booby traps; despite previous operations by the US 173rd Airborne Brigade
173rd Airborne Brigade Combat Team
The 173rd Airborne Brigade Combat Team is an airborne infantry brigade combat team of the United States Army based in Vicenza, Italy...
in June 1966 and two smaller South Vietnamese operations, the area had remained a Viet Cong safe haven. However, this time the Australians would use two battalions supported by tanks and air strikes in an attempt to reduce the base area. Operation Pinnaroo began on 27 February, with 2 RAR
2nd Battalion, Royal Australian Regiment
2nd Battalion, Royal Australian Regiment is a regular light infantry battalion of the Australian Army. 2 RAR was first formed as the Australian 66th Battalion in 1945 and since then it has seen active service during the Korean War, Malayan Emergency and Vietnam War...
and 3 RAR cordoning off the complex with the rifle companies patrolling and ambushing at night in order to prevent the Viet Cong from escaping. On 8 March the Australians conducted a wide encircling movement to tighten the cordon, while a sustained bombardment by US B-52 heavy bombers and artillery targeted the hill the next day. A combined force of infantry from 3 RAR supported by armour then advanced on the foothills, before clearing the minefields and destroying an extensive base area which included a deep cave system that had first been used by the Viet Minh
Viet Minh
Việt Minh was a national independence coalition formed at Pac Bo on May 19, 1941. The Việt Minh initially formed to seek independence for Vietnam from the French Empire. When the Japanese occupation began, the Việt Minh opposed Japan with support from the United States and the Republic of China...
against the French in the 1950s. Each Australian rifle company then methodically searched its area of operations, while engineers destroyed the underground facilities; a task which required the use of tonnes of explosives.
The operation lasted until 15 April, with mines—including many M16s
M16 mine
The M16 mine is a U.S. made bounding anti-personnel mine. It was based on captured plans of the World War II era German S-mine and has similar performance. The mine consists of a cast iron body in a thin steel sleeve. A central fuze well on the top of the mine is normally fitted with a pronged M605...
that had been lifted by the Viet Cong from the controversial barrier minefield laid by the Australians at Dat Do—once again claiming a significant toll. Ten Australians were killed and another 36 were wounded, while known Viet Cong casualties included 21 killed, 14 wounded and 40 captured. Fifty-seven camps and bunker
Bunker
A military bunker is a hardened shelter, often buried partly or fully underground, designed to protect the inhabitants from falling bombs or other attacks...
systems were also destroyed, as were large quantities of weapons, munitions and supplies. Judged a success by the Australians despite their heavy losses, the operation had resulted in significant disruption to the Viet Cong and hindered their operations for some time. Regardless, with 1 ATF lacking the manpower to hold the area, the failure of South Vietnamese forces to permanently occupy the Long Hais meant that any gains were only fleeting, and the D445 Battalion headquarters soon returned to the area after ejecting a South Vietnamese regional force
South Vietnamese Regional Force
During the Vietnam War, the South Vietnamese Regional Forces were roughly akin to militias. Recruited locally, they fell into two broad groups - Regional Forces and Popular Forces . During the early 1960's the Regional Forces manned the country-wide outpost system and defended critical points, such...
company a few months later. Meanwhile, 7 RAR
7th Battalion, Royal Australian Regiment
The 7th Battalion, Royal Australian Regiment is a regular infantry battalion of the Australian Army. It was originally raised in 1965 as part of Australia's commitment to the Vietnam War and it eventually served two tours in Vietnam in 1967 and 1971...
had completed its last operation in March and was relieved by 1 RAR
1st Battalion, Royal Australian Regiment
1st Battalion, Royal Australian Regiment is a regular light infantry battalion of the Australian Army. 1 RAR was first formed as the 65th Australian Infantry Battalion in 1945 and since then has been deployed on active service during the Korean War, the Malayan Emergency and the Vietnam War...
on 9 April, returning to Australia having finished its 12-month tour.
Prelude
Despite their losses during the previous fighting, the North Vietnamese and Viet Cong appeared to have gained the initiative. Indeed, although the Tet offensive had devastated the Viet Cong, costing them about half their strength in the south, the Defense Minister of the Democratic Republic of Vietnam—GeneralGeneral
A general officer is an officer of high military rank, usually in the army, and in some nations, the air force. The term is widely used by many nations of the world, and when a country uses a different term, there is an equivalent title given....
Vo Nguyen Giap
Vo Nguyen Giap
Võ Nguyên Giáp is a retired Vietnamese officer in the Vietnam People’s Army and a politician. He was a principal commander in two wars: the First Indochina War and the Vietnam War...
—had moved quickly to replace these losses with reinforcements, and by early May 15,000 North Vietnamese soldiers were serving in Viet Cong units in South Vietnam. On 8 April, Westmoreland launched a series of large-scale sweeps involving over 70,000 South Vietnamese, American, Australian, New Zealand and Thai troops, code-named Operation Toan Thang I
Operation Toan Thang I
Operation Toan Thang I was a US and ARVN operation conducted between 8 April 1968 and 31 May 1968 in the Vietnam war. Toan Thang, or "Complete Victory", was part of a reaction to the Tet offensive by forces allied with the Republic of Vietnam designed to put pressure on PLAF and PAVN ...
. Meanwhile, on 5 May the Viet Cong launched attacks against 119 provincial and district capitals, military installations and major cities during the May Offensive
May Offensive
During the early morning hours of 5 May, communist units initiated PHASE II of the Tet Offensive of 1968 by striking 119 targets throughout South Vietnam, including Saigon. This time, however, allied intelligence was better prepared, stripping away the element of surprise...
in an attempt to gain an advantage at the first session of peace negotiations
Paris Peace Accords
The Paris Peace Accords of 1973 intended to establish peace in Vietnam and an end to the Vietnam War, ended direct U.S. military involvement, and temporarily stopped the fighting between North and South Vietnam...
scheduled to begin in Paris on the 13th. Saigon was successfully infiltrated in an event that received widespread international media coverage and resulted in considerable embarrassment for the Americans and their allies, with as many as five of the 13 attacking Viet Cong battalions penetrating the city's outer defences, plunging the capital into chaos and resulting in heavy civilian casualties. After three days of intense fighting American and South Vietnamese forces successfully repelled the assault while, as the peace talks neared, a fresh wave of attacks was launched on Saigon several days later. However by 12 May the fighting was over, and the communists were forced to withdraw having suffered more than 5,500 dead in just over one week of fighting. US casualties were also heavy, amounting to 652 killed and 2,225 wounded, which made it the most costly week of the war for the Americans.
The Australians were initially employed on operations inside Phuoc Tuy province during Operation Toan Thang I. Viet Cong activity in their traditional base areas in the Hat Dich
Hat Dich
Hat Dich was an area within South Vietnam. It covered the area where the borders of Phước Tuy, Long Khánh and Biên Hòa Provinces met.During the Vietnam War, the area was the headquarters for the VC 274th Regiment, and was known as the Hat Dich secret zone and Base Area 301....
north of Nui Thi Vai hills, had been increasing in February and March and 3 RAR subsequently commenced operations along the north-western border of Phuoc Tuy province on 21 April. These operations resulted in little contact. In light of this, the Commander Australian Forces Vietnam—Major General
Major General (Australia)
Major General is a senior rank of the Australian Army, and was created as a direct equivalent of the British military rank of Major General. It is the third-highest active rank of the Australian Army, and is considered to be equivalent to a two-star rank...
Arthur MacDonald
Arthur MacDonald
General Sir Arthur Leslie MacDonald KBE, CB was a senior officer in the Australian Army, who served in the positions of Chief of the General Staff from 1975 to 1977, then Chief of the Defence Force Staff from 1977 to 1979; the professional head of the Australian Army and Australian Defence Force...
—believed that the task force would be better employed against North Vietnamese conventional forces, rather than in local pacification operations; later, following a request from Weyand, 1 ATF would again redeploy outside the province. As such, in an operation similar to those three months earlier at Bien Hoa, it was planned that 1 ATF would be used to help block infiltration towards Saigon. Overall responsibility for the defence of the capital was assigned to US IIFFV, and included the US 1st, 9th and 25th Divisions, as well as US 199th Light Infantry Brigade, 1 ATF, and a number of South Vietnamese units. The main deployment began on 25 April in response to intelligence reports of another impending offensive, with 1 ATF headquarters established at the American base at Bearcat
Long Thanh Town
Long Thanh Town is a town and township in Long Thanh District, Dong Nai Province, southern Vietnam, 70 km northwest of Vung Tau, 20 km southwest of Bien Hoa...
, while 2 RAR and 3 RAR deployed to the Bien Hoa
Bien Hoa
Biên Hòa is a city in Dong Nai province, Vietnam, about east of Ho Chi Minh City , to which Bien Hoa is linked by Vietnam Highway 1.- Demographics :In 1989 the estimated population was over 300,000. In 2005, the population wss 541,495...
-Long Khanh
Long Khanh
Long Khanh is a district of Đồng Nai Province in the Southeast region of Vietnam.As of 2003 the district had a population of 137,444. The district covers an area of 194 km². The district capital lies at Long Khánh....
border to block likely infiltration routes east of the large American base complex at Long Binh
Long Binh
Long Binh is a ward, in District 9 of Ho Chi Minh City, Vietnam.-Long Binh Post:During the Vietnam War, Long Binh Post was located near Bien Hoa, Dong Nai province. Vietnam, 33km from Saigon . The base functioned as a U.S. Army base, logistics center, and major command headquarters for United...
, which included the airbase at Bien Hoa and the large Long Binh Logistics Depot. Meanwhile, the task force base at Nui Dat was defended by one infantry battalion, a squadron of tanks and the remainder of the cavalry. The SAS squadron also remained in Phuoc Tuy during this period, continuing reconnaissance and surveillance operations in the province.
2 RAR was tasked with patrolling and ambushing tracks and likely rocket-launching sites to disrupt the expected attack against Saigon. The battalion established FSB Hunt, and conducted a number of small but successful ambushes. Meanwhile 3 RAR established FSB Evans and conducted search-and-ambush operations before returning to Nui Dat on 3 May after being replaced by 1 RAR, which then joined 2 RAR for a sweep. In response to the attacks on Saigon, elements of 1 ATF redeployed on 5 May, relieving the US 199th Light Infantry Brigade in an area of operations (AO) known as AO Columbus so that it could be released for operations elsewhere, with companies from both battalions deploying to ambush suspected infiltration routes in the expectation of an attack by 274 VC Regiment
VC 274th Regiment
The VC 274th Regiment, also known as the 274 Viet Cong Main Force Regiment, was a regiment of the Viet Cong during the Vietnam War. The regiment was part of the VC Division 5 and operated in the Bien Hoa, Đồng Nai, Phước Tuy and Long Khánh provinces.The Regiment consisted of a headquarters and...
from the Viet Cong 5th Division
VC 5th Division
The 5th Infantry Division, was a division of the Viet Cong during the Vietnam War. The division consisted of the 274 Regiment and 275 Regiment plus supporting units. North Vietnamese regulars also reinforced the division during operations...
. Five days later 2 RAR was relieved by 3 RAR, having completed its last major operation before returning to Australia. The Australians waited for the Viet Cong to make their move, but they again proved elusive and contact was only light, and by 10 May just six had been killed and one wounded after 21 days of operations. Having missed the Viet Cong and North Vietnamese units as they infiltrated the capital, it was planned that the Australians would be again redeployed on 12 May in order to obstruct the withdrawal of these forces following their defeat in Saigon. The task force would subsequently concentrate astride Route 16 on one of the major north-south supply routes 40 kilometres (24.9 mi) north-east of Saigon, just east of Lai Khe
Lai Khe
Lai Khê is a small settlement in Vietnam, to the northwest of Ho Chi Minh City and about 20 km north of Thủ Dầu Một. During the Vietnam War it was a garrison town as the 5th Division of the Army of the Republic of Vietnam was based there for most of the 1960s and 1970s.Tucker, pp. 526–533...
in Binh Duong province, in a new area of operations, AO Surfers. Meanwhile, US forces would operate on the flanks.
1 ATF would move with its headquarters and two infantry battalions—1 RAR and 3 RAR—as well as cavalry, artillery, engineer and aviation elements operating in support, including M113 armoured personnel carriers from A Squadron, 3rd Cavalry Regiment, 105 mm M2A2 howitzers from 12th Field Regiment, Royal Australian Artillery, Bell H-13 Sioux light observation helicopters from 161 Reconnaissance Flight
161st Independent Reconnaissance Flight (Australia)
The 161st Independent Reconnaissance Flight was an Australian Army aviation unit. Formed in 1965 during the Vietnam War, in September that year the flight deployed to South Vietnam with two Cessna 180s and two Sioux light obersvation helicopters in order to support the 1st Battalion, Royal...
and mortar locating radars from 131st Divisional Locating Battery
20th Surveillance and Target Acquisition Regiment, Royal Australian Artillery
The 20th Surveillance and Target Acquisition Regiment, Royal Australian Artillery is an Australian Army Regiment which was raised in 2006. The Regiment is responsible for providing the Australian Army with artillery spotting and tactical reconnaissance...
. The concept of operations
Concept of Operations
A concept of operations is a document describing the characteristics of a proposed system from the viewpoint of an individual who will use that system. It is used to communicate the quantitative and qualitative system characteristics to all stakeholders...
called for the establishment battalion AOs, named Bondi, Manly and Newport. 1 RAR was allocated to AO Bondi with artillery support from 102 Field Battery established at a fire support base, named FSB Coral. 3 RAR was initially allocated to AO Manly, west of Bondi, and would also be supported from FSB Coral by its own supporting battery, 161 Battery, Royal New Zealand Artillery
Royal Regiment of New Zealand Artillery
The Royal New Zealand Artillery forms the artillery section of the New Zealand Army. In its current form it was founded in 1947 with the amalgamation of the regular and volunteer units of artillery in New Zealand.-Modern structure:...
. The operation would be conducted in three phases. 3 RAR—under the command of Lieutenant Colonel Jim Shelton—would conduct an air assault into Coral early on 12 May, with the lead elements securing the landing zone for the fly-in of the remainder of the battalion, and 1 RAR under Lieutenant Colonel Phillip Bennett
Phillip Bennett
General Sir Phillip Harvey Bennett AC, KBE, DSO is a retired senior officer of the Australian Army who served as Chief of the Australian Defence Force from 1984 to 1987, and later as Governor of Tasmania from 1987 to 1995....
. Leaving its supporting artillery and one infantry company for protection, 3 RAR would then move west to establish blocking positions and patrol AO Manly in order to intercept North Vietnamese and Viet Cong forces attempting to withdraw from the south and south-west. Meanwhile, 1 RAR would establish its supporting artillery and mortars at FSB Coral, and then with one company, clear Route 16 to the village of Tan Uyen
Tan Uyen
Tan Uyen , is a district of Binh Duong Province in the Southeast region of Vietnam.As of 2003 the district had a population of 131,232. The district covers an area of 601 km². The district capital lies at Uyen Hung.-References:...
, 7 kilometres (4.3 mi) to the south. The battalion would then occupy blocking positions and patrol AO Bondi. 1 ATF headquarters would then move from Bearcat to FSB Coral on 13 May, while the forward task force maintenance area would move from Bearcat by road convoy and be operational by 14 May.
Vietnam People's Army
The Vietnam People's Army is the armed forces of Vietnam. The VPA includes: the Vietnamese People's Ground Forces , the Vietnam People's Navy , the Vietnam People's Air Force, and the Vietnam Marine Police.During the French Indochina War , the VPA was often referred to as the Việt...
(PAVN) units had been identified in AO Surfers, including the regular North Vietnamese 7th Division—consisting of 141 and 165 NVA Regiments under the command of Nguyen the Bon, the Vietcong 5th Division—consisting of 274 and 275 VC Regiments, and the Dong Nai Regiment. These divisions were believed to have participated in the assault on Saigon and allied intelligence considered it likely they would attempt to withdraw through the Australian area of operations in order to regroup. Other forces included 85 NVA Regiment as well as 165, 233, 269, 275, D280 and 745 VC Infiltration Groups and various Viet Cong units used for reconnaissance, guiding, logistics, liaison and other tasks. In total, an estimated strength of 3,000 to 4,000 men. Regardless, despite earlier warnings that they may concentrate up to regiment
Regiment
A regiment is a major tactical military unit, composed of variable numbers of batteries, squadrons or battalions, commanded by a colonel or lieutenant colonel...
al-strength, a breakdown in the passage of intelligence led the Australians to believe that the North Vietnamese and Viet Cong would remain dispersed in small groups in an attempt to avoid detection. As such the Australians assumed that the communist forces would pose little threat and envisioned patrolling from company harbours to find and ambush them as they withdrew. Meanwhile, due to the risk of heavy ground fire, only a very limited aerial reconnaissance of the new area of operations was undertaken and this later had significant implications.
Occupation of FSB Coral, 12 May 1968
On the night of 11/12 May, only a few hours before the Australian redeployment was scheduled to commence, American forces from US 1st Division operating in AO Surfers were attacked just west of the proposed landing zone (LZ). Continuing through the night and into the following morning, the fighting prevented the Americans from leaving the area and led to initial delays in occupying FSB Coral. Further delays arose after the terrain around the proposed LZ was found to be unsuitable for helicopters, and Shelton was forced to designate a new location 1000 metres (1,093.6 yd) to the south-west for his battalion. Meanwhile, the American company providing security for the lead Australian elements had to redeploy to secure the alternate LZ. Communications were problematic throughout the operation and this further compounded the delays. The first infantry company to fly in—B Company, 3 RAR under the command of Major Bert Irwin—was already airborne and Shelton directed them to the new LZ. On landing, Irwin moved quickly to the original position, and despite rapidly clearing it, the insertion was further delayed.1 ATF was not well practised in flying in and setting up a large fire support base, and a poorly co-ordinated, prolonged and dislocated operation caused considerable delay in getting on the ground, and the scattering of a number of units. Confusion continued to affect the operation, with 161 Battery, RNZA arriving by CH-47 Chinook
CH-47 Chinook
The Boeing CH-47 Chinook is an American twin-engine, tandem rotor heavy-lift helicopter. Its top speed of 170 knots is faster than contemporary utility and attack helicopters of the 1960s...
before FSB Coral was ready, and being forced to land in an improvised LZ in a clearing 1000 metres (1,093.6 yd) to the south-west. Meanwhile, the continued presence of American forces in AO Manly also prevented 3 RAR from deploying as planned, and as the battalion began landing it was forced to remain on the western side of the FSB. 102 Field Battery, the direct support battery for 1 RAR, was subsequently landed at FSB Coral and Major Brian Murtagh, second-in-command of 12th Field Regiment and the artillery tactical headquarters, was subsequently designated as the FSB commander, even though his guns were now physically dislocated from each other.
These delays in turn affected the fly-in of 1 RAR, with the companies forced to wait at the departure point in AO Colombus before they commenced the air move to FSB Coral. Hughes visited Bennett at FSB Coral at 15:30 to discuss aspects of the defence, as well as events planned for the following day. The deployment of the second battalion was not complete until 16:10, with the 1 RAR Mortar Platoon arriving on the last flight, more than four hours late. It became clear to Bennett that 1 RAR would need to deploy to the east of the FSB, and with just two hours before last light the companies were moved into hasty defensive positions, the last of which were not established until 17:00. Due to the hurried deployment, by dusk the two battalions of 1 ATF and their supporting elements were scattered around FSB Coral in four roughly connected groups, rather than in a co-ordinated defensive area. The task force headquarters advance party and part of its Defence Platoon were located centrally, yet the task force tactical headquarters and the artillery tactical headquarters under Lieutenant Colonel Jack Kelly—Commanding Officer of 12th Field Regiment—both remained in Bearcat. Hughes was not present either, having left Bearcat to attend to matters at the task force rear headquarters at Nui Dat, and was due to move forward with the tactical headquarters to FSB Coral the following day.
There had been little opportunity for co-ordination, with the Australian infantry strung out along the routes away from FSB Coral in preparation for their move the next day. 3 RAR was responsible for the security of FSB Coral, with D Company defending the north-west approaches, while the remaining three companies were dispersed over 3 kilometres (1.9 mi) to the west, spread between the FSB and the New Zealand gun positions to the south-west. 1 RAR occupied the eastern approaches, with its rifle companies dispersed over 5 kilometres (3.1 mi) harbouring in night ambush positions, while C Company was isolated to the south-east picketing the road to Tan Uyen in order to provide security for the convoy due to arrive from Bearcat the following day. Bennett kept his anti-tank and assault pioneer platoons inside the FSB to protect the battalion command post, while the mortar platoon would be particularly exposed, being located adjacent to the 102 Field Battery gun position in an open area on the outer edge of the base facing to the north and east. The rifle companies to the north-east provided the only protection, yet there were large gaps between these positions and they could be easily bypassed. Although the Australians made further efforts to co-ordinate their defences prior to last light, attempting to tie in their positions to achieve mutual support between the sub-units, these arrangements remained incomplete as night fell.
Command posts were dug in and weapons pits and shell scrape
Shell scrape
A Shell scrape is a type of military earthwork long and deep enough to lie flat in. While similar to a Defensive fighting position in that the purpose is to shield a single soldier from artillery, mortar and direct small arms fire, it is not intended to be used for fighting from.Shell scrapes are...
s were commenced, however many were not completed to any depth due to a lack of time, while a heavy rainfall started at 18:00 and soon filled the pits with water anyway. No claymore mines or barbed wire were laid out either, as the wire had not yet arrived, while lack of materials also prevented the construction of overhead protection. 7.62 mm M60 machine-guns
M60 machine gun
The M60 is a family of American general-purpose machine guns firing 7.62×51mm NATO cartridges from a disintegrating belt of M13 links...
were placed out around the perimeter, however there was no time to test fire them or to properly tie in their arcs of fire. Meanwhile, 90 mm M67 recoilless rifle
M67 recoilless rifle
The M67 recoilless rifle was a 90-mm antitank recoilless rifle made in the United States and later in the Republic of Korea. It could also be employed in an antipersonnel role with the use of the M590 antipersonnel round...
s (RCLs) from the 1 RAR Anti-Tank Platoon armed with High Explosive Anti-tank (HEAT) and anti-personnel flechette
Flechette
A flechette is a pointed steel projectile, with a vaned tail for stable flight. The name comes from French , "little arrow" or "dart", and sometimes retains the acute accent in English: fléchette.-Bulk and artillery use:...
ammunition were sited to support the forward machine-guns. Due to their previous experiences fighting the Viet Cong in Phuoc Tuy province, the Australians were not overly alarmed despite the defences at FSB Coral suffering due to the hasty deployment and, although the recent fighting involving the US 1st Division only 3 kilometres (1.9 mi) to the west may have been additional cause for concern, its extent was unknown to the Australians at the time.Later it became known that forces identified during this fighting included part of 141 NVA Regiment and resulted in North Vietnamese casualties of 36 killed and three captured. See . Expecting the North Vietnamese to be operating in small groups while trying to avoid battle as they had done during the last three weeks, there was little thought of a major threat to the FSB. Commencing night routine, sentries were posted while the rest of the Australians stood down to get some sleep.
First attack on FSB Coral, 12/13 May 1968
Unknown to 1 ATF, the headquarters of the North Vietnamese 7th Division was located approximately 9 kilometres (5.6 mi) to the east of FSB Coral and several units of the division were also based in the vicinity. 165 NVA Regiment was operating to the north and 141 NVA Regiment to the east, while the battalion-strength 275 Infiltration Group had only recently arrived, having left the Ho Chi Minh TrailHo Chi Minh trail
The Ho Chi Minh trail was a logistical system that ran from the Democratic Republic of Vietnam to the Republic of Vietnam through the neighboring kingdoms of Laos and Cambodia...
on the Cambodian border just 48 hours earlier. The North Vietnamese divisional commander had quickly dispatched reconnaissance elements to observe the fly-in of the Australians and their defensive preparations during the afternoon, and they soon reported the opportunity to attack the exposed gun positions of 102 Field Battery. One battalion of 141 NVA Regiment, augmented by 275 and 269 Infiltration Groups, was subsequently tasked to attack FSB Coral that night. This reconnaissance had not gone unnoticed by the Australian infantry, however, and companies from both 1 RAR and 3 RAR had fleeting contacts with small groups of North Vietnamese at last light and into the evening.
D Company, 1 RAR—under Major Tony Hammett—contacted a ten-man group of North Vietnamese while moving into ambush positions 2500 metres (2,734 yd) north of FSB Coral late in the afternoon. In a brief exchange the North Vietnamese broke contact after losing one killed, firing rocket-propelled grenades into the trees above the Australians and wounding one of them. During the evening B Company, 1 RAR—under the command of Major Bob Hennessy—had a further contact to the east with another ten-man group. Later, Major Colin Adamson's A Company detected 20 North Vietnamese moving on the perimeter utilising newly issued Starlight scopes and subsequently killed and wounded some of them. However, such events appeared to be chance encounters and caused the Australians no particular concern. By midnight the rain had stopped, and five minutes later the 1 RAR mortar position was probed and a fire-fight ensued, resulting in possibly three North Vietnamese being killed. Later it became apparent that they had been marking assault lanes, while at 02:25 three North Vietnamese from a forward reconnaissance party walked into a D Company, 1 RAR ambush and in the ensuing contact one was killed before they again broke contact, firing rocket-propelled grenades that killed one Australian and wounded 11 from a single platoon
Platoon
A platoon is a military unit typically composed of two to four sections or squads and containing 16 to 50 soldiers. Platoons are organized into a company, which typically consists of three, four or five platoons. A platoon is typically the smallest military unit led by a commissioned officer—the...
. Yet despite a number of minor clashes the North Vietnamese successfully bypassed the Australian rifle companies, conducting a forced march under cover of darkness and rain to dig in within 250 metres (273.4 yd) of FSB Coral undetected.
Finally at 03:30, rocket and mortar fire began falling on FSB Coral, concentrating on 102 Field Battery and the 1 RAR Mortar Platoon positions in an intense bombardment lasting five minutes. Following a ten-minute pause a number of flares signalled the start of the assault. Intending to capture the field guns, two North Vietnamese companies rushed the Australians from the north-east firing their AK-47 assault rifles, with the 1 RAR Mortar Platoon taking the brunt of the initial attack, while the 1 ATF Defence Platoon was also pinned down by heavy machine-gun fire. The New Zealand howitzers and 3 RAR mortars began firing in support, however they failed to halt the North Vietnamese and the initial assault succeeded in over-running the 1 RAR mortars, killing five and wounding eight. The flank of the main assault force then ran through the position at speed before moving on towards the gun position. During their earlier reconnaissance, the North Vietnamese had likely observed the guns to be laid facing east and had probably planned to assault from the north as a result, yet shortly before the main attack the battery had fired a mission to the north and the guns were now directly facing their axis of assault. Moving in long straight lines across a frontage of 150 to 200 men, the main North Vietnamese assault moved against the gun position as the Australian gunners opened fire over open sights with Splintex rounds at point blank range, with thousands of darts ripping through their ranks and breaking up successive waves into small groups. Amid the confusion, follow-up sections hesitated upon reaching the mortar position, while other groups skirmished around the flanks and between the artillery and mortars.
Meanwhile, the 1 RAR Anti-Tank Platoon—commanded by Lieutenant Les Tranter—also engaged with Splintex from their 90 mm RCLs, firing across the front of the mortars and relieving the immediate pressure on them. However, with the North Vietnamese having successfully achieved a break-in, and faced with the possibility of imminent annihilation, the 1 RAR Mortar Platoon second-in-command—Lieutenant Tony Jensen—was forced to direct the RCLs onto his own position, to which Bennett agreed. As the North Vietnamese attempted to turn the captured mortars against the Australians, the flechette darts swept the area, clearing everything above ground, causing heavy casualties among the assaulting force and damaging a number of mortar tubes. Elsewhere, the North Vietnamese assault had reached the Australian gun position, over-running two guns as desperate close quarters fighting broke out between the emplacements. The attackers subsequently succeeded in capturing No. 6 gun on the extreme edge of the gun-line and then attempted to destroy it with satchel charge
Satchel charge
thumb|right|250px|Weapons used in [[Winter War]]. The original Finnish satchel charge at left.A satchel charge is a demolition device, primarily intended for combat, whose primary components are a charge of dynamite or a more potent explosive such as C-4 plastic explosive, a carrying device...
s. In both the mortar and artillery positions the North Vietnamese and Australians occupied adjacent pits, fighting each other at close range for their possession. The gun position officer—Captain Ian Ahearn—co-ordinated the defence, and the Australians finally drove off the assault with grenades and small arms, as well as Splintex rounds fired from the Anti-Tank Platoon. Meanwhile, with the assault falling mainly on 1 RAR and 102 Field Battery, to the west 3 RAR had largely remained out of contact.
Although the North Vietnamese troops were well-trained and equipped they were ultimately unable to prevail against the superior fire power of the Australian infantry and gunners, which had turned the battle in their favour. Throughout the night, fire support was co-ordinated by the 1 RAR command post and the fire support co-ordinating centre, which controlled integral fires from 102 Field Battery, its direct support battery, as well as from 161 Battery RNZA and the 81 mm mortars from 3 RAR. Yet the Australian gunners soon ran out of Splintex rounds, and they were forced to use standard high-explosive with their direct-action fuses set to 'delay'. The guns were then depressed to fire the shell at the ground approximately 40 to 50 m (43.7 to 54.7 yd) in front of the emplacement, which caused the round to ricochet and explode in the air above the heads of the assaulting force, an expedient which proved very effective. The Australians were also supported by artillery from a number of neighbouring American batteries that were in range, as well as by aerial strafing from helicopter gunships and continuous illumination by flares. Forward observers adjusted the artillery to within 20 metres (21.9 yd) of the Australian position, while C-47 Spooky gunships armed with mini-guns fired thousands of rounds into the assaulting forces.
After an hour of intense fighting, by 04:30 the main attack began to falter and the North Vietnamese subsequently withdrew into a rubber plantation to the north-east, carrying many of their dead and wounded. However, in an attempt prevent the Australians from following them a company-sized force remained, and the Australian gunners attempted to engage them with their remaining Splintex rounds and high explosive. Taking advantage of the extinguishing of a fire that the Australians had been using to direct the helicopter gunships, the North Vietnamese again attacked at 05:00 in an effort to further cover their withdrawal. Greatly reduced in strength, however, the attack was quickly broken up in a crossfire of high explosive and Splintex. A series of sporadic contacts then took place between the Australians and withdrawing North Vietnamese parties, while at 05:30 a helicopter light-fire team became effective and forced the North Vietnamese rearguard to abandon its positions. Also during this time, rockets and mortars had landed on B Company, 1 RAR 1500 metres (1,640.4 yd) to the south-east, killing one Australian and wounding another. At 05:45, 161 Battery RNZA began firing on likely withdrawal routes as the pre-dawn light began to appear. The Australians then began a sweep of their position, with 102 Field Battery clearing the gun position while Bennett accompanied the 1 RAR Anti-Tank Platoon and a regimental medical officer's party to clear the rest of the perimeter. A number of North Vietnamese soldiers were subsequently located, with the last killed in the gun position at 06:10. The two patrols then met in the mortar position while a patrol from 3 RAR carried out a similar sweep from north to south, and FSB Coral was finally cleared by 06:25. By 06:30 the evacuation of the Australian dead and wounded began by helicopter. The communists finally completed their withdrawal by 08:00.
The fighting had been costly for both sides. Australian casualties included nine killed and 28 wounded, while one howitzer and two mortars had been damaged.The bulk of the Australian casualties had been suffered by the 1 RAR Mortar Platoon. Those men not killed or wounded suffered battle shock and they were subsequently withdrawn to Nui Dat and temporarily replaced by men from 3 RAR until reinforcements could be obtained. See . North Vietnamese casualties included 52 dead, who lay strewn around the perimeter, while 23 small arms and seven crew-served weapons had also been captured by the Australians. While Radio Hanoi
Radio Hanoi
Radio Hanoi was a propaganda radio station run by the North Vietnamese Army during the Vietnam War.In September 1967, Radio Hanoi transmitted a message by General Võ Nguyên Giáp entitled "The Big Victory, The Great Task". Unbenknownst to Americans listening to the message, it was actually an...
quickly announced a major North Vietnamese victory there was little doubt that the Australians had convincingly repulsed the attack, even if they had come close to suffering a military and political catastrophe, with the task force headquarters itself nearly being destroyed. The initial delays during the fly-in had left the defenders spread haphazardly and, had the North Vietnamese assaulted without the preparatory fire that ultimately alerted the Australians, the result may have been different. Equally the fortunes of war had resulted in the Australian guns being laid in the direction of the main North Vietnamese assault, and the firepower they afforded had probably been decisive. The occupation of FSB Coral was one of the first such operations conducted by 1 ATF and many of the deficiencies evident had been due to this inexperience. Command and control had been insufficient and in hindsight the lack of co-ordination in setting up the defence could have been avoided with the appointment of a local defence commander. The absence of proper aerial reconnaissance prior to insertion had also resulted in units and their supporting elements landing on unsuitable ground in full view of the North Vietnamese, while the delay in the insertion of the second battalion denied them enough time to establish their positions before night fell. Failures in the assessment and timely distribution of intelligence were also identified.
1 ATF consolidates in AO Surfers, 13−15 May 1968
The 1 ATF forward tactical headquarters arrived from Bearcat by Chinook on 13 May, while additional personnel and stocks were brought in by road convoy to establish the forward task force maintenance area. Hughes arrived at 08:00 and directed Bennett to redeploy his companies in all-round defence of FSB Coral, with 1 RAR consolidating their defensive arrangements with wire, sandbags, overhead protection and claymore mines, while tripod-mounted machine-guns were also emplaced to fire on fixed lines. Meanwhile, 3 RAR established FSB Coogee in AO Manly 4000 metres (4,374.5 yd) west, with C Company securing the fire support base while the other three rifle companies conducted search operations which resulted in one being Australian killed. 161 Battery RNZA was then redeployed by air to Coogee. M-113M113 armored personnel carrier
The M113 is a fully tracked armored personnel carrier that has formed the backbone of the United States Army's mechanized infantry units from the time of its first fielding in Vietnam in April 1962. The M113 was the most widely used armored vehicle of the U.S...
armoured personnel carriers from A Squadron, 3CAV (less one troop
Troop
A troop is a military unit, originally a small force of cavalry, subordinate to a squadron and headed by the troop leader. In many armies a troop is the equivalent unit to the infantry section or platoon...
)—under the command of Major John Keldie—arrived at Coral the same day, after escorting the rear echelons and 155 mm M109 self-propelled artillery
M109 howitzer
The M109 is an American-made self-propelled 155 mm howitzer, first introduced in the early 1960s. It was upgraded a number of times to today's M109A6 Paladin...
from A Battery, US 2/35th Artillery Regiment
35th Field Artillery Regiment (United States)
The 35th Field Artillery Regiment is an Field Artillery regiment of the United States Army.-Distinctive Unit Insignia:*DescriptionA gold color metal and enamel device 1 1/8 inches in height overall consisting of the shield and crest of the coat of arms.*SymbolismThe shield is red with a diagonal...
. The APCs were then split between the fire support bases, with 1 Troop assigned to 1 RAR and 2 Troop to 3 RAR, with Keldie appointed as local defence commander at FSB Coral in order to co-ordinate the actions of units on the perimeter. 1 Field Squadron
Royal Australian Engineers
The Royal Australian Engineers is a corps of the Australian Army . The RAE is ranked fourth in seniority of the corps of the Australian Army, behind the Staff Cadets, Armoured and Artillery Corps...
also provided engineer teams to each combat arm, while other elements prepared command post bunkers and fortifications within the fire support bases.
The unsuccessful assault against FSB Coral on the night of 12/13 May had demonstrated that the North Vietnamese would react violently to Australian attempts to control AO Surfers, and with 1 ATF deployed astride a key route to Saigon and threatening a number of communist bases and staging areas located nearby, further heavy fighting was expected over the following days. In response, the Australians were forced to refine their tactics and Hughes decided to establish strong defensive positions in order to destroy the North Vietnamese by fire, rather than by the painstaking patrolling more familiar to the Australians. The FSBs would be heavily defended by night, while the battalions would conduct defensive patrols by day. Later, fighting patrols up to company-size with armoured support would then be used to locate and destroy the Viet Cong main force bases. As such the Australian concept of operations subsequently evolved from one of searching and clearing in order to locate and cut infiltration and withdrawal routes, into a series of reconnaissance-in-force operations from heavily defended bases. Meanwhile, in AO Manly, 3 RAR continued patrolling for the next seven days, successfully ambushing staging areas and infiltration routes between 13−19 May for the loss of one soldier killed.
On 14 May there were a number of patrol clashes in AO Bondi, as both sides tried to determine the intentions of the other. The Australians sent out platoon-sized defensive patrols between 3 to 4 km (1.9 to 2.5 mi) from Coral and in nine contacts they suffered three killed and five wounded, while North Vietnamese casualties included 12 killed and two wounded. Later two more Australians were wounded by a rocket-propelled grenade fired into FSB Coral. During the afternoon the patrol activity resulted in heavy fighting, and two separate actions fought within half an hour of each other by different platoons from 1 RAR led to two Australians being awarded the Distinguished Conduct Medal
Distinguished Conduct Medal
The Distinguished Conduct Medal was an extremely high level award for bravery. It was a second level military decoration awarded to other ranks of the British Army and formerly also to non-commissioned personnel of other Commonwealth countries.The medal was instituted in 1854, during the Crimean...
(DCM)—Lance Corporal David Griffiths and Private Richard Norden. The communists appeared to be probing the Australians to gain information on the their dispositions and these efforts continued the following day with the defenders observing two North Vietnamese near the perimeter of FSB Coral, while patrols from 1 RAR later contacted a number of small groups and uncovered a recently used company-sized camp just 1000 metres (1,093.6 yd) from the base. By 15 May the Australians considered their defences to be properly co-ordinated, while nearby 141 NVA Regiment was again preparing to attack Coral after evading the intensive patrolling. Yet that night a large number lights and flares were observed by the defenders, effectively warning them of the impending assault.
Second attack on FSB Coral, 16 May 1968
At 02:30 on 16 May the North Vietnamese began a heavy barrage of rocket-propelled grenades and mortar fire, concentrating on A Company 1 RAR, 1 ATF headquarters, and the forward task force maintenance area. Now heavily reinforced, however, the Australian and American artillery and mortars quickly responded with heavy counter-battery fireCounter-battery fire
Counter-battery fire is a type of mission assigned to military artillery forces, which are given the task of locating and firing upon enemy artillery.-Background:...
, with a total of 60 guns from three batteries of 105 mm field guns, one battery of 155 mm howitzers, one 8 inches (203.2 mm) battery and nine 81 mm mortars firing in support, augmented by air support from three heavy fire teams (each of three Iroquois helicopter gunships) and three fighters
Fighter aircraft
A fighter aircraft is a military aircraft designed primarily for air-to-air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets...
with bombs and napalm
Napalm
Napalm is a thickening/gelling agent generally mixed with gasoline or a similar fuel for use in an incendiary device, primarily as an anti-personnel weapon...
. Regardless, at 02:40 the North Vietnamese launched a battalion-sized attack, which initially fell on A and B Companies. Even with the artillery and mortars concentrating on close defensive fire tasks, the assault was largely held at the perimeter, although they did succeed in over-running part of 3 Platoon, A Company. Commanded by Lieutenant Neil Weekes, the platoon had been hit heavily by indirect fire during the initial bombardment and had suffered several casualties. Concentrating on the gap created in the Australian perimeter, the North Vietnamese then assaulted with the support of 12.7 mm DShK
DShK
The DShK 1938 is a Soviet heavy machine gun firing the 12.7x108mm cartridge. The weapon was also used as a heavy infantry machine gun, in which case it was frequently deployed with a two-wheeled mounting and a single-sheet armour-plate shield...
heavy machine-guns. Ordering his men to fix bayonets, Weekes successfully reorganised the defences however, and called in close mortar fire to stabilise the position, resulting in heavy casualties among the assaulting force. He was later awarded the Military Cross
Military Cross
The Military Cross is the third-level military decoration awarded to officers and other ranks of the British Armed Forces; and formerly also to officers of other Commonwealth countries....
for his leadership. Unable to achieve a break-in, the North Vietnamese then broadened their attack to include C Company, engaging three of the four Australian companies on the perimeter. However, after successfully opening a number of gaps in the wire, they failed to press home their attack.
By 04:00 A Company was still heavily engaged and the Australians called in helicopter light-fire teams and C-47 Spooky gunships, which dropped flares continuously from 04:30 to illuminate the battlefield. By 05:00 the main attack was halted and the North Vietnamese began withdrawing, just as the Australians were beginning to run low on ammunition. During the lull A Company was resupplied by APC, while the Australians pushed an RCL team forward to provide additional support. At 05:15 the North Vietnamese attacked again, targeting the boundary between A and C Companies on the northern edge of the perimeter, only to be repulsed by mortar fire. Later a two-battalion attack on A, B and C Companies was also turned back. The Australians then counter-attacked with elements of A Company supported by APCs, regaining the lost 3 Platoon section post. Finally, after a six-hour battle the North Vietnamese broke contact at 06:30 and withdrew with their dead and wounded, fighting a series of rearguard actions to prevent follow-up. The Australians also began collecting their casualties for evacuation, while another resupply was completed with APCs. 1 RAR subsequently commenced a clearance of the area, with the four Australian rifle companies patrolling to a depth of 1000 metres (1,093.6 yd), killing one North Vietnamese soldier and capturing another. Five Australians had been killed and 19 wounded, while two US artillerymen were also wounded during the fighting. Only 34 North Vietnamese bodies were counted on the perimeter at dawn, however intelligence later indicated that fewer than 100 of the 790 attacking troops had survived unwounded. Meanwhile, in an attempt to disrupt the North Vietnamese withdrawal, Keldie led a troop of cavalry from Coral, engaging a North Vietnamese battalion during a pursuit that lasted until 15:00.
On 17 May, Westmoreland visited FSB Coral and congratulated the task force on its defence. Both Australian battalions continued to patrol with minor contacts, and during one such incident at least six North Vietnamese were killed when a group of approximately 35 was engaged by artillery and armed helicopters after being observed by scouts from B Company, 3 RAR. During the week that followed Australian patrols clashed with groups of North Vietnamese moving through AO Surfers, many of them from 165 NVA Regiment, which was believed to be withdrawing into War Zone D after attacking Tan Son Nhut airbase
Tan Son Nhut Air Base
Tan Son Nhut Air Base was a Republic of Vietnam Air Force facility. It is located near the city of Saigon in southern Vietnam. The United States used it as a major base during the Vietnam War , stationing Army, Air Force, Navy, and Marine units there...
, near Saigon. A Company, 3 RAR subsequently occupied a blocking position on the Suoi Ba Pho creek, ambushing North Vietnamese moving northwards and directing mortar firing onto evasion routes, killing eight and capturing two. Elsewhere, C Company, 3 RAR located and destroyed a number of base camps in the vicinity of FSB Coogee. Meanwhile, with the approval of MacDonald, Hughes departed on a long-planned leave to Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
on 18 May, and Colonel
Colonel
Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...
Donald Dunstan
Donald Dunstan (Australian Governor)
Lieutenant General Sir Donald Beaumont Dunstan, AC, KBE, CB was an Australian Army officer who was Governor of South Australia from 23 April 1982 until 5 February 1991.-Military career:...
, the task force second-in-command, took over as Commander 1 ATF on 20 May. A respected and experienced leader, he quickly took control amidst growing tension.
At 01:00 on 22 May FSB Coral was again attacked, though not on the same scale as before, coming under a short but accurate mortar bombardment that was subsequently broken up artillery and mortar fire. In order to bolster his defences and provide an increased offensive capability, on 21 May Dunstan ordered the Centurion tanks
Centurion tank
The Centurion, introduced in 1945, was the primary British main battle tank of the post-World War II period. It was a successful tank design, with upgrades, for many decades...
from C Squadron, 1st Armoured Regiment to redeploy the 120 kilometres (74.6 mi) from Nui Dat. Under the command of Major Peter Badman, the slow-moving armoured column departed on 22 May, traversing the difficult terrain that included a number of old, rusting Bailey bridge
Bailey bridge
The Bailey bridge is a type of portable, pre-fabricated, truss bridge. It was developed by the British during World War II for military use and saw extensive use by both British and the American military engineering units....
s, which threatened to collapse under the 50-tonne weight of the Centurions. Moving via the inland route under cover provided by an observation aircraft from 161 Reconnaissance Flight, they drove north on Route 2, then west on Highway 1 to Long Binh where they staged overnight. Just north of Blackhorse the lead vehicle of the convoy hit a road mine, damaging a dozer tank but resulting in no casualties. They finally arrived at FSB Coral at 02:30 on 23 May. Four tanks from 1 Troop were subsequently allocated to 1 RAR, while 2 Troop was allocated to 3 RAR. Two American M42 40 mm Self-Propelled Anti-Aircraft Guns
M42 Duster
The M42 40 mm Self-Propelled Anti-Aircraft Gun, or "Duster," is an armored light air-defense gun built for the U.S. Army from 1952 until December 1959. Production of this vehicle was performed by the tank division of the General Motors Corporation. It used components from the M41 light tank...
had also accompanied the tanks and further strengthened the Australian FSBs in a ground support role.
First attack on FSB Balmoral, 26 May 1968
With 3 RAR achieving limited results in AO Manly, MacDonald suggested that Dunstan establish the battalion in a new location east of Route 16 in order to locate and destroy the North Vietnamese bases suspected to be in the area. 3 RAR subsequently occupied FSB Balmoral in AO Newport, 4.5 kilometres (2.8 mi) north of Coral, on 24 May in the hope of provoking another battle. Shelton was keen to avoid the mistakes that had been made during the earlier occupation of FSB Coral however, and he sent two companies forward on foot to occupy the new fire support base while the battalion tactical headquarters accompanied them in APCs. During the insertion there were a number of contacts between the Australians and North Vietnamese, with at least one North Vietnamese soldier being killed. Yet with B and D Companies securing the landing zone, the remainder of 3 RAR was inserted by helicopter from FSB Coogee in the late afternoon. FSB Balmoral would be developed as a battalion defensive position only, and 161 Battery RNZA was subsequently flown to FSB Coral, in order to concentrate all of the artillery in that location from where they would be able to cover the whole of the new AO. Meanwhile the North Vietnamese had been caught by surprise and, with no time prepare an attack, they were unable to respond on the first evening. Regardless, 3 RAR worked quickly to establish their defensive position, digging in and laying wire and claymore mines.On 25 May, 3 RAR began local defensive and familiarisation patrols. Four Centurion tanks from 2 Troop, C Squadron were ordered to redeploy to FSB Balmoral to bolster the defences, escorted by two infantry platoons from B Company, 1 RAR under Captain Bob Hennessy. En route, the North Vietnamese contacted the Australian infantry from a series of bunkers, pinning them down with machine-gun fire at close range. In response the Australian tanks moved forward, suppressing the bunkers with canister
Canister shot
Canister shot is a kind of anti-personnel ammunition used in cannons. It was similar to the naval grapeshot, but fired smaller and more numerous balls, which did not have to punch through the wooden hull of a ship...
rounds while the infantry was extracted. The Australians had struck the edge of a large, defended base camp estimated at company-size, however under orders to continue to Balmoral before nightfall, they broke contact. The column subsequently arrived at FSB Balmoral without further incident at 15:30 and B Company, 1 RAR then returned to FSB Coral by helicopter. At least two North Vietnamese were killed in the encounter, while one Australian was wounded. Although a relatively minor action, the tanks had been decisive and the engagement was early proof of their effectiveness in co-operation with the infantry. Meanwhile, the North Vietnamese commander was no longer able to tolerate the Australian encroachment into his base areas, and with FSB Balmoral located just 1500 metres (1,640.4 yd) away, he subsequently tasked 165 NVA Regiment—commanded by Phan Viet Dong—to attack Balmoral. That evening tracer rounds, shots and lights again alerted the defenders of an impending attack.
At 03:45 on 26 May the North Vietnamese began a heavy bombardment with mortar and rockets, accompanied by machine-gun and small-arms fire. Immediately following the barrage, Balmoral was subjected to a ground assault across the open ground from the north-east by a force of up to battalion strength, falling primarily on D Company, commanded by Major Peter Phillips. At the same time the North Vietnamese conducted a feint on the southern perimeter opposite A Company—under Major Horrie Howard—using Bangalore torpedoes to break through the wire, although the gap was not exploited.There are some inconsistencies regarding the dispositions of 1 RAR during both attacks on FSB Balmoral. Some sources indicate that A Company occupied the western perimeter and that the feint had been conducted against the southern end of their positions, while C Company occupied the southern perimeter itself, see and . Other sources place A Company on the southern perimeter with C Company to their west, see and . The dispositions adopted here are those from the official history. Two Centurions that had been sited directly on the main axis of assault but concealed during the day, rolled forward under the cover of darkness. Their machine-guns and canister rounds proved telling during the fighting; the main attack stalled as it reached the wire before being repelled with heavy casualties by the combined firepower of the Australian infantry and tanks. Meanwhile, as sporadic mortar, rocket-propelled grenade and small-arms fire continued, to the south FSB Coral was also hit with suppressing fire from mortars, recoilless rifles and rocket-propelled grenades between 04:15 and 04:30, killing one Australian and wounded another. The defenders at Balmoral then directed fire from helicopter gunships and C-47 Spooky aircraft onto likely assembly areas and mortar base plate locations. Around 05:00 the North Vietnamese finally broke contact and withdrew, removing the majority of their casualties under covering fire as the Australian artillery fired on their escape routes. Clearing patrols from 3 RAR then swept the area at first light but found only six North Vietnamese dead and a large quantity of weapons, ammunition and equipment. The Australians subsequently began the evacuation of their casualties, having lost a further three dead and 14 wounded.
Bunker clash and patrolling in AO Surfers, 26−27 May 1968
Dunstan subsequently directed the clearance of the bunker system that had been located the previous day, and a combined force of D Company, 1 RAR and 1 Troop C Squadron under the command of Major Tony Hammett was tasked with carrying out a reconnaissance-in-force. Departing at 06:00 on the morning of the 26 May, the lead Australian infantry platoon was contacted at 12:27 by small arms fire and rocket-propelled grenades 3000 metres (3,280.8 yd) from Coral, after having paused to direct an air strike by Canberra bombersEnglish Electric Canberra
The English Electric Canberra is a first-generation jet-powered light bomber manufactured in large numbers through the 1950s. The Canberra could fly at a higher altitude than any other bomber through the 1950s and set a world altitude record of 70,310 ft in 1957...
from No. 2 Squadron RAAF
No. 2 Squadron RAAF
No. 2 Squadron is a Royal Australian Air Force squadron. From its formation in 1916, it has operated a variety of aircraft types including fighters, bombers, and Airborne Early Warning & Control.-World War I:No...
onto a nearby bunker system. In what would become the first Australian combined infantry and tank assault since the Bougainville campaign against the Japanese in the Second World War, the tanks were called forward and attacked the bunkers with anti-tank solid shot and machine-guns, while the infantry indicated targets with their M79 grenade launcher
M79 grenade launcher
The M79 grenade launcher is a single-shot, shoulder-fired, break-action grenade launcher that fires a 40x46mm grenade which used what the US Army called the High-Low Propulsion System to keep recoil forces low, and first appeared during the Vietnam War...
s. Moving forward two or three across, the Centurions crushed many of the bunkers with their tracks and engaged others at point-blank range with their main armament. Further bunkers were exposed when the foliage was cut away by canister rounds and the infantry followed the tanks using rifles and grenades, while assault pioneers provided support with a flame-thrower as artillery and mortar fire engaged depth targets.
The bunkers were well constructed and camouflaged, while visibility was limited to just 10 to 20 m (10.9 to 21.9 yd) among the dense vegetation and consequently many were not located by the Australians until they were upon them. The bunkers were sited to be mutually supporting, and the North Vietnamese defending them responded with a crossfire of RPG-2
RPG-2
The RPG-2 was the first rocket-propelled grenade launcher designed in the Soviet Union.-Development:The RPG-2 , was a man-portable, shoulder-launched rocket-propelled grenade anti-armor weapon...
rocket-propelled grenades, however the heavy armour of the Centurions proved impervious and remained undamaged.The newer RPG-7
RPG-7
The RPG-7 is a widely-produced, portable, unguided, shoulder-launched, anti-tank rocket-propelled grenade launcher. Originally the RPG-7 and its predecessor, the RPG-2, were designed by the Soviet Union, and now manufactured by the Bazalt company...
was able to penetrate the Centurion hull however, as was demonstrated during subsequent contacts in the following months. See . During a three-hour battle the Australians and North Vietnamese fought each other from bunker to bunker. However, with aerial reconnaissance revealing that the bunker system was part of a much larger base area, and with the Australian force judged too small to deal with it, Bennett directed Hammett to retire by late afternoon. Amidst a heavy rain the Australians broke contact at 16:00 under the cover of artillery and mortar fire, and they moved quickly back to FSB Coral. Fourteen bunkers had been destroyed, while seven North Vietnamese bodies were counted and quantities of weapons, ammunition and documents were also captured. However many more men were undoubtedly entombed in the bunkers after being crushed by the tanks, making a comprehensive body count impossible. Although it had been a fierce engagement the Australians suffered no casualties, a fact which was attributed to the effectiveness of the tanks, and further validated Dunstan's decision to call them forward from Nui Dat. Second Lieutenant John Salter was later awarded the Military Cross for his leadership during this and other actions.
Over the following days 1 ATF continued patrolling, however these operations resulted in only small-scale contact with the North Vietnamese. On 27 May an Australian Sioux light observation helicopter was damaged by ground fire during a reconnaissance flight 3 kilometres (1.9 mi) outside AO Newport, and air strikes on the area exposed several bunkers which were likely to have been used by the North Vietnamese as a headquarters; they were subsequently destroyed by artillery fire.
Second attack on FSB Balmoral, 28 May 1968
A second regimental-sized attack against 3 RAR at Balmoral was launched by the North Vietnamese at 02:30 on 28 May, with a two-battalion assault preceded by 60 mm and 80 mm mortar fire from the south. Meanwhile, FSB Coral was also attacked by indirect fire from 02:45. Similar to the attack two nights before, it began with another feint from the south as the North Vietnamese sappers blew up the wire in front of A Company, but was successfully broken up before it reached the wire by the Australian defenders with claymore mines and small-arms fire from their M60 machine-guns, L1A1 Self Loading Rifles and M16 assault rifles. The main assault began at 03:10 from the north-east, with the brunt again being borne by Phillips' D Company. The Australian infantrymen were once again supported by tanks firing canister shot and machine-guns, while artillery and mortars provided continuous close indirect fires, with the combined effect of this firepower stopping the North Vietnamese on the wire before they could penetrate the position. Although the assault was well co-ordinated, the North Vietnamese had lost the element of surprise, with the preparatory fire once more alerting the defenders. The assault was subsequently called off after 30 minutes, while at 03:40 a small probe developed from the east but quickly dissipated. Sporadic mortar and rocket fire continued to fall as helicopter light-fire teams and C-47 Spooky gunships engaged the North Vietnamese, directed by forward air controlForward air control
Forward air control is the provision of guidance to Close Air Support aircraft intended to ensure that their attack hits the intended target and does not injure friendly troops. This task is carried out by a forward air controller . For NATO forces the qualifications and experience required to be...
aircraft. From 05:00 until first light artillery from FSB Coral provided continuous battlefield illumination to stymie North Vietnamese attempts to clear their dead and wounded, and they finally withdrew by 05:30.
At first light a clearing patrol from D Company, 3 RAR swept the area with tanks and APCs in support, killing and capturing a number of attackers that had been pinned down in old B-52 bomb craters to the north of Balmoral. The daylight revealed that the North Vietnamese had once again been soundly defeated leaving 42 dead and seven prisoners, while Australian losses were one killed and eight wounded. Quantities of weapons, clothing, ammunition and equipment were also recovered by the Australians. Phillips was subsequently awarded the Military Cross for his leadership during the battle. Many of the North Vietnamese dead were teenagers of 16 or 17 years, evidence that the PAVN had begun drafting 15 year-old boys into its combat units; as had happened after the earlier fighting, their bodies were collected by a bulldozer and buried in a mass grave
Mass grave
A mass grave is a grave containing multiple number of human corpses, which may or may not be identified prior to burial. There is no strict definition of the minimum number of bodies required to constitute a mass grave, although the United Nations defines a mass grave as a burial site which...
. Later, a large number of shell scrapes were discovered to the north-east of Balmoral during an aerial reconnaissance by a Sioux light observation helicopter, and they were thought likely to have been used by the North Vietnamese as an assembly area before being engaged by artillery firing defensive fire tasks early in the battle. The successful defence of Balmoral and the high ratio of North Vietnamese killed had confirmed the judgement of MacDonald and Dunstan and validated the decision to adopt an aggressive defence with strong static positions and forceful patrolling. The failed assault proved to be the final attempt to remove 1 ATF from AO Surfers, and there were no further attacks by the North Vietnamese against either Coral or Balmoral.
Operation Toan Thang I concludes, 28 May − 6 June 1968
The Australians continued to patrol aggressively, with further clashes occurring between companies from 1 RAR and 3 RAR, and the North Vietnamese. On the morning of 30 May, C Company, 1 RAR under Major Ian Campbell had patrolled into a bunker system 3 kilometres (1.9 mi) east of FSB Coral and was contacted by a large dug-in North Vietnamese force. At 08:30 the lead platoon, 9 Platoon, came under fire and was pinned down by rocket-propelled grenades and 7.62 mm RPD light machine-gunsRPD
The RPD is a 7.62mm light machine gun developed in the Soviet Union by Vasily Degtyaryov for the intermediate 7.62x39mm M43 cartridge. It was created as a replacement for the DP machine gun chambered for the 7.62x54mmR Mosin rifle round...
. Meanwhile, 7 Platoon moved to assist but was also pinned down, with one section suffering heavy casualties and losing an M60 machine-gun. Campbell struggled to establish a company defensive position, pushing 8 Platoon forward covered by armed helicopters and indirect fire. Yet with the two forces facing each other at only 10 to 15 m (10.9 to 16.4 yd), the Australian artillery and mortars were rendered ineffective and Dunstan subsequently dispatched two tanks from Coral to reinforce them as heavy fighting developed. Supported by APCs, the Australian infantry and tanks then assaulted and cleared several bunkers, allowing the lead platoon to withdraw after three hours of fighting. Suffering one killed and seven wounded, C Company broke contact by 11:55, withdrawing 500 metres (546.8 yd) as artillery, mortars and air strikes engaged the bunker system. Three days later C Company returned to the area to recover the lost machine-gun only to find the position as they had left it; strewn with dead bodies and caved-in bunkers with the battlefield having been abandoned by the North Vietnamese, who had also withdrawn following the Australian assault. The tanks had destroyed at least eight bunkers, while communist casualties included 24 dead and a further eight believed killed. Another group of 13 had also been engaged in the open by artillery, and were also possibly killed.
The North Vietnamese then appeared to abandon AO Surfers to the Australians, and increasingly diverted their movement around Coral and Balmoral. Operation Toan Thang I continued for another six days regardless, and 1 ATF patrolled extensively into June. However with contacts decreasing, on 1 June Weyand judged the Australian blocking operation to have been successful in limiting the offensive against Saigon, and directed US and ARVN units to relieve them. Meanwhile, Hughes returned from leave and visited Dunstan at FSB Coral to discuss the situation and the task force's redeployment to Phuoc Tuy. FSB Balmoral was subsequently closed on 5 June, with 3 RAR and its direct support battery returning to Nui Dat by air, while FSB Coral was also closed the following day. The operation finally concluded on 6 June, with 1 RAR returning to Nui Dat by Chinook after handing over the area of operations to the US 1st Infantry Division, while the logistic, artillery and armoured elements returned by road convoy. The approach of the wet season concerned Hughes, who believed it could hinder the movement of the Centurions and leave them stranded 120 kilometres (74.6 mi) from base until the dry season. The tanks departed FSB Coral on 5 June; travelling via Bearcat and Route 15, the road move went without incident and they returned to Nui Dat by 17:00 on 6 June.
Aftermath
Although Operation Toan Thang I had begun relatively quietly for the Australians it had ended far more spectacularly. During 26 days of fighting they had inflicted punishing losses on the communists and forced the North Vietnamese 7th Division to postpone a further attack on Saigon. North Vietnamese and Viet Cong casualties in AO Surfers included 267 killed confirmed by body count, 60 possibly killed, 7 wounded and 11 captured, while Australian losses were 25 killed and 99 wounded. Five New Zealanders and five American soldiers were also wounded. Westmoreland had been impressed by the results achieved by 1 ATF in May and June, and while US and South Vietnamese forces had undoubtedly borne the brunt of the fighting for the allies during this time, 1 ATF had featured prominently in American reports. The battle was the first occasion that the Australians had met the North Vietnamese Army in regimental strength, and operating in depth in a series of engagements akin to conventional warfareConventional warfare
Conventional warfare is a form of warfare conducted byusing conventional military weapons and battlefield tactics between two or more states in open confrontation. The forces on each side are well-defined, and fight using weapons that primarily target the opposing army...
they had ultimately fought their largest, most hazardous and most sustained battle of the war. For their involvement in the action the Royal Australian Regiment
Royal Australian Regiment
The Royal Australian Regiment is the parent regiment for regular infantry battalions of the Australian Army and is the senior infantry regiment of the Royal Australian Infantry Corps...
, the 3rd Cavalry Regiment and 1st Armoured Regiment were all subsequently awarded the battle honour
Battle honour
A battle honour is an award of a right by a government or sovereign to a military unit to emblazon the name of a battle or operation on its flags , uniforms or other accessories where ornamentation is possible....
'Coral-Balmoral', one of only five awarded to Australian units during the war.
The fighting represented a watershed in the campaign for the Australians, and while they had deployed outside Phuoc Tuy province previously they now faced regular North Vietnamese formations and Viet Cong Main Force units operating in battalion and regimental strength, rather than southern Viet Cong guerrillas. Deployed astride their lines of communication, the Australians had forced the communists to respond, resulting in a set-piece battle far removed from the counter-insurgency doctrine they normally espoused. Yet while the battle ended in victory for the Australians, they had come close to suffering defeat at the hands of the North Vietnamese. Inexperienced at large air-mobile operations, poor reconnaissance and inadequate operational planning had caused delays and confusion during the fly-in to FSB Coral, leaving 1 ATF exposed to attack on the first night. The North Vietnamese had fought in greater numbers, with heavier firepower and greater intensity than previously experienced by the Australians in Vietnam, forcing them to refine their tactics. Later, the Australian use of platoon patrols to search an area and to conduct ambushes was challenged by the constant movement of North Vietnamese forces operating in superior strength, which threatened to quickly overwhelm an isolated patrol.
Prolonged operations outside of Phuoc Tuy during the first half of 1968 had placed considerable strain on the Australian logistic system. Modelled on the experience of Operation Coburg, logistic resupply for Operation Toan Thang I again required the Vung Tau-based 1ALSG to be split in order to provide a forward logistic element at the US base at Long Binh. A forward task force maintenance area had also been established, first at Bearcat and then later at FSB Coral. Re-supply by road had continued daily from Long Binh to Bearcat, while following the move to Coral re-supply was primarily by air due to the threat of possible interdiction. Meanwhile, movement from unit echelons in the forward maintenance area was also undertaken by helicopter. Units in the field received one fresh meal each day, with the other two meals based half on the American C ration and half on the Australian combat ration. Although the supply of fuel and ammunition was generally satisfactory, stocks had run dangerously low on one occasion during heavy fighting at FSB Coral due to the calculation of usage rates based on previous operations, requiring an emergency night-time resupply by Chinook while the base was under attack. Re-supply of water had also been particularly difficult due to unavailability of a permanent water point. Ultimately water had to be delivered by air at a rate of 14000 litre per day from Long Binh using rubber fuel bladders.
While many of the failings in Australian command arrangements evident from the initial stages of the battle were rapidly rectified as the task force developed more exact standard operating procedures, future operational planning would need pay greater heed to intelligence when determining the strength of patrols, as well as providing for quick reaction forces and rapidly responsive indirect fires to support sub-units operating independently. Ultimately the firepower of the Australian combined arms teams
Combined arms
Combined arms is an approach to warfare which seeks to integrate different branches of a military to achieve mutually complementary effects...
had proven decisive, however. Indeed, while the value of using armour in Vietnam was originally questioned by the Australian Army, the performance of the tanks during the fighting at Coral and Balmoral had demonstrated their advantages once and for all. Whereas before the battle some infantry had doubted the usefulness or necessity of the Centurions, afterwards they did not like working without them. Over the next four years the tanks would provide invaluable close support, particularly during the clearance of bunker systems, proving to be powerful weapons in both offence and defence and being credited with limiting casualties among the Australian infantry.
For the North Vietnamese however, the battle was just one part of the intense May Offensive, although they later claimed to have killed 800 Australians during a single attack—a fact which indicated the importance they may have placed on it at the time.Although years later the fighting at Coral and Balmoral did not rate even a mention in PAVN official history of the conflict, see . They had reacted quickly and proficiently to mount a battalion attack on the first night in an attempt to push the Australians off their line of communications, however while this and the subsequent attacks on Coral and Balmoral had been well co-ordinated, they had repeatedly surrendered the element of surprise with preparatory fire and poor light discipline that alerted the defenders on each occasion. Meanwhile, inflexibility in command-and-control arrangements and a lack of radio communications had forced the North Vietnamese to operate on fixed schedules, preventing them from taking the initiative or responding rapidly to changing situations. Such inflexibility had resulted in predictability, with the communist commanders ultimately committing their forces to a frontal assault on Coral on the first night, and mounting very similar attacks against Balmoral on the nights of 26 and 28 May, both of which ended in costly failures.
Meanwhile, 4th Battalion, Royal Australian Regiment
4th Battalion, Royal Australian Regiment
The 4th Battalion, Royal Australian Regiment, was an Australian Army infantry battalion and part of the Royal Australian Regiment. The battalion was formed on 1 February 1964 and was renamed the 2nd Commando Regiment on 19 June 2009....
(4 RAR) had arrived to replace 2 RAR. Joined by two New Zealand infantry companies—W and V Companies—it was designated 4 RAR/NZ (ANZAC) and under the command of Lieutenant Colonel Lee Greville they commenced operations in June. Later, on 13 June, 1 RAR was again deployed to protect the bases at Long Binh and Bien Hoa from rocket attacks, operating to the north and east of Bien Hoa as part of a wider allied operation, known as Operation Toan Thang II. On 23 June the battalion was joined by 4 RAR/NZ (ANZAC) and 1 ATF headquarters was deployed under Dunstan's command as the operation expanded. On 3 July, 1RAR was relieved by 3RAR and returned to Nui Dat. Largely uneventful, the operation resulted in minimal contact and lasted until 18 July. Three Viet Cong were killed and 13 captured, while Australian casualties included one killed and one wounded. The Australians then attempted to interdict Viet Cong supplies, with a small force of tanks and APCs supported B Company 3 RAR occupying the area along Route 15 to the west and north-west of Baria between 25–30 June during Operation Ulladulla. As part of the operation the tanks ambushed a river and sank seven loaded sampan
Sampan
A sampan is a relatively flat bottomed Chinese wooden boat from long. Some sampans include a small shelter on board, and may be used as a permanent habitation on inland waters. Sampans are generally used for transportation in coastal areas or rivers, and are often used as traditional fishing boats...
s with their 20-pounder main armament.
Creighton Abrams
Creighton Williams Abrams Jr. was a general in the United States Army who commanded military operations in the Vietnam War from 1968–72 which saw U.S. troop strength in Vietnam fall from a peak of 543,000 to 49,000. He served as Chief of Staff of the United States Army from 1972 until shortly...
replaced Westmoreland and the change in command had resulted in a transformation of both the concept of the war and its conduct. Abrams directed that the allied main effort would switch to protecting population centres, rather than searching for and attempting to destroy North Vietnamese and Viet Cong main force units as they had done previously. Equally, the prosecution of the war would increasingly be handed over to the South Vietnamese under a policy of Vietnamization
Vietnamization
Vietnamization was a policy of the Richard M. Nixon administration during the Vietnam War, as a result of the Viet Cong's Tet Offensive, to "expand, equip, and train South Vietnam's forces and assign to them an ever-increasing combat role, at the same time steadily reducing the number of U.S....
, with the Americans aiming to keep North Vietnamese and Viet Cong units off balance to prevent them from interfering with resupply and reinforcement until the South Vietnamese could fight the war on their own. For the Australians the change in allied strategy foreshadowed a return to the pacification of Phuoc Tuy province. Operations outside the province over the previous eighteen months had been costly, and of the 228 Australians killed and 1,200 wounded during the war to that point almost two-thirds had been killed since January 1967.147 Australian soldiers were killed in Vietnam between January 1967 and 30 June 1968, with 62 killed and 310 wounded in the first six months of 1968 alone. See . From July, 1 ATF completed a number of search-and-clear operations along the northern border areas and west of their Tactical Area of Responsibility
Tactical Area of Responsibility
Tactical Area of Responsibility is a prescribed area in a theatre of combat which has been assigned to a unit commander who is responsible for, and has the authority to act on, the development and maintenance of installations and the conduct of tactical operations, area defence, coordination of...
in Phouc Tuy province.
Meanwhile, the Viet Cong began their third general offensive for the year on 17 August 1968, attacking dozens of towns and military installations throughout South Vietnam with rockets and mortars, including Saigon. As part of the allied response the Australians were deployed to defend Ba Ria, the provincial capital, while during 20−23 August, B and C Company, 1 RAR with a troop of Centurion tanks were involved in intense urban fighting while supporting South Vietnamese forces to clear a company-sized force from D445 VC Battalion occupying Long Dien. At least 17 Viet Cong were killed during the fighting, while Australian casualties included six wounded. During the next three weeks, all three Australian battalions were deployed on search-and-destroy operations, yet the Viet Cong successfully eluded them. Continuing until 30 September, the renewed offensive lacked the scale of the previous attacks and again resulted in heavy communist casualties, failing to produce lasting military gains and contributing to an overall decline in Viet Cong and North Vietnamese combat power in the south. Yet such failures were neither final nor decisive and Hanoi seemed to increasingly hold the upper hand. The war continued regardless, while allied military strategic objectives were increasingly coming into question. In late-1968 1 ATF was again deployed outside its base in Phouc Tuy, operating against suspected communist bases in the May Tao and Hat Dich areas as part of Operation Goodwood. The operation led to sustained fighting during a 78-day sweep between December 1968 and February 1969 and later became known as the Battle of Hat Dich
Battle of Hat Dich
The Battle of Hat Dich was a series of military actions fought between the 1st Australian Task Force and the North Vietnamese Army and Viet Cong during the Vietnam War...
.