History of the United States Navy
Encyclopedia
The history of the United States Navy divides into two major periods: the "Old Navy", a small but respected force of sailing ship
Sailing ship
The term sailing ship is now used to refer to any large wind-powered vessel. In technical terms, a ship was a sailing vessel with a specific rig of at least three masts, square rigged on all of them, making the sailing adjective redundant. In popular usage "ship" became associated with all large...

s that was also notable for innovation in the use of ironclads during the American Civil War
American Civil War
The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

, and the "New Navy", the result of a modernization effort that began in the 1880s made it the largest in the world by the 1920s.

The United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 recognizes 13 October 1775 as the date of its official establishment, when the Continental Congress passed a resolution creating the Continental Navy. Soon after the end of the Revolutionary War the last ship was sold and the Continental Navy was disbanded. Eleven years later, conflicts between American merchant shipping and pirates in the Mediterranean Sea led to the Naval Act of 1794
Naval Act of 1794
The Act to Provide a Naval Armament, also known as the Naval Act, was passed by the United States Congress on March 27, 1794 and established the country's first naval force, which eventually became the United States Navy...

, which created the US Navy. The original six frigates were authorized as part of the Act. During the next 20 years the Navy fought the French Navy in the Quasi-War
Quasi-War
The Quasi-War was an undeclared war fought mostly at sea between the United States and French Republic from 1798 to 1800. In the United States, the conflict was sometimes also referred to as the Franco-American War, the Pirate Wars, or the Half-War.-Background:The Kingdom of France had been a...

, Barbary states in the First
First Barbary War
The First Barbary War , also known as the Barbary Coast War or the Tripolitan War, was the first of two wars fought between the United States and the North African Berber Muslim states known collectively as the Barbary States...

 and Second Barbary War
Second Barbary War
The Second Barbary War , also known as the Algerine or Algerian War, was the second of two wars fought between the United States and the Ottoman Empire's North African regencies of Tripoli, Tunis, and Algeria known collectively as the Barbary states. The war between the Barbary States and the U.S...

s, and the British in the War of 1812
War of 1812
The War of 1812 was a military conflict fought between the forces of the United States of America and those of the British Empire. The Americans declared war in 1812 for several reasons, including trade restrictions because of Britain's ongoing war with France, impressment of American merchant...

. After the War of 1812, the Navy was at peace until the Mexican-American war in 1846, and served to combat piracy in the Mediterranean and Caribbean seas, and the slave trade. During this period the Naval Academy
United States Naval Academy
The United States Naval Academy is a four-year coeducational federal service academy located in Annapolis, Maryland, United States...

 was founded in 1845. In 1861, the American Civil War
American Civil War
The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

 began and the US Navy fought the small Confederate Navy with both sailing ships and ironclad ships while forming a blockade on the confederacy. After the Civil war most of the ships were laid up in reserve and by 1878 the Navy only included 6,000 men.

In 1882, the US Navy consisted of many outdated ship designs. In the next decade Congress approved building multiple modern armored cruisers and battleships and by the turn of the century had moved from twelfth place in 1870 to fifth place in terms of numbers of ships. After winning two major battles during the Spanish–American
Spanish-American War
The Spanish–American War was a conflict in 1898 between Spain and the United States, effectively the result of American intervention in the ongoing Cuban War of Independence...

 in 1898, the Navy continued to build more ships and by the end of World War I had more men and women in uniform than the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

. The Washington Naval Conference recognized the Navy as equal in capital ship size to the Royal Navy, and during the 1920s and 1930s, the Navy built several aircraft carriers and modern battleships. The Navy was drawn into World War II after the Attack on Pearl Harbor
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...

 on 7 December 1941, and over the next 4 years fought many historic battles including the Battle of the Coral Sea
Battle of the Coral Sea
The Battle of the Coral Sea, fought from 4–8 May 1942, was a major naval battle in the Pacific Theater of World War II between the Imperial Japanese Navy and Allied naval and air forces from the United States and Australia. The battle was the first fleet action in which aircraft carriers engaged...

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

, multiple naval battles during the Guadalcanal Campaign
Guadalcanal campaign
The Guadalcanal Campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by Allied forces, was a military campaign fought between August 7, 1942 and February 9, 1943 on and around the island of Guadalcanal in the Pacific theatre of World War II...

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

. Much of the Navy's activity was in support of landings, not only in the "island-hopping" campaign in the Pacific, but also in the landings in Europe. When the Japanese surrendered, a large flotilla entered Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

 to witness the ceremony conducted on the battleship . By the end of the war the Navy had over 1600 warships.

After World War II ended, the US Navy entered the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

 and participated in the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

, Vietnam War
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...

, Gulf War
Gulf War
The Persian Gulf War , commonly referred to as simply the Gulf War, was a war waged by a U.N.-authorized coalition force from 34 nations led by the United States, against Iraq in response to Iraq's invasion and annexation of Kuwait.The war is also known under other names, such as the First Gulf...

 and Iraq War. Nuclear power and ballistic missile technology led to new ship propulsion and weapon systems which were used in the s and s. By 1978 the number of ships had dwindled to less than 400, many of which were from World War II, and Ronald Reagan instituted a program for a modern 600-ship Navy. Today, the United States is the world's undisputed naval superpower, with the ability to engage in two simultaneous limited wars along separate fronts.

Continental Navy (1775–1785)

On 12 June 1775, the Rhode Island General Assembly
Rhode Island General Assembly
The State of Rhode Island General Assembly is the state legislature of the U.S. state of Rhode Island. A bicameral body, it is composed of the lower Rhode Island House of Representatives with 75 representatives, and the upper Rhode Island Senate with 38 senators...

, meeting at East Greenwich
East Greenwich, Rhode Island
East Greenwich is a town in and the county seat of Kent County, Rhode Island, United States. The population was 13,146 at the 2010 census. East Greenwich is the wealthiest municipality within the state of Rhode Island....

, passed a resolution creating a navy for the colony of Rhode Island. The same day, Governor Nicholas Cooke
Nicholas Cooke
Nicholas Cooke was a governor of the Colony of Rhode Island and Providence Plantations during the American Revolutionary War, and after Rhode Island became a state, he continued in this position to become the first Governor of the State of Rhode Island. Born in the maritime town of Providence, he...

 signed orders addressed to Captain Abraham Whipple
Abraham Whipple
Abraham Whipple was an American revolutionary naval commander in the Continental Navy. Whipple was born near Providence, Rhode Island and chose to be a seafarer early in his life. He embarked upon a career in the lucrative West Indies trade, working for Moses and John Brown...

, commander of the sloop Katy
USS Providence (1775)
Originally chartered by the Rhode Island General Assembly as Katy, USS Providence was a sloop in the Continental Navy.-Service as Katy:...

, and commodore of the armed vessels employed by the government.

The first formal movement for the creation of a Continental navy came from Rhode Island, because its merchants' widespread smuggling activities had been severely harassed by British frigates. On 26 August 1775, Rhode Island General Assembly
Rhode Island General Assembly
The State of Rhode Island General Assembly is the state legislature of the U.S. state of Rhode Island. A bicameral body, it is composed of the lower Rhode Island House of Representatives with 75 representatives, and the upper Rhode Island Senate with 38 senators...

 passed a resolution that there be a single Continental fleet
Continental Navy
The Continental Navy was the navy of the United States during the American Revolutionary War, and was formed in 1775. Through the efforts of the Continental Navy's patron, John Adams and vigorous Congressional support in the face of stiff opposition, the fleet cumulatively became relatively...

 funded by the Continental Congress
Continental Congress
The Continental Congress was a convention of delegates called together from the Thirteen Colonies that became the governing body of the United States during the American Revolution....

. The resolution was introduced in the Continental Congress on 3 October 1775, but was tabled. In the meantime, George Washington
George Washington
George Washington was the dominant military and political leader of the new United States of America from 1775 to 1799. He led the American victory over Great Britain in the American Revolutionary War as commander-in-chief of the Continental Army from 1775 to 1783, and presided over the writing of...

 had begun to acquire ships, starting with the schooner
Schooner
A schooner is a type of sailing vessel characterized by the use of fore-and-aft sails on two or more masts with the forward mast being no taller than the rear masts....

 Hannah which was paid for out of Washington's own pocket. Hannah was commissioned and launched on 5 September 1775, from the port of Beverly, Massachusetts
Beverly, Massachusetts
Beverly is a city in Essex County, Massachusetts, United States. The population was 39,343 on , which differs by no more than several hundred from the 39,862 obtained in the 2000 census. A resort, residential and manufacturing community on the North Shore, Beverly includes Beverly Farms and Prides...

.
The US Navy recognizes 13 October 1775 as the date of its official establishment — the date of the passage of the resolution of the Continental Congress at Philadelphia, Pennsylvania that created the Continental Navy. On this day, Congress authorized the purchase of two vessels to be armed for a cruise against British merchant ships; these ships became and . The first ship in commission was the which was purchased on 4 November and commissioned
Ship commissioning
Ship commissioning is the act or ceremony of placing a ship in active service, and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to the placing of a warship in active duty with its country's military...

 on 3 December by Captain Dudley Saltonstall
Dudley Saltonstall
Dudley Saltonstall was an American naval commander during the American Revolutionary War. He is best known as the commander of the naval forces of the 1779 Penobscot Expedition, which ended in complete disaster, with all ships lost...

. On November 10, 1775, the Continental Congress passed a resolution calling for two battalions of Marines to be raised for service with the fleet. John Adams
John Adams
John Adams was an American lawyer, statesman, diplomat and political theorist. A leading champion of independence in 1776, he was the second President of the United States...

 drafted its first governing regulations, which were adopted by Congress on 28 November 1775 and remained in effect throughout the Revolution. The Rhode Island resolution was reconsidered by the Continental Congress and was passed on 13 December 1775, authorizing the building of thirteen frigates within the next three months, five ships of 32 guns, five with 28 guns and three with 24 guns.

On Lake Champlain, Benedict Arnold
Benedict Arnold
Benedict Arnold V was a general during the American Revolutionary War. He began the war in the Continental Army but later defected to the British Army. While a general on the American side, he obtained command of the fort at West Point, New York, and plotted to surrender it to the British forces...

 ordered the construction of 12 Navy vessels to slow down the British fleet that was invading New York from Canada. The British fleet did destroy Arnold's fleet, but the US fleet managed to slow down the British after a two-day battle, known as the Battle of Valcour Island
Battle of Valcour Island
The naval Battle of Valcour Island, also known as the Battle of Valcour Bay, took place on October 11, 1776, on Lake Champlain. The main action took place in Valcour Bay, a narrow strait between the New York mainland and Valcour Island...

, and managed to slow the progression of the British Army. By mid-1776, a number of ships, ranging up to and including the thirteen frigate
Frigate
A frigate is any of several types of warship, the term having been used for ships of various sizes and roles over the last few centuries.In the 17th century, the term was used for any warship built for speed and maneuverability, the description often used being "frigate-built"...

s approved by Congress, were under construction, but their effectiveness was limited; they were completely outmatched by the mighty Royal Navy, and nearly all were captured or sunk by 1781.

Privateer
Privateer
A privateer is a private person or ship authorized by a government by letters of marque to attack foreign shipping during wartime. Privateering was a way of mobilizing armed ships and sailors without having to spend public money or commit naval officers...

s had some success, with 1,697 letters of marque
Letter of marque
In the days of fighting sail, a Letter of Marque and Reprisal was a government licence authorizing a person to attack and capture enemy vessels, and bring them before admiralty courts for condemnation and sale...

 being issued by Congress. Individual states, American agents in Europe and in the Caribbean also issued commissions; taking duplications into account more than 2,000 commissions were issued by the various authorities. Lloyd's of London estimated that 2,208 British ships were taken by Yankee privateers, amounting to almost $66 million, a significant sum at the time.

One particularly notable American naval hero of the Revolution was John Paul Jones
John Paul Jones
John Paul Jones was a Scottish sailor and the United States' first well-known naval fighter in the American Revolutionary War. Although he made enemies among America's political elites, his actions in British waters during the Revolution earned him an international reputation which persists to...

, who defeated the British ship in the Battle of Flamborough Head
Battle of Flamborough Head
The Battle of Flamborough Head was a naval battle that took place on 23 September 1779, in the North Sea off the coast of Yorkshire between an American Continental Navy squadron led by John Paul Jones and the two British escort vessels protecting a large merchant convoy...

. Partway through the battle, with the rigging
Rigging
Rigging is the apparatus through which the force of the wind is used to propel sailboats and sailing ships forward. This includes masts, yards, sails, and cordage.-Terms and classifications:...

 of the two ships entangled, and several guns of Jones' ship out of action, the captain of Serapis asked Jones if he had struck his colors
Striking the colors
Striking the colors is the universally recognized indication of surrender, particularly for ships at sea. Surrender is dated from the time the ensign is struck.-In international law:# "Colors. A national flag . The colors . ....

, to which Jones has been quoted as replying, "I have not yet begun to fight!"

France officially entered the war on June 17th, 1778, and the ships of the French Navy sent to the Western Hemisphere spent most of the year in the West Indies, and only sailed near the Thirteen Colonies during the Caribbean hurricane season from July until November. The first French fleet attempted landings in New York and Rhode Island, but ultimately failed to engage British forces during 1778. In 1779, a fleet commanded by Vice Admiral Charles Henri, comte d'Estaing assisted American forces attempting to recapture Savvanah, Georgia
Siege of Savannah
The Siege of Savannah or the Second Battle of Savannah was an encounter of the American Revolutionary War in 1779. The year before, the city of Savannah, Georgia, had been captured by a British expeditionary corps under Lieutenant-Colonel Archibald Campbell. The siege itself consisted of a joint...

.

In 1780, a fleet with 6,000 troops commanded by Lieutenant General Jean-Baptiste, comte de Rochambeau
Jean-Baptiste Donatien de Vimeur, comte de Rochambeau
Marshal of France Jean-Baptiste Donatien de Vimeur, comte de Rochambeau was a French nobleman and general who participated in the American Revolutionary War as the commander-in-chief of the French Expeditionary Force which came to help the American Continental Army...

 landed at Newport, Rhode Island, and shortly afterwards the fleet was blockaded by the British. In early 1781, Washington and de Rochambeau planned an attack against the British in the Chesapeake Bay area to coordinate with the arrival of a large fleet commanded by Vice Admiral François, comte de Grasse
François Joseph Paul de Grasse
Lieutenant Général des Armées Navales François-Joseph Paul, marquis de Grasse Tilly, comte de Grasse was a French admiral. He is best known for his command of the French fleet at the Battle of the Chesapeake, which led directly to the British surrender at Yorktown...

. Successfully deceiving the British that an attack was planned in New York, Washington and de Rochambeau marched to Virginia, and de Grasse began landing forces near Yorktown, Virginia. On 5 September 1781 a major naval action was fought by de Grasse and the British at the Battle of the Virginia Capes, ending with the French fleet in control of the Chesapeake bay. Protected from the sea by the French fleet, American and French forces surrounded, besieged and forced the surrender
Siege of Yorktown
The Siege of Yorktown, Battle of Yorktown, or Surrender of Yorktown in 1781 was a decisive victory by a combined assault of American forces led by General George Washington and French forces led by the Comte de Rochambeau over a British Army commanded by Lieutenant General Lord Cornwallis...

 of British forces commanded by Lord Corwallis
Charles Cornwallis, 1st Marquess Cornwallis
Charles Cornwallis, 1st Marquess Cornwallis KG , styled Viscount Brome between 1753 and 1762 and known as The Earl Cornwallis between 1762 and 1792, was a British Army officer and colonial administrator...

, effectively winning the war and leading to peace two years later.

Disarmament (1785–1794)

The Revolutionary War was ended by the Treaty of Paris
Treaty of Paris (1783)
The Treaty of Paris, signed on September 3, 1783, ended the American Revolutionary War between Great Britain on the one hand and the United States of America and its allies on the other. The other combatant nations, France, Spain and the Dutch Republic had separate agreements; for details of...

 in 1783, and by 1785 the Continental Navy was disbanded and the remaining ships were sold. The frigate Alliance
USS Alliance (1778)
The first USS Alliance of the United States Navy was a 36-gun sailing frigate of the American Revolutionary War, notable for having fired the last shot of the war....

, which had fired the last shots of the American Revolutionary War, was also the last ship in the Navy. A faction within Congress wanted to keep the ship, but the new nation did not have the funds to keep her in service. Other than a general lack of money, other factors for the disarmament of the navy were the loose confederation of the states, a change of goals from war to peace, and more domestic and fewer foreign interests.

After the American Revolutionary War the brand-new United States struggled to stay financially afloat. National income was desperately needed and most came from tariff
Tariff
A tariff may be either tax on imports or exports , or a list or schedule of prices for such things as rail service, bus routes, and electrical usage ....

s on imported goods. Because of rampant smuggling
Smuggling
Smuggling is the clandestine transportation of goods or persons, such as out of a building, into a prison, or across an international border, in violation of applicable laws or other regulations.There are various motivations to smuggle...

, the need was immediate for strong enforcement of tariff laws. On 4 August 1790 the United States Congress
United States Congress
The United States Congress is the bicameral legislature of the federal government of the United States, consisting of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C....

, urged on by Secretary of the Treasury
United States Secretary of the Treasury
The Secretary of the Treasury of the United States is the head of the United States Department of the Treasury, which is concerned with financial and monetary matters, and, until 2003, also with some issues of national security and defense. This position in the Federal Government of the United...

 Alexander Hamilton
Alexander Hamilton
Alexander Hamilton was a Founding Father, soldier, economist, political philosopher, one of America's first constitutional lawyers and the first United States Secretary of the Treasury...

, created the Revenue-Marine, the forerunner for the United States Coast Guard
United States Coast Guard
The United States Coast Guard is a branch of the United States Armed Forces and one of the seven U.S. uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the military branches for having a maritime law enforcement mission and a federal regulatory agency...

, to enforce the tariff and all other maritime laws. Ten cutters
First ten Revenue Service cutters
The first ten Revenue Service cutters were ten oceangoing vessels built at the behest of the first U.S. Congress in the early 1790s to crack down on smuggling. Since the U.S...

 were initially ordered. Between 1790 and 1798 when the Navy Department was created, the Revenue-Marine was the only armed maritime service for the United States.

American merchant shipping had been protected by the British Navy, and as a consequence of the Treaty of Paris and the disarmament of the Continental Navy, the United States no longer had any protection for its ships from pirates. The fledgling nation did not have the funds to pay annual tribute to the Barbary states
Barbary Coast
The Barbary Coast, or Barbary, was the term used by Europeans from the 16th until the 19th century to refer to much of the collective land of the Berber people. Today, the terms Maghreb and "Tamazgha" correspond roughly to "Barbary"...

, so their ships were vulnerable for capture after 1785. By 1789, the new Constitution of the United States authorized Congress to create a navy, but during George Washington's first term (1787–1793) little was done to rearm the navy. In 1793, the French Revolutionary Wars
French Revolutionary Wars
The French Revolutionary Wars were a series of major conflicts, from 1792 until 1802, fought between the French Revolutionary government and several European states...

 between Great Britain and France began, and a truce negotiated between Portugal and Algiers
Algiers
' is the capital and largest city of Algeria. According to the 1998 census, the population of the city proper was 1,519,570 and that of the urban agglomeration was 2,135,630. In 2009, the population was about 3,500,000...

 ended Portugal's blockade of the Strait of Gibraltar
Strait of Gibraltar
The Strait of Gibraltar is a narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates Spain in Europe from Morocco in Africa. The name comes from Gibraltar, which in turn originates from the Arabic Jebel Tariq , albeit the Arab name for the Strait is Bab el-Zakat or...

 which had kept the Barbary pirates in the Mediterranean. Soon after, the pirates sailed into the Atlantic, and captured 11 American merchant ships and more than a hundred seamen.

In reaction to the seizure of the American vessels, Congress debated and approved the Naval Act of 1794
Naval Act of 1794
The Act to Provide a Naval Armament, also known as the Naval Act, was passed by the United States Congress on March 27, 1794 and established the country's first naval force, which eventually became the United States Navy...

, which authorized the building of six frigates, four of 44 guns and two of 36 guns. Supporters were mostly from the northern states and the coastal regions, who argued the Navy would result in savings in insurance and ransom payments, while opponents from southern states and inland regions thought a navy was not worth the expense and would drive the United States into more costly wars.

Establishment (1794–1812)

After the passage of the Naval Act of 1794, work began on the construction of the six frigate
Frigate
A frigate is any of several types of warship, the term having been used for ships of various sizes and roles over the last few centuries.In the 17th century, the term was used for any warship built for speed and maneuverability, the description often used being "frigate-built"...

s: , , , , , and . USS Constitution, launched in 1797 and the most famous of the six, was nicknamed "Old Ironsides" (like the earlier ) and, thanks to the efforts of Oliver Wendell Holmes, Sr.
Oliver Wendell Holmes, Sr.
Oliver Wendell Holmes, Sr. was an American physician, professor, lecturer, and author. Regarded by his peers as one of the best writers of the 19th century, he is considered a member of the Fireside Poets. His most famous prose works are the "Breakfast-Table" series, which began with The Autocrat...

, is still in existence today, anchored in Boston
Boston
Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

 harbor. Soon after the bill was passed, Congress authorized $800,000 to obtain a treaty with the Algerians and ransom the captives, triggering an amendment of the Act which would halt the construction of ships if peace was declared. After considerable debate, three of the six frigates were authorized to be completed: United States, Constitution and Constellation. However, the first naval vessel to sail was the , on 24 May 1798.
At the same time, tensions between the US and France developed into the Quasi-War, which originated which the Treaty of Alliance (1778)
Treaty of Alliance (1778)
The Treaty of Alliance, also called The Treaty of Alliance with France, was a defensive alliance between France and the United States of America, formed in the midst of the American Revolutionary War, which promised military support in case of attack by British forces indefinitely into the future...

 that had brought the French into the Revolutionary War. The United States preferred to take a position of neutrality in the conflicts between France and Britain, but this put the nation at odds with both Britain and France. After the Jay Treaty
Jay Treaty
Jay's Treaty, , also known as Jay's Treaty, The British Treaty, and the Treaty of London of 1794, was a treaty between the United States and Great Britain that is credited with averting war,, resolving issues remaining since the Treaty of Paris of 1783, which ended the American Revolution,, and...

 was authorized with Britain in 1794, France began to side against the United States and by 1797 they had seized over 300 American vessels. The newly inaugurated President John Adams took steps to deal with the crisis, working with Congress to finish the three almost-completed frigates, approving funds to build the other three, and attempting to negotiate an agreement similar to the Jay Treaty with France. The XYZ Affair
XYZ Affair
The XYZ Affair was a 1798 diplomatic episode during the administration of John Adams that Americans interpreted as an insult from France. It led to an undeclared naval war called the Quasi-War, which raged at sea from 1798 to 1800...

 originated with a report distributed by Adams where alleged French agents were identified by the letters X, Y, and Z who informed the delegation a bribe must be paid before the diplomats could meet with the foreign minister, and the resulting scandal increased popular support in the country for a war with France. Concerns about the War Department's
United States Department of War
The United States Department of War, also called the War Department , was the United States Cabinet department originally responsible for the operation and maintenance of the United States Army...

 ability to manage a navy led to the creation of the Department of the Navy
United States Department of the Navy
The Department of the Navy of the United States of America was established by an Act of Congress on 30 April 1798, to provide a government organizational structure to the United States Navy and, from 1834 onwards, for the United States Marine Corps, and when directed by the President, of the...

, which was established on 30 April 1798.

The war with France was fought almost entirely at sea, mostly between privateers and merchant ships. The first victory for the United States Navy was on 7 July 1798 when the captured the French privateer Le Croyable
USS Retaliation (1798)
The first USS Retaliation was a French privateer captured and then served in the United States Navy during Quasi-War with France.-Service history:...

, and the first victory over an enemy warship was on 9 February 1799 when the frigate Constellation captured the French frigate L'Insurgente. By the end of 1800, peace with France had been declared, and in 1801, to prevent a second disarmament of the Navy, the outgoing Federalist administration rushed through Congress an act authorizing a peacetime navy for the first time, which limited the navy to six active frigates and seven in ordinary, as well as 45 officers and 150 midshipmen. The remainder of the ships in service were sold and the dismissed officers were given four months pay.

The problems with the Barbary states had never gone away, and on 10 May 1801 the Tripolitans declared war on the United States by chopping down the flag in front of the American Embassy, which began the First Barbary War. The was lost to the Moors, but then blown up by an American raid led by Stephen Decatur
Stephen Decatur
Stephen Decatur, Jr. , was an American naval officer notable for his many naval victories in the early 19th century. He was born on the eastern shore of Maryland, Worcester county, the son of a U.S. Naval Officer who served during the American Revolution. Shortly after attending college Decatur...

. The Marines invaded the "shores of Tripoli
Tripoli
Tripoli is the capital and largest city in Libya. It is also known as Western Tripoli , to distinguish it from Tripoli, Lebanon. It is affectionately called The Mermaid of the Mediterranean , describing its turquoise waters and its whitewashed buildings. Tripoli is a Greek name that means "Three...

" in 1805, capturing the city of Derna, the first time the US flag ever flew over a foreign conquest. This act was enough to induce the Barbary rulers to sign peace treaties. Subsequently the Navy was greatly reduced for reasons of economy, and instead of regular ships many gunboat
Gunboat
A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...

s were built, intended for coastal use only. This policy proved completely ineffective within a decade.

The Royal Navy continued to illegally press
Impressment
Impressment, colloquially, "the Press", was the act of taking men into a navy by force and without notice. It was used by the Royal Navy, beginning in 1664 and during the 18th and early 19th centuries, in wartime, as a means of crewing warships, although legal sanction for the practice goes back to...

 American sailors into the Royal Navy; an estimated 10,000 sailors between 1799 and 1812. In 1807, in the Chesapeake-Leopard Affair, demanded that submit to an inspection, ostensibly looking for British citizens but in reality looking for any suitable sailors to press into the Royal Navy. Leopard severely damaged Chesapeake when she refused. The most violent of many such encounters, the affair further fueled the tensions and in June 1812 the US declared war on Britain.

War of 1812 (1812–1815)

Much of the war was expected to be fought at sea; and within an hour of the announcement of war, the diminutive American navy set forth to do battle with an opponent outnumbering it 50-to-1. After two months, sank
USS Constitution vs HMS Guerriere
The USS Constitution vs HMS Guerriere, was a single ship action between the two ships during the War of 1812. It took place shortly after war had broken out, and would prove to be an important victory for American morale.-Background:...

 ; Guerriere's crew were most dismayed to see their cannonballs bouncing off the Constitution's unusually strong live oak
Live oak
Live oak , also known as the southern live oak, is a normally evergreen oak tree native to the southeastern United States...

 hull, giving her the enduring nickname of "Old Ironsides". On 29 December 1812 Constitution defeated  off the coast of Brazil and Java was burned after the Americans determined she could not be salvaged. On 25 October 1812, the captured HMS Macedonian; after the battle Macedonian was captured and entered into American service. In 1813, commenced a very fruitful raiding venture into the South Pacific, preying upon the British merchant and whaling industry. The Essex was already known for her capture of HMS Alert and a British transport the previous year, and gained further success capturing 15 British merchantmen/whalers, the British finally took action, dispatching and to stop the Essex. After violating Chile's neutrality, the British captured the Essex in the Battle of Valparaíso
Capture of USS Essex
The Battle of Valparaiso, also called the Capture of USS Essex, was a naval action fought during the War of 1812. It took place off Valparaíso, Chile on March 28, 1814, between the frigate and the sloop of the United States Navy and the frigate and sloop of the Royal Navy...

.

The capture of the three British frigates led the British to deploy more vessels on the American seaboard to tighten the blockade. On 1 June 1813, off Boston Harbor
Boston Harbor
Boston Harbor is a natural harbor and estuary of Massachusetts Bay, and is located adjacent to the city of Boston, Massachusetts. It is home to the Port of Boston, a major shipping facility in the northeast.-History:...

, the frigate , commanded by Captain James Lawrence
James Lawrence
James Lawrence was an American naval officer. During the War of 1812, he commanded the USS Chesapeake in a single-ship action against HMS Shannon...

, was captured by the British frigate under Captain Sir Philip Broke
Philip Broke
Rear Admiral Sir Philip Bowes Vere Broke, 1st Baronet KCB was a distinguished officer in the British Royal Navy.-Early life:Broke was born at Broke Hall, Nacton, near Ipswich, the eldest son of Philip Bowes Broke...

. Lawrence was mortally wounded and famously cried out, "Don't give up the ship!". Despite their earlier successes, by 1814 many of the Navy's best ships were blockaded in port and unable to prevent British incursions on land via the sea.

During the summer of 1814, the British fought the Chesapeake Campaign, which was climaxed by amphibious assaults against Washington
Burning of Washington
The Burning of Washington was an armed conflict during the War of 1812 between the United Kingdom of Great Britain and Ireland and the United States of America. On August 24, 1814, led by General Robert Ross, a British force occupied Washington, D.C. and set fire to many public buildings following...

 and Baltimore
Battle of Baltimore
The Battle of Baltimore was a combined sea/land battle fought between British and American forces in the War of 1812. It was one of the turning points of the war as American forces repulsed sea and land invasions of the busy port city of Baltimore, Maryland, and killed the commander of the invading...

. The capital fell to the British almost without a fight, and several ships were burned at the Washington Navy Yard
Washington Navy Yard
The Washington Navy Yard is the former shipyard and ordnance plant of the United States Navy in Southeast Washington, D.C. It is the oldest shore establishment of the U.S. Navy...

, including the 44-gun frigate USS Columbia
USS Columbia
Nine United States Navy ships have been named USS Columbia, after the personification of the United States, also after the city of Columbia, South Carolina....

. At Baltimore, the bombardment by Fort McHenry inspired Francis Scott Key to write The Star-Spangled Banner
The Star-Spangled Banner
"The Star-Spangled Banner" is the national anthem of the United States of America. The lyrics come from "Defence of Fort McHenry", a poem written in 1814 by the 35-year-old lawyer and amateur poet, Francis Scott Key, after witnessing the bombardment of Fort McHenry by the British Royal Navy ships...

, and the hulks blocking the channel prevented the fleet from entering the harbor, and the army reembarked on the ships, ending the battle.

The American naval victories at the Battle of Lake Champlain
Battle of Plattsburgh
The Battle of Plattsburgh, also known as the Battle of Lake Champlain, ended the final invasion of the northern states during the War of 1812...

 and Battle of Lake Erie
Battle of Lake Erie
The Battle of Lake Erie, sometimes called the Battle of Put-in-Bay, was fought on 10 September 1813, in Lake Erie off the coast of Ohio during the War of 1812. Nine vessels of the United States Navy defeated and captured six vessels of Great Britain's Royal Navy...

 halted the final British offensive in the north and helped to deny the British exclusive rights to the Great Lakes in the Treaty of Ghent
Treaty of Ghent
The Treaty of Ghent , signed on 24 December 1814, in Ghent , was the peace treaty that ended the War of 1812 between the United States of America and the United Kingdom of Great Britain and Ireland...

. Shortly before the treaty was signed, the was captured
Capture of USS President
The Capture of USS President was the result of a naval action fought at the end of the Anglo-American War of 1812. The frigate President tried to break out of New York Harbor, but was intercepted by a British squadron of four frigates and was forced to surrender.-Prelude:At the time of the battle...

 by 4 British frigates. Three days after the treaty was signed the Constitution captured  and . The final naval action of the war occurred almost 5 months after the treaty on 30 June 1815 when the sloop captured the East India Company brig Nautilus.

Continental Expansion (1815–1861)

After the war, the Navy's accomplishments paid off in the form of better funding, and it embarked on the construction of many new ships. However, the expense of the larger ships was prohibitive, and many of them stayed in shipyards half-completed, in readiness for another war, until the Age of Sail
Age of Sail
The Age of Sail was the period in which international trade and naval warfare were dominated by sailing ships, lasting from the 16th to the mid 19th century...

 had almost completely passed. The main force of the Navy continued to be large sailing frigates with a number of smaller sloops during the three decades of peace. By the 1840s, the Navy began to adopt steam power and shell guns, but they lagged behind the French and British in adopting the new technologies.

Enlisted sailors during this time included many foreign born men, and native Americans were usually social outcasts who had few other employment options or they were trying to escape punishment for crimes. In 1835, almost 3,000 men sailed with merchant ships out of Boston harbor, but only 90 men were recruited by the Navy. It was unlawful for black men to serve in the Navy, but the shortage of men was so acute this law was frequently broken.
During the War of 1812, the Barbary states took advantage of the weakness of the United States Navy to again capture American merchant ships and sailors. After the Treaty of Ghent was signed, the United States looked at ending the piracy in the Mediterranean which had plagued American merchants for two decades. On 3 March 1815, the US Congress
United States Congress
The United States Congress is the bicameral legislature of the federal government of the United States, consisting of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C....

 authorized deployment of naval power against Algiers, beginning the Second Barbary War. Two powerful squadrons under the command of Commodores Stephen Decatur, Jr. and William Bainbridge
William Bainbridge
William Bainbridge was a Commodore in the United States Navy, notable for his victory over HMS Java during the War of 1812.-Early life:...

, including the 74-gun ships of the line , , and , were dispatched to the Mediterranean. Shortly after departing Gibraltar en route to Algiers, Decatur's squadron encountered the Algerian flagship Meshuda, and, in the Action of 17 June 1815, captured it. Not long afterward, the American squadron likewise captured the Algerian brig
Brig
A brig is a sailing vessel with two square-rigged masts. During the Age of Sail, brigs were seen as fast and manoeuvrable and were used as both naval warships and merchant vessels. They were especially popular in the 18th and early 19th centuries...

 Estedio in the Battle off Cape Palos
Battle off Cape Palos
The Battle off Cape Palos was the last battle of the Second Barbary War. The battle began when an American squadron under Stephen Decatur attacked and captured an Algerian brig.-Background:...

. By June, the squadrons had reached Algiers and peace was negotiated with the Dey, including a return of captured vessels and men, a guarantee of no further tributes and a right to trade in the region.

Piracy in the Caribbean sea was also a major problem, and between 1815 and 1822 an estimated 3000 ships were captured by pirates. In 1819, Congress authorized President James Madison to deal with this threat, and since many of the pirates were privateers of the newly independent states of Latin America, he decided to embark on a strategy of diplomacy backed up by the guns of the Navy. An agreement with Venezuela was reached in 1819, but ships were still regularly captured until a military campaign by the West India Squadron, under the command of David Porter
David Porter (naval officer)
David Porter was an officer in the United States Navy in a rank of commodore and later the commander-in-chief of the Mexican Navy.-Life:...

, used a combination of large frigates escorting merchant ships backed by many small craft searching small coves and islands, and capturing pirate vessels. During this campaign the becomes first steam-powered ship to see combat action. Although isolated instances of piracy continued into the 1830s, by 1826 the frequent attacks had ended and the region was declared free for commerce.

Another international problem was the slave trade, and the African squadron was formed in 1820 to deal with this threat. Politically, the suppression of the slave trade was unpopular, and the squadron was withdrawn in 1823 ostensibly to deal with piracy in the Caribbean, but did not return to the African coast until the passage of the Webster–Ashburton treaty with Britain in 1842. After the treaty was passed, the United States used fewer ships than the treaty required, ordered the ships based far from the coast of Africa, and used ships that were too large to operate close to shore. Between 1845 and 1850, the United States Navy captured only 10 slave vessels, while the British captured 423 vessels carrying 27,000 captives.

Congress formally authorized the establishment of the United States Military Academy
United States Military Academy
The United States Military Academy at West Point is a four-year coeducational federal service academy located at West Point, New York. The academy sits on scenic high ground overlooking the Hudson River, north of New York City...

 in 1802, but it took almost 50 years to approve a similar school for naval officers. During the long period of peace between 1815 and 1846 midshipmen had few opportunities for promotion, and their warrants were often obtained via patronage. The poor quality of officer training in the US Navy became visible after the Somers Affair, an alleged mutiny
Mutiny
Mutiny is a conspiracy among members of a group of similarly situated individuals to openly oppose, change or overthrow an authority to which they are subject...

 aboard the training ship in 1842, and the subsequent execution of midshipman Philip Spencer
Philip Spencer
Philip Spencer , a midshipman aboard the USS Somers, was hanged for mutiny without a lawful court-martial. He was the son of John C. Spencer, Secretary of War in U.S. President John Tyler's administration, and the grandson of Ambrose Spencer, a New York politician and lawyer.-Background:Spencer was...

. George Bancroft
George Bancroft
George Bancroft was an American historian and statesman who was prominent in promoting secondary education both in his home state and at the national level. During his tenure as U.S. Secretary of the Navy, he established the United States Naval Academy at Annapolis in 1845...

, appointed Secretary of the Navy in 1845, decided to work outside of congressional approval and create a new academy for officers. He formed a council led by Commodore Perry to create a new system for training officers, and turned the old Fort Severn
Fort Severn
For the trading post in Canada see Fort Severn First Nation Fort Severn, in present-day Annapolis, Maryland, was built in 1808 on the same site as an earlier American Revolutionary War fort of 1776. Although intended to guard Annapolis harbor from British attack, it never saw action during the War...

 at Annapolis into a new institution in 1845 which would be designated as the United States Naval Academy
United States Naval Academy
The United States Naval Academy is a four-year coeducational federal service academy located in Annapolis, Maryland, United States...

 by Congress in 1851.
Naval forces participated in the effort to forcibly move the Seminole Indians from Florida to a reservation west of the Mississippi. After a massacre of army soldiers near Tampa on 28 December 1835, marines and sailors were added to the forces which fought the Second Seminole War
Second Seminole War
The Second Seminole War, also known as the Florida War, was a conflict from 1835 to 1842 in Florida between various groups of Native Americans collectively known as Seminoles and the United States, part of a series of conflicts called the Seminole Wars...

 from 1836 until 1842. A "mosquito fleet" was formed in the Everglades out of various small craft to transport a mixture of army and navy personnel to pursue the Seminoles into the swamps. About 1,500 soldiers were killed during the conflict, some Seminoles agreed to move but a small group of Seminoles remained in control of the Everglades and the area around Lake Okeechobee.

The Navy played a role in two major operations of the Mexican-American War (1845–1848); during the Battle of Veracruz, it transported the invasion force that captured Veracruz by landing 12,000 troops and their equipment in one day; leading eventually to the capture of Mexico City, and the end of the war. Its Pacific Squadron
Pacific Squadron
The Pacific Squadron was part of the United States Navy squadron stationed in the Pacific Ocean in the 19th and early 20th centuries. Initially with no United States ports in the Pacific, they operated out of storeships which provided naval supplies and purchased food and obtained water from local...

's ships facilitated the capture of California.

In 1853 Commodore
Commodore (USN)
Commodore was an early title and later a rank in the United States Navy and United States Coast Guard and a current honorary title in the U.S. Navy with an intricate history. Because the U.S. Congress was originally unwilling to authorize more than four ranks until 1862, considerable importance...

 Matthew Perry
Matthew Perry (naval officer)
Matthew Calbraith Perry was the Commodore of the U.S. Navy and served commanding a number of US naval ships. He served several wars, most notably in the Mexican-American War and the War of 1812. He played a leading role in the opening of Japan to the West with the Convention of Kanagawa in 1854...

 lead the Perry Expedition, a squadron of four ships which sailed to Japan to establish normal relations with Japan. Perry's two technologically advanced steam-powered ships and calm, firm diplomacy convinced Japan to end three centuries of isolation and sign Treaty of Kanagawa
Convention of Kanagawa
On March 31, 1854, the or was concluded between Commodore Matthew C. Perry of the U.S. Navy and the Tokugawa shogunate.-Treaty of Peace and Amity :...

 with the US in 1854. Nominally a treaty of friendship, the agreement soon paved the way for the opening of Japan and normal trade relations with the United States and Europe.

American Civil War (1861–1865)

Between the beginning of the war and the end of 1861, 373 commissioned officers, warrant officers, and midshipmen resigned or were dismissed from the United States Navy and went on to serve the Confederacy. On 20 April 1861, the Union burned its ships that were at the Norfolk Navy Yard to prevent their capture by the Confederates
Confederate States of America
The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

, but not all of the ships were completely destroyed. The screw frigate was so hastily scuttled that her hull and steam engine were basically intact, which gave the South's Stephen Mallory
Stephen Mallory
Stephen Russell Mallory served in the United States Senate as, Senator from Florida from 1850 to the secession of his home state and the outbreak of the American Civil War. For much of that period, he was chairman of the Committee on Naval Affairs...

 the idea of raising her and then armoring the upper sides with iron plate. The resulting ship was named CSS Virginia
CSS Virginia
CSS Virginia was the first steam-powered ironclad warship of the Confederate States Navy, built during the first year of the American Civil War; she was constructed as a casemate ironclad using the raised and cut down original lower hull and steam engines of the scuttled . Virginia was one of the...

. Meanwhile, John Ericsson
John Ericsson
John Ericsson was a Swedish-American inventor and mechanical engineer, as was his brother Nils Ericson. He was born at Långbanshyttan in Värmland, Sweden, but primarily came to be active in England and the United States...

 had similar ideas, and received funding to build USS Monitor
USS Monitor
USS Monitor was the first ironclad warship commissioned by the United States Navy during the American Civil War. She is most famous for her participation in the Battle of Hampton Roads on March 9, 1862, the first-ever battle fought between two ironclads...

.

Winfield Scott
Winfield Scott
Winfield Scott was a United States Army general, and unsuccessful presidential candidate of the Whig Party in 1852....

, the commanding general of the US Army at the beginning of the war, devised the Anaconda Plan
Anaconda Plan
The Anaconda Plan or Scott's Great Snake is the name widely applied to an outline strategy for subduing the seceding states in the American Civil War. Proposed by General-in-Chief Winfield Scott, the plan emphasized the blockade of the Southern ports, and called for an advance down the Mississippi...

 to win the war with as little bloodshed as possible. His idea was that a Union blockade of the main ports would weaken the Confederate economy; then the capture of the Mississippi River
Mississippi River
The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 would split the South. Lincoln adopted the plan in terms of a blockade to squeeze to death the Confederate economy, but overruled Scott's warnings that his new army was not ready for an offensive operation because public opinion demanded an immediate attack.

On 8 March 1862, the Confederate Navy initiated the first combat between ironclads
Ironclad warship
An ironclad was a steam-propelled warship in the early part of the second half of the 19th century, protected by iron or steel armor plates. The ironclad was developed as a result of the vulnerability of wooden warships to explosive or incendiary shells. The first ironclad battleship, La Gloire,...

 when the Virginia successfully attacked the blockade. The next day, the Monitor engaged the Virginia in the Battle of Hampton Roads
Battle of Hampton Roads
The Battle of Hampton Roads, often referred to as either the Battle of the Monitor and Merrimack or the Battle of Ironclads, was the most noted and arguably most important naval battle of the American Civil War from the standpoint of the development of navies...

. Their battle ended in a draw, and the Confederacy later lost the Virginia when the ship was scuttled to prevent capture. The Monitor was the prototype for the Monitor warship
Monitor (warship)
A monitor was a class of relatively small warship which was neither fast nor strongly armoured but carried disproportionately large guns. They were used by some navies from the 1860s until the end of World War II, and saw their final use by the United States Navy during the Vietnam War.The monitors...

 and many more were built by the Union Navy. While the Confederacy built more ironclad ships during the war, they lacked the ability to build or purchase ships that could effectively counter the monitors.

Along with ironclad ships, the new technologies of naval mines, which were known as torpedoes after the torpedo eel
Torpedo (genus)
Torpedo is a genus of rays, commonly known as electric rays, torpedo rays, or torpedoes. It is the sole genus of the family Torpedinidae. They are slow-moving bottom-dwellers capable of generating electricity as a defense and feeding mechanism...

 and submarine warfare were introduced during the war by the Confederacy. During the Battle of Mobile Bay
Battle of Mobile Bay
The Battle of Mobile Bay of August 5, 1864, was an engagement of the American Civil War in which a Federal fleet commanded by Rear Adm. David G. Farragut, assisted by a contingent of soldiers, attacked a smaller Confederate fleet led by Adm...

, mines were used to protect the harbor and sank the Union monitor . After Tecumseh sank, Admiral David G. Farragut famously said, "Damn the torpedoes, full speed ahead!". The forerunner of the modern submarine, CSS David
CSS David
CSS David was a Civil War-era torpedo boat built as a private venture by T. Stoney at Charleston, South Carolina in 1863, and put under the control of the Confederate States Navy. The cigar-shaped boat carried a 60- or 70-pound explosive charge on the end of a spar projecting forward from her bow...

, attacked the USS New Ironsides using a spar torpedo
Spar torpedo
A spar torpedo is a weapon consisting of a bomb placed at the end of a long pole, or spar, and attached to a boat. The weapon is used by running the end of the spar into the enemy ship. Spar torpedoes were often equipped with a barbed spear at the end, so it would stick to wooden hulls...

. The Union ship was barely damaged and the resulting geyser of water put out the fires in the submarine's boiler. Another submarine, the CSS H. L. Hunley, was designed to dive and surface but ultimately did not work well and sank on five occasions during trials. In action against the the submarine successfully sank its target but was lost by the same explosion.

The Confederate States of America
Confederate States of America
The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

 operated a number of commerce raiders and blockade runner
Blockade runner
A blockade runner is usually a lighter weight ship used for evading a naval blockade of a port or strait, as opposed to confronting the blockaders to break the blockade. Very often blockade running is done in order to transport cargo, for example to bring food or arms to a blockaded city...

s, CSS Alabama
CSS Alabama
CSS Alabama was a screw sloop-of-war built for the Confederate States Navy at Birkenhead, United Kingdom, in 1862 by John Laird Sons and Company. Alabama served as a commerce raider, attacking Union merchant and naval ships over the course of her two-year career, during which she never anchored in...

 being the most famous, and British investors built small, fast blockade runners that traded arms and luxuries brought in from Bermuda
Bermuda
Bermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...

, Cuba, and The Bahamas
The Bahamas
The Bahamas , officially the Commonwealth of the Bahamas, is a nation consisting of 29 islands, 661 cays, and 2,387 islets . It is located in the Atlantic Ocean north of Cuba and Hispaniola , northwest of the Turks and Caicos Islands, and southeast of the United States...

 in return for high-priced cotton and tobacco. When the Union Navy seized a blockade runner the ship and cargo were sold and the proceeds given to the Navy sailors; the captured crewmen were mostly British and they were simply released.

The blockade of the South caused the Southern economy to collapse during the war. Shortages of food and supplies were caused by the blockade, the failure of Southern railroads, the loss of control of the main rivers, and foraging by Union and Confederate armies. The standard of living fell even as large-scale printing of paper money caused inflation and distrust of the currency. By 1864 the internal food distribution had broken down, leaving cities without enough food and causing food riots across the Confederacy. The Union victory at the Second Battle of Fort Fisher
Second Battle of Fort Fisher
The Second Battle of Fort Fisher was a joint assault by Union Army and naval forces against Fort Fisher, outside Wilmington, North Carolina, near the end of the American Civil War...

 in January 1865 closed the last useful Southern port, virtually ending blockade running and hastening the end of the war.

Decline of the Navy (1865–1882)

After the war, the Navy went into a period of decline. In 1864, the Navy had 51,500 men in uniform, and almost 700 ships and about 60 monitor
Monitor (warship)
A monitor was a class of relatively small warship which was neither fast nor strongly armoured but carried disproportionately large guns. They were used by some navies from the 1860s until the end of World War II, and saw their final use by the United States Navy during the Vietnam War.The monitors...

-type coastal ironclads which made the US Navy the second largest in the world compared with the Royal Navy. By 1880 the Navy only had 48 ships in commission, 6,000 men, and the ships and shore facilities were decrepit but Congress saw no need to spend money to improve them. The Navy was unprepared to fight a major maritime war before 1897.

In 1871, an expedition of five warships commanded by Rear Admiral John Rodgers
John Rodgers (naval officer, Civil War)
John Rodgers was an admiral in the United States Navy.-Early life and career:Rodgers, a son of Commodore John Rodgers, was born near Havre de Grace, Maryland. He received his appointment as a Midshipman in the Navy on 18 April 1828...

 was sent to Korea to obtain an apology for the murders of several shipwrecked American sailors and secure a treaty to protect shipwrecked foreigners in the future. After a small skirmish, Rodgers launched an amphibious assault of approximately 650 men on the forts protecting Seoul. Despite capturing the forts, the Koreans refused to negotiate, and the expedition was forced to leave before the start of typhoon season. Nine sailors and six marines received Medals of Honor
Medal of Honor
The Medal of Honor is the highest military decoration awarded by the United States government. It is bestowed by the President, in the name of Congress, upon members of the United States Armed Forces who distinguish themselves through "conspicuous gallantry and intrepidity at the risk of his or her...

 for their acts of heroism during the Korean campaign; the first for actions in a foreign conflict.

By the 1870s most of the ironclads from the Civil War were laid up in reserve, leaving the United States virtually without an ironclad fleet. When the Virginius affair
Virginius Affair
The Virginius Affair was a diplomatic dispute that occurred in the 1870s between the United States, the United Kingdom and Spain, then in control of Cuba, during the Ten Years' War....

 first broke out in 1873, a Spanish ironclad happened to be anchored in New York Harbor
New York Harbor
New York Harbor refers to the waterways of the estuary near the mouth of the Hudson River that empty into New York Bay. It is one of the largest natural harbors in the world. Although the U.S. Board of Geographic Names does not use the term, New York Harbor has important historical, governmental,...

, leading to the uncomfortable realization on the part of the US Navy that it had no ship capable of defeating such a vessel. The Navy hastily issued contracts for the construction of five new ironclads, and accelerated its existing repair program for several more. and the four s were subsequently built as a result of the Virginius war scare. All five vessels would later take part in the Spanish-American War
Spanish-American War
The Spanish–American War was a conflict in 1898 between Spain and the United States, effectively the result of American intervention in the ongoing Cuban War of Independence...

 of 1898.

By the time the Garfield administration assumed office in 1881, the Navy's condition had deteriorated still further. A review conducted on behalf of the new Secretary of the Navy, William H. Hunt
William H. Hunt
William Henry Hunt was the United States Secretary of the Navy under President James Garfield and briefly under President Chester A. Arthur.-Biography:...

, found that of 140 vessels on the Navy's active list, only 52 were in an operational state, of which a mere 17 were iron-hulled ships, including 14 ageing Civil War era ironclads. Hunt recognized the necessity of modernizing the Navy, and set up an informal advisory board to make recommendations. Also to be expected, morale was considerably down; officers and sailors in foreign ports were all too aware that their old wooden ships would not survive long in the event of war. The limitations of the monitor type effectively prevented the United States from projecting power overseas, and until the 1890s the United States would have come off badly in a conflict with even Spain or the Latin American powers.

Rebuilding (1882–1898)

In 1882, on the recommendation of an advisory panel, the Navy Secretary
United States Secretary of the Navy
The Secretary of the Navy of the United States of America is the head of the Department of the Navy, a component organization of the Department of Defense...

 William H. Hunt requested funds from Congress to construct modern ships. The request was rejected initially, but in 1883 Congress authorized the construction of three protected cruisers, the , , and , and the dispatch vessel , together known as the ABCD ships. In 1885, two more protected cruisers, and which was the last American cruiser to be fitted with a sal rig, were authorized. Congress also authorized the construction of the first battleship
Battleship
A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...

s in the Navy, and . The ABCD ships proved to be excellent vessels, and the three cruisers were organized into the Squadron of Evolution
Squadron of Evolution
The Squadron of Evolution " —sometimes referred to as the "White Squadron"— was a transitional unit in the United States Navy, during the late 19th century. Composed of the cruisers , , , USS Yorktown, and dispatch boat . Having both full rigged masts and steam engines, it was influential in the...

, popularly known as the White Squadron because of the color of the hulls, which was used to train a generation of officers and men.

Alfred Thayer Mahan
Alfred Thayer Mahan
Alfred Thayer Mahan was a United States Navy flag officer, geostrategist, and historian, who has been called "the most important American strategist of the nineteenth century." His concept of "sea power" was based on the idea that countries with greater naval power will have greater worldwide...

's book The Influence of Sea Power upon History, 1660–1783
The Influence of Sea Power upon History
The Influence of Sea Power Upon History: 1660-1783 is a history of naval warfare written in 1890 by Alfred Thayer Mahan. It details the role of sea power throughout history and discusses the various factors needed to support and achieve sea power, with emphasis on having the largest and most...

, published in 1890, was very influential in justifying the naval program to the civilian government and to the general public. With the closing of the frontier, some Americans began to look outwards, to the Caribbean, to Hawaii and the Pacific, and with the doctrine of Manifest Destiny
Manifest Destiny
Manifest Destiny was the 19th century American belief that the United States was destined to expand across the continent. It was used by Democrat-Republicans in the 1840s to justify the war with Mexico; the concept was denounced by Whigs, and fell into disuse after the mid-19th century.Advocates of...

 as philosophical justification, many saw the Navy as an essential part of realizing that doctrine beyond the limits of the American continent.

In 1890, Mahan's doctrine influenced Navy Secretary Benjamin F. Tracy
Benjamin F. Tracy
Benjamin Franklin Tracy was a United States political figure who served as Secretary of the Navy from 1889 through 1893, during the administration of U.S. President Benjamin Harrison.-Biography:...

 to propose the United States start building no less than 200 ships of all types, but Congress rejected the proposal. Instead, the Navy Act of 1890 authorized building three battleships, , , and , followed by . By the turn of the century, two s and three s were completed or under construction, which brought the US Navy from twelfth place in 1870 to fifth place among the world's navies.

Spanish–American War (1898)

The United States was interested in purchasing colonies from Spain, specifically Cuba, but Spain refused. Newspapers wrote stories, many which were fabricated, about atrocities committed in Spanish colonies which raised tensions between the two countries. A riot gave the United States an excuse to send the to Cuba, and the subsequent explosion of Maine in Havana Harbor
Havana Harbor
Havana Harbor is the port of Havana, the capital of Cuba, and it is the main port in Cuba . Most vessels coming to the island make port in Havana...

 increased popular support for war with Spain. The cause of the explosion was investigated by a board of inquiry, which in March 1898 came to the conclusion the explosion was caused by a sea mine, and there was pressure from the public to blame Spain for sinking the ship. However, later investigations pointed to an internal explosion in one of the magazines caused by heat from a fire in the adjacent coal bunker.

Assistant Navy secretary Theodore Roosevelt
Theodore Roosevelt
Theodore "Teddy" Roosevelt was the 26th President of the United States . He is noted for his exuberant personality, range of interests and achievements, and his leadership of the Progressive Movement, as well as his "cowboy" persona and robust masculinity...

 quietly positioned the Navy for attack before the Spanish–American War was declared in April 1898. The Asiatic Squadron
Asiatic Squadron
The Asiatic Squadron was a squadron of United States Navy warships stationed in East Asia during the latter half of the 19th century, it was created in 1868 when the East India Squadron was disbanded...

, under the command of George Dewey
George Dewey
George Dewey was an admiral of the United States Navy. He is best known for his victory at the Battle of Manila Bay during the Spanish-American War...

, immediately left Hong Kong for the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

, attacking and decisively defeating the Spanish fleet in the Battle of Manila Bay. A few weeks later, the North Atlantic Squadron
North Atlantic Squadron
The North Atlantic Squadron was a section of the United States Navy operating in the North Atlantic. It was renamed as the North Atlantic Fleet in 1902. In 1905 the European and South Atlantic Squadrons were abolished and absorbed into the North Atlantic Fleet. On Jan...

 destroyed the majority of heavy Spanish naval units in the Caribbean in the Battle of Santiago de Cuba
Battle of Santiago de Cuba
The Battle of Santiago de Cuba, fought between Spain and the United States on 3 July 1898, was the largest naval engagement of the Spanish-American War and resulted in the destruction of the Spanish Navy's Caribbean Squadron.-Spanish Fleet:...

.

The Navy's experience in this war was both encouraging, in that it had won, and cautionary, in that the enemy had one of the weakest of the worlds' modern fleets, and that the Manila Bay attack was extremely risky; if the American ships had been severely damaged or had run out of supplies, they were 7,000 miles from the nearest American harbor. This realization would have a profound effect on Navy strategy, and, indeed, American foreign policy, in the next several decades.

Rise of the Modern Navy (1898–1914)

Fortunately for the New Navy, its most ardent political supporter, Theodore Roosevelt
Theodore Roosevelt
Theodore "Teddy" Roosevelt was the 26th President of the United States . He is noted for his exuberant personality, range of interests and achievements, and his leadership of the Progressive Movement, as well as his "cowboy" persona and robust masculinity...

, became President in 1901. Under his administration, the Navy went from the sixth largest in the world to second only to the Royal Navy. Theodore Roosevelt's administration became involved in the politics of the Caribbean and Central America, with interventions in 1901, 1902, 1903, and 1906. At a speech in 1901, Roosevelt said, "Speak softly and carry a big stick, you will go far", which was a cornerstone of diplomacy during his presidency.

Roosevelt believed that a US-controlled canal across Central America was a vital strategic interest to the U.S Navy, because it would significantly shorten travel times for ships between the two coasts. Roosevelt was able to reverse a decision in favor of a Nicaraguan Canal and instead moved to purchase the failed French effort across the Isthmus of Panama
Isthmus of Panama
The Isthmus of Panama, also historically known as the Isthmus of Darien, is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America. It contains the country of Panama and the Panama Canal...

. The isthmus was controlled by Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

, and in early 1903, the Hay-Herran Treaty
Hay-Herran Treaty
The Hay–Herran Treaty was a treaty signed on January 22, 1903 between United States Secretary of State John M. Hay of the United States and Dr. Tomás Herrán of Colombia...

 was signed by both nations to give control of the canal to the United States. After the Colombian Senate failed to ratify the treaty, Roosevelt implied to Panamanian rebels that if they revolted, the US Navy would assist their cause for independence. Panama proceeded to proclaim its independence on 3 November 1903, and the USS Nashville
USS Nashville (PG-7)
USS Nashville , a gunboat, was the only ship of its class. It was the third ship of the United States Navy to hold the name Nashville....

 impeded any interference from Colombia. The victorious Panamanians allowed the United States control of the Panama Canal Zone
Panama Canal Zone
The Panama Canal Zone was a unorganized U.S. territory located within the Republic of Panama, consisting of the Panama Canal and an area generally extending 5 miles on each side of the centerline, but excluding Panama City and Colón, which otherwise would have been partly within the limits of...

 on 23 February 1904, for US$10 million. The naval base at Guantanamo Bay, Cuba
Guantanamo Bay Naval Base
Guantanamo Bay Naval Base is located on of land and water at Guantánamo Bay, Cuba which the United States leased for use as a coaling station following the Cuban-American Treaty of 1903. The base is located on the shore of Guantánamo Bay at the southeastern end of Cuba. It is the oldest overseas...

 was built in 1905 to protect the canal.

The latest technological innovation of the time, submarines, were developed in the state of New Jersey by an Irish-American inventor, John Philip Holland
John Philip Holland
John Philip Holland was an Irish engineer who developed the first submarine to be formally commissioned by the U.S...

. His submarine, the was officially commissioned into US Navy service in the fall of 1900. The Russo-Japanese War
Russo-Japanese War
The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival imperial ambitions of the Russian Empire and Japanese Empire over Manchuria and Korea...

 of 1905 and the launching of in the following year lent impetus to the construction program. At the end of 1907 Roosevelt had sixteen new battleships to make up his Great White Fleet, which he sent on a cruise around the world. While nominally peaceful, and a valuable training exercise for the rapidly expanding Navy, it was also useful politically as a demonstration of United States power and capabilities; at every port, the politicians and naval officers of both potential allies and enemies were welcomed on board and given tours. The cruise had the desired effect, and American power was subsequently taken more seriously.

The voyage taught the Navy more fueling stations were needed around the world, and the strategic potential of the Panama Canal, which was completed in 1914. The Great White Fleet required almost 50 coaling ships, and during the cruise most of the fleet's coal was purchased from the British, who could deny access to fuel during a military crisis as they did with Russia during the Russo-Japanese War
Russo-Japanese War
The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival imperial ambitions of the Russian Empire and Japanese Empire over Manchuria and Korea...

.

World War I (1914–1918)

When United States agents discovered that the German merchant ship Ypiranga was carrying illegal arms to Mexico, President Wilson ordered the Navy to stop the ship from docking at the port of Veracruz, which became known as the Ypiranga incident
Ypiranga incident
The Ypiranga Incident occurred on April 21, 1914, at the port of Veracruz in Mexico. The SS Ypiranga was a German steamer that was commissioned to transport arms and munitions to the Mexican federal government under Victoriano Huerta...

. On 21 April 1914, a naval brigade of marines and sailors occupied Veracruz, and afterwards a total of 55 Medals of Honor were awarded for acts of heroism at Veracruz, the largest number ever granted for a single action. After Veracruz was occupied, the ABC Powers
ABC countries
ABC countries, or ABC Powers, is a term sometimes used to describe the South American countries of Argentina, Brazil and Chile, which are seen as three of the most powerful and wealthy countries in South America...

 arbitrated the differences between the US and Mexico. Ultimately, the United States troops left Mexican soil and Ypiranga unloaded her arms.

Despite US declarations of neutrality and German accountability for its unrestricted submarine warfare, in 1915 Gulflight
Gulflight
The American 5,189 ton tanker Gulflight, was built by the New York Shipbuilding Co. of Camden, New Jersey for the Gulf Refining Company . It was launched on 8 August 1914. The ship became famous when it was torpedoed early in World War I and became the center of a diplomatic incident which moved...

and more famously Lusitania
RMS Lusitania
RMS Lusitania was a British ocean liner designed by Leonard Peskett and built by John Brown and Company of Clydebank, Scotland. The ship entered passenger service with the Cunard Line on 26 August 1907 and continued on the line's heavily-traveled passenger service between Liverpool, England and New...

were sunk. The United States' reaction was to contemplate increased funding for the Navy, although the Naval Act of 1916
Naval Act of 1916
The Naval Act of 1916 was also called the "Big Navy Act." An overlooked landmark piece of legislation, President Woodrow Wilson determined amidst the repeated incidents with Germany to build “incomparably, the greatest Navy in the world” over a ten year period with the intent of making the U.S....

 went through six months of debate in Congress before being passed. The Act authorized a $500 million construction program over three years for 10 battleships, 6 battlecruisers, 10 scout cruisers, 50 destroyers and 67 submarines. By the end of the war 273 destroyer
Destroyer
In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

s had been ordered to counter the submarine threat; most were finished after World War I ended but many served in World War II.

When the United States entered World War I in 1917, the Navy's role was mostly limited to convoy
Convoy
A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support, though it may also be used in a non-military sense, for example when driving through remote areas.-Age of Sail:Naval...

 escort and troop transport and the laying of a minefield
Naval mine
A naval mine is a self-contained explosive device placed in water to destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, an enemy vessel...

 across the North Sea
North Sea
In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

. The United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 sent a battleship group
United States Battleship Division Nine (World War I)
United States Battleship Division Nine was a division of four, later five, dreadnought battleships of the United States Navy's Atlantic Fleet that constituted the American contribution to the British Grand Fleet during World War I. Although the U.S. entered the war on 6 April 1917, hesitation among...

 to Scapa Flow
Scapa Flow
right|thumb|Scapa Flow viewed from its eastern endScapa Flow is a body of water in the Orkney Islands, Scotland, United Kingdom, sheltered by the islands of Mainland, Graemsay, Burray, South Ronaldsay and Hoy. It is about...

 to join with the British Grand Fleet
British Grand Fleet
The Grand Fleet was the main fleet of the British Royal Navy during the First World War.-History:It was formed in 1914 by the British Atlantic Fleet combined with the Home Fleet and it included 35-40 state-of-the-art capital ships. It was initially commanded by Admiral Sir John Jellicoe...

, destroyers to Queenstown
Cobh
Cobh is a seaport town on the south coast of County Cork, Ireland. Cobh is on the south side of Great Island in Cork Harbour. Facing the town are Spike Island and Haulbowline Island...

, Ireland and submarines to help guard convoys. Several regiments of Marines were also dispatched to France. The first victory for the Navy in the war occurs on 17 November 1917 when the and sink the German U-boat U-58
Action of 17 November 1917
The Action of 17 November 1917 was a naval battle of the First World War. The action was fought between a German U-boat and two United States Navy destroyers in the North Atlantic Ocean.-Action:...

. During World War I, the Navy was the first branch of the United States armed forces to allow enlistment by women in a non-nursing capacity, as Yeoman (F)
Yeoman (F)
Yeoman was a rank in the U.S. Naval Reserve in World War I. The first Yeoman was Loretta Perfectus Walsh. At the time, the women were popularly referred to as "yeomanettes" or even "yeowomen", although the official designation was Yeoman ....

.

Inter-war entrenchment and expansion (1918–1941)

At the end of World War I, the United States Navy had almost 500,000 officers and enlisted men and women and in terms of personnel was the largest in the world. After a short period of demobilization, the nations of the globe began rebuilding armaments at a tremendous rate, in preparation for the next war; but widespread revulsion at the prospect of further carnage led to the Washington Naval Conference of 1921 and its results, the Nine-Power Treaty
Nine-Power Treaty
The ' or Nine Power Agreement(Chinese:九國公約) was a treaty affirming the sovereignty and territorial integrity of China as per the Open Door Policy, signed by all of the attendees to the Washington Naval Conference on 6 February 1922....

, the Treaty for the Limitation of Naval Armament
Treaty for the Limitation of Naval Armament
The Limitation of Naval Armament included many separate treaties. In general, the treaties involved the United States, United Kingdom, Japan, Italy and France....

, and limitations on the use of submarines and poison gas. The naval limitation treaty prescribed a ratio of 5:5:3:1:1 for capital ships between treaty nations. The treaty recognized the US Navy as being equal to the Royal Navy with 525,000 tons of capital ships and 135,000 tons of aircraft carriers. Many ships were scrapped by the five nations to meet the treaty limitations.

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

s and aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s. The United States's first carrier, a converted collier
Collier (ship type)
Collier is a historical term used to describe a bulk cargo ship designed to carry coal, especially for naval use by coal-fired warships. In the late 18th century a number of wooden-hulled sailing colliers gained fame after being adapted for use in voyages of exploration in the South Pacific, for...

 named was commissioned in 1922, and soon joined by and , which had been planned to be battlecruiser
Battlecruiser
Battlecruisers were large capital ships built in the first half of the 20th century. They were developed in the first decade of the century as the successor to the armoured cruiser, but their evolution was more closely linked to that of the dreadnought battleship...

s until the treaty forbade it. Organizationally, the Bureau of Aeronautics
Bureau of Aeronautics
The Bureau of Aeronautics was the U.S. Navy's material-support organization for Naval Aviation from 1921 to 1959. The bureau had "cognizance" for the design, procurement, and support of Naval aircraft and related systems...

 was formed in 1921; naval aviators would become referred to as members of the United States Naval Air Corps
United States Naval Air Corps
The United States Naval Air Corps was a term denoting the portion of the United States Navy made up of United States Naval Aviators. The term was especially in use before and during World War II....

.

Rivalries continued to simmer, and an additional conference in 1927 failed to agree on limitations to the loopholes that navies were busy exploiting. But the financial crash of 1929 encouraged governments to save money by not building ships, and in 1930 the London Naval Conference
London Naval Conference
There were three major international naval conferences in London, the first in 1908-09, the second in 1930 and the third in 1935. The latter two, together with the Washington Naval Conference in 1921-22 and the Geneva Conferences , resulted in agreements between the major powers on navy vessel...

 produced the London Naval Treaty, which improved Anglo-American relations, but whose results were soon overshadowed by the nationalist movements that were taking control of countries around the globe.

The Vinson-Trammell Act of 1934 set up a regular program of ship building and modernization to bring the Navy to the maximum size allowed by treaty. The Navy's preparation was helped along by another Navy assistant secretary turned president, Franklin D. Roosevelt. The naval limitation treaties also applied to bases, but Congress only approved building seaplane bases on Wake Island
Wake Island
Wake Island is a coral atoll having a coastline of in the North Pacific Ocean, located about two-thirds of the way from Honolulu west to Guam east. It is an unorganized, unincorporated territory of the United States, administered by the Office of Insular Affairs, U.S. Department of the Interior...

, Midway Island and Dutch Harbor and rejected any additional funds for bases on Guam and the Philippines. Navy ships were designed with greater endurance and range which to allowed them to operate further from bases and between refits.

The Navy had a presence in the Far East with a naval base in the Philippines and river gunboats on the Yangtze River. The gunboat was bombed and machine gunned by Japanese airplanes, together with the HMS Bee, as she lay off Nanking in 1937. This would, in effect, be the opening shot in the Pacific War, but at the time it was viewed as ongoing strife in China going back to 1927. Nanking was devastated in the same raid.

African-Americans were enlisted during World War I, but this was halted in 1919 and they were mustered out of the Navy. Starting in 1930s a few were recruited to serve as servants for officers and were rigidly segregated aboard ships as mess attendants. African-Americans were recruited in larger numbers only after the attack on Pearl Harbor.

The Naval Act of 1936 authorized the first new battleship since 1921, and , was laid down in October 1937. The Second Vinson Act
Second Vinson Act
The Second Vinson Act was an Act of Congress, passed in May 1938, which "mandated a 20% increase in strength of the United States Navy". The act was sponsored by Carl Vinson, a Democratic Congressman from Georgia who was...

 authorized a 20% increase in the size of the Navy and , and in June 1940 the Two-Ocean Navy Act
Two-Ocean Navy Act
The Two-Ocean Navy Act, was an American Act of Congress passed on July 19, 1940, to increase the size of the United States Navy by 70%, making it the largest naval procurement bill in U.S...

 authorized an 11% expansion in the Navy, and Chief of Naval Operations
Chief of Naval Operations
The Chief of Naval Operations is a statutory office held by a four-star admiral in the United States Navy, and is the most senior uniformed officer assigned to serve in the Department of the Navy. The office is a military adviser and deputy to the Secretary of the Navy...

 Harold Rainsford Stark
Harold Rainsford Stark
Harold Rainsford Stark served as an officer in the United States Navy during World War I and World War II. Stark was the US Navy's 8th Chief of Naval Operations, from August 1, 1939 to 26 March 1942....

 asked for another 70% increase, amounting to about 200 additional ships, which was authorized by Congress in less than a month. In September 1940, the Destroyer Deal gave Britain much-needed destroyers in exchange for United States use of British bases.

In 1941, the Atlantic Fleet
U.S. Atlantic Fleet
The United States Fleet Forces Command is an Atlantic Ocean theater-level component command of the United States Navy that provides naval resources that are under the operational control of the United States Northern Command...

 was reactivated. The Navy's first shot in anger came on 9 April, when the destroyer dropped depth charge
Depth charge
A depth charge is an anti-submarine warfare weapon intended to destroy or cripple a target submarine by the shock of exploding near it. Most use explosives and a fuze set to go off at a preselected depth in the ocean. Depth charges can be dropped by either surface ships, patrol aircraft, or from...

s on a U-boat
U-boat
U-boat is the anglicized version of the German word U-Boot , itself an abbreviation of Unterseeboot , and refers to military submarines operated by Germany, particularly in World War I and World War II...

 detected while Niblack was rescuing survivors from a torpedoed Dutch freighter
Cargo ship
A cargo ship or freighter is any sort of ship or vessel that carries cargo, goods, and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year; they handle the bulk of international trade...

. A week later, orders were given to attack all Axis ships within 25 miles of the East Coast of the United States. In October, the destroyers and were torpedoed, and Reuben James was lost.

World War II (1941–1945)

On 7 December 1941, Japan launched the Attack on Pearl Harbor
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...

, sinking 5 battleships at their anchorages and severely damaging 3 more while overlooking the naval base's strategically more significant repair facilities and oil tank farm. At approximately the same time on the opposite side of the International Date Line
International Date Line
The International Date Line is a generally north-south imaginary line on the surface of the Earth, passing through the middle of the Pacific Ocean, that designates the place where each calendar day begins...

, the Japanese attacked Wake Island
Battle of Wake Island
The Battle of Wake Island began simultaneously with the Attack on Pearl Harbor and ended on 23 December 1941, with the surrender of the American forces to the Empire of Japan...

, invaded Guam
Battle of Guam (1941)
The First Battle of Guam, was an engagement during the Pacific War in World War II, and took place on 8 December 1941 on Guam in the Mariana Islands between the Empire of Japan and the United States...

, the Philippines. The Japanese also attack Hong Kong
Battle of Hong Kong
The Battle of Hong Kong took place during the Pacific campaign of World War II. It began on 8 December 1941 and ended on 25 December 1941 with Hong Kong, then a Crown colony, surrendering to the Empire of Japan.-Background:...

, Thailand
Japanese Invasion of Thailand
The Japanese invasion of Thailand occurred on December 8, 1941. It was fought between Thailand and the Empire of Japan. Despite fierce fighting in Southern Thailand, Thai resistance lasted only a few hours before ending in a ceasefire.-Background:...

 from its bases in French Indochina and Malaya
Battle of Malaya
The Malayan Campaign was a campaign fought by Allied and Japanese forces in Malaya, from 8 December 1941 – 31 January 1942 during the Second World War. The campaign was dominated by land battles between British Commonwealth army units, and the Imperial Japanese Army...

 after passing through Thai territory. These attacks lead to the US, Britain, Australia and other Allies to declare war on Japan.

On 10 December Germany and the other members of the Tripartite Pact
Tripartite Pact
The Tripartite Pact, also the Three-Power Pact, Axis Pact, Three-way Pact or Tripartite Treaty was a pact signed in Berlin, Germany on September 27, 1940, which established the Axis Powers of World War II...

 supported Japan by declaring war on the United States. A unified American-British-Dutch-Australian Command
American-British-Dutch-Australian Command
The American-British-Dutch-Australian Command, or ABDACOM, was a short-lived, supreme command for all Allied forces in South East Asia, in early 1942, during the Pacific War in World War II...

 (ABDA) was formed in January 1942 to stop the Japanese from advancing past Malaya. However, Singapore surrendered in 15 February 1942, and by 28 February 1942 the Japanese decisively defeated the ABDA forces in the Battle of the Java Sea
Battle of the Java Sea
The Battle of the Java Sea was a decisive naval battle of the Pacific campaign of World War II, that sealed the fate of the Netherlands East Indies....

, sunk the in the Battle of Sunda Strait
Battle of Sunda Strait
The Battle of Sunda Strait was a naval battle which occurred during World War II. On the night of 28 February – 1 March 1942, the Australian light cruiser and the American heavy cruiser faced a major Imperial Japanese Navy task force. After a fierce battle of several hours duration, both Allied...

, and invaded Java
Battle of Java (1942)
The Battle of Java was a battle of the Pacific theatre of World War II. It occurred on the island of Java from 28 February-12 March 1942. It involved forces from the Empire of Japan, which invaded on 28 February 1942, and Allied personnel...

.

The Allies agreed upon the "Europe First" strategy in 1941 which called for the early defeat of Germany before attacking the Japanese, defending a line from Midway to Samoa to Fiji to Australia and building up their forces in the Pacific. The carrier launched the Doolittle Raid
Doolittle Raid
The Doolittle Raid, on 18 April 1942, was the first air raid by the United States to strike the Japanese Home Islands during World War II. By demonstrating that Japan itself was vulnerable to American air attack, it provided a vital morale boost and opportunity for U.S. retaliation after the...

 against Tokyo in April 1942, while task force
Task force
A task force is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology...

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

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

 in June, checking Japanese advances to the east and south.

When the United States launched its first counteroffensive, the invasion of Guadalcanal
Guadalcanal campaign
The Guadalcanal Campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by Allied forces, was a military campaign fought between August 7, 1942 and February 9, 1943 on and around the island of Guadalcanal in the Pacific theatre of World War II...

, the Navy became involved in a series of fights with the Japanese; the disastrous Battle of Savo Island
Battle of Savo Island
The Battle of Savo Island, also known as the First Battle of Savo Island and, in Japanese sources, as the , was a naval battle of the Pacific Campaign of World War II, between the Imperial Japanese Navy and Allied naval forces...

, where four cruisers were sunk, the Battle of the Santa Cruz Islands
Battle of the Santa Cruz Islands
The Battle of the Santa Cruz Islands, 26 October 1942, sometimes referred to as the Battle of Santa Cruz or in Japanese sources as the , was the fourth carrier battle of the Pacific campaign of World War II and the fourth major naval engagement fought between the United States Navy and the Imperial...

, the Battle of Cape Esperance
Battle of Cape Esperance
The Battle of Cape Esperance, also known as the Second Battle of Savo Island and, in Japanese sources, as the , took place on 11–12 October 1942, and was a naval battle of the Pacific campaign of World War II between the Imperial Japanese Navy and United States Navy...

, and the Naval Battle of Guadalcanal
Naval Battle of Guadalcanal
The Naval Battle of Guadalcanal, sometimes referred to as the Third and Fourth Battles of Savo Island, the Battle of the Solomons, The Battle of Friday the 13th, or, in Japanese sources, as the , took place from 12–15 November 1942, and was the decisive engagement in a series of naval battles...

.

Much of the Navy's activity was in support of landings, not only in the "island-hopping" campaign in the Pacific, but also in the landings in Europe, Operations Torch
Operation Torch
Operation Torch was the British-American invasion of French North Africa in World War II during the North African Campaign, started on 8 November 1942....

, Husky, Shingle
Operation Shingle
Operation Shingle , during the Italian Campaign of World War II, was an Allied amphibious landing against Axis forces in the area of Anzio and Nettuno, Italy. The operation was commanded by Major General John P. Lucas and was intended to outflank German forces of the Winter Line and enable an...

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

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

.

In the Atlantic, the Allies waged a long battle with German submarines which was termed the Battle of the Atlantic. Navy aircraft flew from bases in Greenland and Iceland to hunt submarines, and hundreds of escort carriers and destroyer escort
Destroyer escort
A destroyer escort is the classification for a smaller, lightly armed warship designed to be used to escort convoys of merchant marine ships, primarily of the United States Merchant Marine in World War II. It is employed primarily for anti-submarine warfare, but also provides some protection...

s were built which were specifically designed to protect merchant convoys. In the Pacific, the US submarines fought against Japanese shipping in a mirror image of the Atlantic, with US submarines hunting Japanese merchant ships. At the end of the war the US had 260 submarines in commission and lost 52 submarines during the war, 36 in actions in the Pacific. Submarines inflicted devastating losses on Japanese merchant shipping and effectively destroyed the Japanese merchant fleet by January 1945.

In the summer of 1943, the US began the Gilbert and Marshall Islands campaign
Gilbert and Marshall Islands campaign
In the Pacific Theater of World War II, the Gilbert and Marshall Islands campaign, from November 1943 through February 1944, were key strategic operations of the United States Pacific Fleet and Marine Corps in the Central Pacific. The campaign was preceded by a raid on Makin Island by U.S...

 to retake the Gilbert and Marshall Islands. After this success, the Americans went on to the Mariana and Palau Islands
Mariana and Palau Islands campaign
The Mariana and Palau Islands campaign, also known as Operation Forager, was an offensive launched by United States forces against Imperial Japanese forces in the Mariana Islands and Palau in the Pacific Ocean between June and November, 1944 during the Pacific War...

 in summer 1944. Following their defeat at the Battle of Saipan
Battle of Saipan
The Battle of Saipan was a battle of the Pacific campaign of World War II, fought on the island of Saipan in the Mariana Islands from 15 June-9 July 1944. The Allied invasion fleet embarking the expeditionary forces left Pearl Harbor on 5 June 1944, the day before Operation Overlord in Europe was...

, the Imperial Japanese Navy
Imperial Japanese Navy
The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...

's Combined Fleet
Combined Fleet
The was the main ocean-going component of the Imperial Japanese Navy. The Combined Fleet was not a standing force, but a temporary force formed for the duration of a conflict or major naval maneuvers from various units normally under separate commands in peacetime....

, with 5 aircraft carriers sortied to attack the Navy's Fifth Fleet during the Battle of the Philippine Sea
Battle of the Philippine Sea
The Battle of the Philippine Sea was a decisive naval battle of World War II which effectively eliminated the Imperial Japanese Navy's ability to conduct large-scale carrier actions. It took place during the United States' amphibious invasion of the Mariana Islands during the Pacific War...

, which was the largest aircraft carrier battle in history. The battle was so one-sided that it became known as the "Marianas turkey shoot"; the US lost 130 aircraft and no ships while the Japanese lost 411 planes and 3 carriers. Following victory in the Marianas, the US began the reconquest of the Philippines at Leyte
Battle of Leyte
The Battle of Leyte in the Pacific campaign of World War II was the invasion and conquest of the island of Leyte in the Philippines by American and Filipino guerrilla forces under the command of General Douglas MacArthur, who fought against the Imperial Japanese Army in the Philippines led by...

 in October 1944. The Japanese fleet sortied to attack the invasion fleet, resulting in the four-day Battle of Leyte Gulf
Battle of Leyte Gulf
The Battle of Leyte Gulf, also called the "Battles for Leyte Gulf", and formerly known as the "Second Battle of the Philippine Sea", is generally considered to be the largest naval battle of World War II and, by some criteria, possibly the largest naval battle in history.It was fought in waters...

, one of the largest naval battles in history. The first kamikaze
Kamikaze
The were suicide attacks by military aviators from the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, designed to destroy as many warships as possible....

 missions are flown during the battle, sinking and damaging several other US ships; these attacks were the most effective anti-ship weapon of the war.
The island of Iwo Jima
Battle of Iwo Jima
The Battle of Iwo Jima , or Operation Detachment, was a major battle in which the United States fought for and captured the island of Iwo Jima from the Empire of Japan. The U.S...

 served as the next area of battle, which began on 19 February 1945. The Japanese had learned from their defeats in the Marianas campaign and prepared many fortified positions on the island, including pillboxes
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...

 and underground tunnels. The Japanese put up fierce resistance, but American forces reached the summit of Mount Suribachi on 23 February. It was there that five Marines and one Navy Corpsman famously planted the American flag
Raising the Flag on Iwo Jima
Raising the Flag on Iwo Jima is a historic photograph taken on February 23, 1945, by Joe Rosenthal. It depicts five United States Marines and a U.S. Navy corpsman raising the flag of the United States atop Mount Suribachi during the Battle of Iwo Jima in World War II.The photograph was extremely...

.

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

 became the last major battle between US and Japanese ground units. Okinawa was to become a staging area for the eventual invasion of Japan
Operation Downfall
Operation Downfall was the Allied plan for the invasion of Japan near the end of World War II. The operation was cancelled when Japan surrendered after the atomic bombing of Hiroshima and Nagasaki and the Soviet Union's declaration of war against Japan. The operation had two parts: Operation...

 since it was just 350 miles (550 km) south of the Japanese mainland
Mainland Japan
is a term to distinguish the area of Japan from its outlying territories. It was an official term in the pre-war period, distinguishing Japan and the colonies in East Asia...

. Marines and soldiers landed unopposed on 1 April 1945, to begin an 82-day campaign which became the largest land-sea-air battle in history and was noted for the ferocity of the fighting and the high civilian casualties with over 150,000 Okinawans losing their lives. Japanese kamikaze
Kamikaze
The were suicide attacks by military aviators from the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, designed to destroy as many warships as possible....

 pilots enacted the largest loss of ships in US naval history with the sinking of 36 and the damaging of another 243. Total US casualties were over 12,500 dead and 38,000 wounded, while the Japanese lost over 110,000 men, making Okinawa one of the bloodiest battles in history.

The fierce fighting on Okinawa is said to have played a part in President Truman’s
Harry S. Truman
Harry S. Truman was the 33rd President of the United States . As President Franklin D. Roosevelt's third vice president and the 34th Vice President of the United States , he succeeded to the presidency on April 12, 1945, when President Roosevelt died less than three months after beginning his...

 decision to use the atomic bomb and to forsake an invasion of Japan. When the Japanese surrendered, a flotilla of 374 ships entered Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

 to witness the ceremony conducted on the battleship . By the end of the war the US Navy had over 1200 warships.

Cold War (1945–1991)

The immediate postwar fate of the Navy was the scrapping and mothballing of ships on a large scale; by 1948 only 267 ships were active in the Navy. This did not last; tension with the Soviet Union came to a head in the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

, and it became clear that the peacetime Navy would have to be much larger than ever imagined. Fleets were assigned to geographic areas around the world, and ships were sent to hot spots as a standard part of the response to the periodic crises.

The Navy gradually developed a reputation for having the most highly developed technology of all the US services. The 1950s saw the development of nuclear power
Nuclear power
Nuclear power is the use of sustained nuclear fission to generate heat and electricity. Nuclear power plants provide about 6% of the world's energy and 13–14% of the world's electricity, with the U.S., France, and Japan together accounting for about 50% of nuclear generated electricity...

 for ships, under the leadership of Admiral Hyman G. Rickover
Hyman G. Rickover
Hyman George Rickover was a four-star admiral of the United States Navy who directed the original development of naval nuclear propulsion and controlled its operations for three decades as director of Naval Reactors...

, and the development of missile
Missile
Though a missile may be any thrown or launched object, it colloquially almost always refers to a self-propelled guided weapon system.-Etymology:The word missile comes from the Latin verb mittere, meaning "to send"...

s and jets
Jet aircraft
A jet aircraft is an aircraft propelled by jet engines. Jet aircraft generally fly much faster than propeller-powered aircraft and at higher altitudes – as high as . At these altitudes, jet engines achieve maximum efficiency over long distances. The engines in propeller-powered aircraft...

 for Navy use. The , was the world's first nuclear-powered aircraft carrier and was followed by the Nimitz-class supercarrier
Supercarrier
Supercarrier is an unofficial descriptive term for the largest type of aircraft carrier, usually displacing over 70,000 long tons.Supercarrier is an unofficial descriptive term for the largest type of aircraft carrier, usually displacing over 70,000 long tons.Supercarrier is an unofficial...

s. Ballistic missile submarine
Ballistic missile submarine
A ballistic missile submarine is a submarine equipped to launch ballistic missiles .-Description:Ballistic missile submarines are larger than any other type of submarine, in order to accommodate SLBMs such as the Russian R-29 or the American Trident...

s grew ever more deadly and quiet, culminating in the Ohio-class submarines.

Because the North Korean navy was not large, the Korean War featured few naval battles; the combatant navies served mostly as naval artillery for their in-country armies. A large amphibious landing at Inchon
Battle of Inchon
The Battle of Inchon was an amphibious invasion and battle of the Korean War that resulted in a decisive victory and strategic reversal in favor of the United Nations . The operation involved some 75,000 troops and 261 naval vessels, and led to the recapture of the South Korean capital Seoul two...

 succeeded in driving the North Koreans back across the 38th parallel. The Battle of Chosin Reservoir
Battle of Chosin Reservoir
The Battle of Chosin Reservoir, also known as the Chosin Reservoir Campaign or the Changjin Lake Campaign ,Official Chinese sources refer to this battle as the Second Phase Campaign Eastern Sector . The Western Sector is the Battle of the Ch'ongch'on River. was a decisive battle in the Korean War...

 ended with the evacuation of almost 105,000 UN troops from the port of Hungnam
Hungnam
Hŭngnam was the third largest city in North Korea.It is a port city on the eastern coast, in South Hamgyong Province, on the Sea of Japan . The city covers an area of 250 square kilometers...

.

An unlikely combination of Navy ships fought in the Vietnam War; aircraft carriers offshore launched thousands of air strikes, while small gunboats of the "Brown-water navy
Brown-water navy
Brown-water navy is a term that originated in the United States Navy, referring to the small gunboats and patrol boats used in rivers, along with some of the larger ships that supported them as "mother ships," from which they operated...

" patrolled the rivers. Despite the naval activity, new construction was curtailed by Presidents Johnson and Nixon
Richard Nixon
Richard Milhous Nixon was the 37th President of the United States, serving from 1969 to 1974. The only president to resign the office, Nixon had previously served as a US representative and senator from California and as the 36th Vice President of the United States from 1953 to 1961 under...

 to save money, and many of the carriers on Yankee Station
Yankee Station
Yankee Station was a point in the Gulf of Tonkin off the coast of Vietnam used by the U.S. Navy aircraft carriers of Task Force 77 to launch strikes in the Vietnam War. While its official designation was "Point Yankee," it was universally referred to as Yankee Station...

 dated from World War II. By 1978 the fleet had dwindled to 217 surface ships and 119 submarines.

Meanwhile the Soviet fleet had been growing, and outnumbered the US fleet in every type except carriers, and the Navy calculated they probably would be defeated by the Soviet Navy in a major conflict. This concern led the Reagan
Ronald Reagan
Ronald Wilson Reagan was the 40th President of the United States , the 33rd Governor of California and, prior to that, a radio, film and television actor....

 administration to set a goal for a 600-ship Navy
600-ship Navy
The 600 Ship Navy was a strategic plan of the United States Navy during the 1980s to rebuild its fleet after cutbacks that followed the end of the Vietnam War...

, and by 1988 the fleet was at 588, although it declined again in subsequent years. The Iowa-class battleships , , Missouri, and were reactivated after 40 years in storage, modernized, and made showy appearances off the shores of Lebanon
Lebanon
Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...

 and elsewhere. In 1987 and 1988, the United States Navy conducted various combat operations in the Persian Gulf against Iran, most notably Operation Praying Mantis
Operation Praying Mantis
Operation Praying Mantis was an attack on April 18, 1988, by U.S. naval forces within Iranian territorial waters in retaliation for the Iranian mining of the Persian Gulf during the Iran Iraq war and the subsequent damage to an American warship....

, the largest surface-air naval battle since World War II.

Post–Cold War (1991–present)


Following the collapse of the Soviet Union, the Soviet Navy fell apart, without sufficient personnel to man many of its ships or the money to maintain them—indeed, many of them were sold to foreign nations. This left the United States as the world's undisputed naval superpower. US naval forces did undergo a decline in absolute terms but relative to the rest of the world, however, United States dwarfs other nations naval power as evinced by its 11 aircraft supercarriers and their supporting battle groups. During the 1990s, the United States naval strategy was based on the overall military strategy of the United States which emphasized the ability of the United States to engage in two simultaneous limited wars along separate fronts.

The ships of the Navy participated in a number of conflicts after the end of the Cold War. After diplomatic efforts failed, the Navy was instrumental in the opening phases of the 1991 Gulf War with Iraq; the ships of the navy launched hundreds of Tomahawk II cruise missile
Cruise missile
A cruise missile is a guided missile that carries an explosive payload and is propelled, usually by a jet engine, towards a land-based or sea-based target. Cruise missiles are designed to deliver a large warhead over long distances with high accuracy...

s and naval aircraft flew sorties from six carriers in the Persian Gulf and Red Sea. The battleships USS Missouri and USS Wisconsin fired their 16-inch guns for the first time since the Korean war on several targets in Kuwait
Kuwait
The State of Kuwait is a sovereign Arab state situated in the north-east of the Arabian Peninsula in Western Asia. It is bordered by Saudi Arabia to the south at Khafji, and Iraq to the north at Basra. It lies on the north-western shore of the Persian Gulf. The name Kuwait is derived from the...

 in early February. In 1999, hundreds of Navy and Marine Corps aircraft flew thousands of sorties from bases in Italy and carriers in the Adriatic against targets in Serbia and Kosovo to try to stop the ethnic cleansing
Ethnic cleansing
Ethnic cleansing is a purposeful policy designed by one ethnic or religious group to remove by violent and terror-inspiring means the civilian population of another ethnic orreligious group from certain geographic areas....

 in Kosovo
Kosovo
Kosovo is a region in southeastern Europe. Part of the Ottoman Empire for more than five centuries, later the Autonomous Province of Kosovo and Metohija within Serbia...

. After a 78 day campaign Serbia capitulated to NATO's demands.

As of 2011, the Navy is the smallest numerically, with less than 300 ships, since World War I. However, the comparison is misleading since modern ships are larger and carry more firepower than those of 100 years ago. Since the end of the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

, the Navy has shifted its focus from preparations for large-scale war with the Soviet Union to special operations and strike missions in regional conflicts. The Navy participated in Operation Enduring Freedom, Operation Iraqi Freedom, and is a major participant in the ongoing War on Terror
War on Terror
The War on Terror is a term commonly applied to an international military campaign led by the United States and the United Kingdom with the support of other North Atlantic Treaty Organisation as well as non-NATO countries...

, largely in this capacity. Development continues on new ships and weapons, including the and the Littoral combat ship
Littoral combat ship
A Littoral Combat Ship is a type of relatively small surface vessel intended for operations in the littoral zone . It is "envisioned to be a networked, agile, stealthy surface combatant capable of defeating anti-access and asymmetric threats in the littorals." Two ship classes are the first...

. Because of its size, weapons technology, and ability to project force far from American shores, the current US Navy remains a potent asset for the United States Commander-in-Chief
Commander-in-Chief
A commander-in-chief is the commander of a nation's military forces or significant element of those forces. In the latter case, the force element may be defined as those forces within a particular region or those forces which are associated by function. As a practical term it refers to the military...

 (the President of the United States).

On 2011, US Navy warships launched cruise missiles into military targets in Libya Operation Odyssey Dawn
Operation Odyssey Dawn
Operation Odyssey Dawn was the U.S. code name for the US part of the international military operation in Libya to enforce United Nations Security Council Resolution 1973. during the initial period of 19–31 March 2011, which continued afterwards under NATO command as Operation Unified Protector...

to enforce a UN resolution.

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