# List of wars involving the United States

This is a list of military conflicts, that United States has been involved in. There are currently 123 military conflicts on this list, 5 of which are ongoing. These include major conflicts like the American Revolutionary War, the War of 1812, the Mexican–American War, the American Civil War, the Spanish-American War, World War I, World War II and the Gulf War. It also includes US involvement in widespread periods of conflict like the Indian Wars, the Cold War (including the Korean War and the Vietnam War), and the War on Terror (including the Iraq War, the War in Afghanistan, and others).
Five military engagements encompassing four wars, all of which are interventions, currently involve the US: the Yemeni Civil War, the Somali Civil War, the Syrian Civil War, and the Gaza War.
    USA victory
    Another result *
    USA defeat
    Ongoing conflict
*e.g. a treaty or peace without a clear result, status quo ante bellum, result of civil or internal conflict, result unknown or indecisive, inconclusive

## 18th-century wars

| Conflict | Allies | Opponent(s) | Result for the United States and its Allies | Presidents of the United States |
| American Revolutionary War (1775–1783) Location: Eastern and Southern North America the Atlantic The Battle of Long Island, August 27, 1776 | United States Kingdom of France Canadian Auxiliaries Spanish Empire Iroquois Oneida Tuscarora Watauga Association Catawba Lenape Choctaw  Dutch Republic  Mysore | Great Britain Loyalists German Auxiliaries Iroquois Onondaga Cayuga Seneca Cherokee | US-allied victory - The American Revolution started as a civil war within the British Empire. It became a larger international war in 1778 once France joined. Treaty of Paris (1783) Britain recognizes the independence of the United States of America and the Thirteen Colonies. | President of the Continental Congress in American Revolutionary War: John Hancock Henry Laurens John Jay Samuel Huntington Thomas McKean John Hanson Elias Boudinot Thomas Mifflin Richard Henry Lee John Hancock Nathaniel Gorham Arthur St. Clair Cyrus Griffin |
| Cherokee–American wars (1776–1795) Part of the American Indian Wars Location: Old Southwest Abduction of Daniel Boone's daughter by the Cherokee | United States Choctaw | Cherokee Supported by: Spain (1783–1788) | US-allied victory | President of the Continental Congress in Cherokee–American wars: John Hancock Henry Laurens John Jay Samuel Huntington Thomas McKean John Hanson Elias Boudinot Thomas Mifflin Richard Henry Lee John Hancock Nathaniel Gorham Arthur St. Clair Cyrus Griffin Presidents of the United States: George Washington |
| Northwest Indian War (1785–1793) Part of the American Indian Wars Location: Northwest Territory The Battle of Fallen Timbers | United States Chickasaw Choctaw | Western Confederacy List Council of Three Fires Iroquois Confederacy Seven Nations of Canada Wabash Confederacy (Wea, Piankashaw, and others) Illini Confederacy Wyandot Mississaugas Menominee Shawnee Lenape Miami Kickapoo Kaskaskia Chickamauga Cherokee (or "Lower Cherokee") Upper Muscogee Great Britain British North America | US-allied victory Treaty of Greenville (1795) American occupation of the Northwest Territory | George Washington |
| American–Algerian War (1785–1795) Location: Mediterranean Sea and Atlantic OceanCaptain William Bainbridge paying tribute to the Dey of Algiers | United States | Regency of Algiers | Algerian victory Establishment of the United States Navy through the Naval Act of 1794 The U.S. government agrees to pay an annual tribute of $21,600 $1 million tribute offered to the Dey | George Washington |
| Quasi-War (1798–1800) Location: Atlantic Ocean, the Caribbean, the Indian Ocean and the MediterraneanUSS Constellation vs. L'Insurgente | United States Co-belligerent: Great Britain | French Republic Guadeloupe Spain | Convention of 1800 Peaceful cessation of Franco-American alliance End of French privateer attacks on American shipping American neutrality and renunciation of claims by France | John Adams |

## 19th-century wars

| Conflict | Allies | Opponent(s) | Result for the United States and its Allies | Presidents of the United States |
| First Barbary War (1801–1805) Part of the Barbary Wars Location: Mediterranean Sea off the coast of Tripoli Lieutenant Presley O'Bannon at Derna, April 1805 | United States Sweden Kingdom of Sicily Malta Protectorate Kingdom of Portugal Sultanate of Morocco | Ottoman Tripolitania Sultanate of Morocco | US-allied victory | Thomas Jefferson |
| Tecumseh's War (1810–1813) Part of the American Indian Wars and the War of 1812 Location: Northwest River Ohio The Battle of Tippecanoe | United States | Tecumseh's Confederacy List Shawnee Red Sticks Ojibway Chickamauga Meskwaki Iroquois Miami Mingo Odawa Kickapoo Lenape Mascouten Potawatomi Sauk Wyandot | US victory | James Madison |
| War of 1812 (1812–1815) Location: Eastern and Central North America General Andrew Jackson stands on the parapet of his makeshift defenses as his troops repulse attacking Highlanders, by painter Edward Percy Moran in 1910. | United States Choctaw Nation Cherokee Nation Creek Allies | United Kingdom British North America The Canadas Swiss Mercenaries (The Regiment de Meuron and De Watteville's Regiment) Tecumseh's Confederacy List Shawnee Red Sticks Ojibway Chickamauga Meskwaki Iroquois Miami Mingo Odawa Kickapoo Lenape Mascouten Potawatomi Sauk Wyandot Spain (1814) | Inconclusive/Other Result Treaty of Ghent Military stalemate; both sides' invasion attempts repulsed Status quo ante bellum Tecumseh's Confederacy Disbanded York sacked by American troops, destroying the original Canadian parliament. Commonwealth troops commit the burning of Washington including the White House and the Capitol | James Madison |
| Creek War (1813–1814) Part of the American Indian Wars and the War of 1812 Location: Southern United States The Battle of Horseshoe Bend, 1814 | United States Lower Creeks Cherokee Nation Choctaw Nation | Red Stick Creek Supported by:  United Kingdom Spain Tecumseh's Confederacy | US-allied victory Treaty of Fort Jackson | James Madison |
| Nuku Hiva Campaign (1813–1814) Part of the War of 1812 Location: Nuku Hiva, Marquesas Islands | United States | Tai Pi Happah (October 1813) Te I'i (May 1814) | US tactical victory Tai Pis and Happahs defeated Polynesian strategic victory Fort Madison destroyed and Nuku Hiva abandoned by May 1814 | James Madison |
| Second Barbary War (1815) Part of the Barbary Wars Location: Mediterranean Sea and the Barbary States Decatur's squadron off Algiers | United States | Deylik of Algiers | US victory | James Madison |
| First Seminole War (1817–1818) Part of the Seminole Wars and the American Indian Wars Location: Pensacola, Spanish Florida Barracks and tents at Fort Brooke near Tampa Bay | United States | Seminole Spanish Florida | US victory Spain cedes Spanish Florida to the United States in the Adams–Onís Treaty of 1819 The United States forcibly relocates Seminole in northern Florida to a reservation in the center of the peninsula in the Treaty of Moultrie Creek of 1823 | James Monroe |
| Arikara War (1823) Part of the American Indian Wars Location: Missouri River An Arikara warrior | United States Sioux | Arikara | Inconclusive/Other Result White Peace treaty agreed by US Col Leavenworth | |
| Aegean Sea anti-piracy operations of the United States (1825-1828) Part of the Greek War of Independence Location: Aegean Sea Greek pirates attacking the British merchant ship Comet (later to be liberated by the USS Porpoise during the Battle of Doro Passage). | United States | Greek Pirates | US Victory Pirate Threat Eliminated | John Quincy Adams |
| Winnebago War (1827) Part of the American Indian Wars Location: Illinois and Michigan Territory | United States Choctaw Nation | Prairie La Crosse Ho-Chunks with a few allies | US-allied victory Ho-Chunks cede lead mining region to the United States | John Quincy Adams |
| First Sumatran Expedition (1832) Part of the Sumatran expeditions Location: Kuala Batee, Aceh Sultanate, Island of Sumatra U.S. Infantry Attacking at the Battle of Quallah Battoo | United States | Chiefdom of Kuala Batee | US Victory | Andrew Jackson |
| Black Hawk War (1832) Part of the American Indian Wars Location: Illinois and Michigan Territory Native women and children fleeing the Battle of Bad Axe | United States Ho-Chunk Menominee Dakota Potawatomi | Black Hawk's British Band Ho-Chunk and Potawatomi allies | US-allied victory End of Native armed resistance to U.S. expansion in the Old Northwest Black Hawk Purchase (1832) The United States purchases Potawatomi land in the Treaty of Tippecanoe (1832) The United States purchases the rest of Potawatomi land west of the Mississippi River in the Treaty of Chicago (1833) | Andrew Jackson |
| Second Seminole War (1835–1842) Part of the Seminole Wars and the American Indian Wars Location: Florida, United States U.S. Marines search for Seminoles in the Everglades | United States | Seminole | US victory Approximately 3,800 Seminoles transported to the Indian Territory Approximately 300 remain in Everglades | Andrew Jackson (March 4, 1829 – March 4, 1837) Martin Van Buren (March 4, 1837 – March 4, 1841) William Henry Harrison (March 4, 1841 – April 4, 1841) John Tyler (April 4, 1841 –March 4, 1845) |
| Texas Comanche Wars (1836–1875) Part of the Texas–Indian wars and the American Indian Wars Location: South-central United States (Texas, Oklahoma, New Mexico, Kansas, Colorado) and northern Mexico A group of U.S. soldiers defend themselves from Comanche warriors at the Battle of Buffalo Wallow. | Republic of Texas United States | Comanche | US victory | Andrew Jackson (March 4, 1829 – March 4, 1837) Martin Van Buren (March 4, 1837 – March 4, 1841) William Henry Harrison (March 4, 1841 – April 4, 1841) John Tyler (April 4, 1841 –March 4, 1845) James K. Polk (March 4, 1845 – March 4, 1849) Zachary Taylor (March 4, 1849 – July 9, 1850) Millard Fillmore (July 9, 1850 – March 4, 1853) Franklin Pierce (March 4, 1853 – March 4, 1857) James Buchanan (March 4, 1857 – March 4, 1861) Abraham Lincoln (March 4, 1861 – April 15, 1865) Andrew Johnson (April 15, 1865 – March 4, 1869) Ulysses S. Grant (March 4, 1869 – March 4, 1877) |
| Second Sumatran Expedition (1838) Part of the Sumatran expeditions Location:Kuala Batee and Muckie, Aceh Sultanate, Island of Sumatra, Island of Sumatra Bombardment of Muckie | United States | Chiefdom of Kuala Batee Chiefdom of Muckie | US Victory 5 Muckie Forts and the Village of Muckie destroyed Kuala Batee Bombarded End of Piracy by Muckie and Kuala | Martin Van Buren |
| Battle of Drummond's Island (1841) Part of the United States Exploring Expedition Location:Drummond's Island, Gilbert Islands, (Modern Day Kiribati) Gilbertese warriors of Tabiteuea, with shark's teeth weapons. (Drawn by Alfred Agate) | United States | Micronesian Natives | US victory 2 Native Villages Destroyed | John Tyler |
| Ivory Coast Expedition (1842) Part of the African Slave Trade Patrol and the Blockade of Africa Location: Ivory Coast, Liberia Veterans of the expedition on board Saratoga in 1842. | United States | Bereby | US Victory 8 Villages (including Little Bereby) destroyed | John Tyler |
| Capture of Monterey (1842) Location: Mexico (Modern day California) Commodore Jones' flagship USS United States | United States | Mexico | Inconclusive/Other Result Status quo ante bellum Americans leave the city after hearing the war did not break out | John Tyler |
| Mexican–American War (1846–1848) Location: Texas, New Mexico, California and Mexico 2nd Dragoons charge the enemy at the Battle of Resaca de la Palma, 1846 | United States California Republic | Mexico | US-allied victory Treaty of Guadalupe Hidalgo Mexican Cession Mexican recognition of US sovereignty over Texas and California (among other territories) | James K. Polk |
| Cayuse War (1847–1855) Part of the American Indian Wars Location: Oregon The Whitman Massacre. | United States | Cayuse | US victory Cayuse reduced in numbers and forced to cede most of their lands | James K. Polk (March 4, 1845 – March 4, 1849) Zachary Taylor (March 4, 1849 – July 9, 1850) Millard Fillmore (July 9, 1850 – March 4, 1853) Franklin Pierce (March 4, 1853 – March 4, 1857) |
| Apache Wars (1849–1924) Part of the Texas–Indian wars and the American Indian Wars Location: Southwestern United States U.S. Cavalry dash for cover while fighting Apaches, by F. Remington | United States | Apache Ute Yavapai | US victory Apaches moved to reservations | James K. Polk (March 4, 1845 – March 4, 1849) Zachary Taylor (March 4, 1849 – July 9, 1850) Millard Fillmore (July 9, 1850 – March 4, 1853) Franklin Pierce (March 4, 1853 – March 4, 1857) James Buchanan (March 4, 1857 – March 4, 1861) Abraham Lincoln (March 4, 1861 – April 15, 1865) Andrew Johnson (April 15, 1865 – March 4, 1869) Ulysses S. Grant (March 4, 1869 – March 4, 1877) Rutherford B. Hayes (March 4, 1877 – March 4, 1881) James A. Garfield (March 4, 1881 – September 19, 1881) Chester A. Arthur (September 19, 1881 – March 4, 1885) Grover Cleveland (March 4, 1885 – March 4, 1889) Benjamin Harrison (March 4, 1889 – March 4, 1893) Grover Cleveland (March 4, 1893 – March 4, 1897) William McKinley (March 4, 1897 – September 14, 1901) Theodore Roosevelt (September 14, 1901 – March 4, 1909) William Howard Taft (March 4, 1909 – March 4, 1913) Woodrow Wilson (March 4, 1913 – March 4, 1921) Warren G. Harding (March 4, 1921 – August 2, 1923) Calvin Coolidge (August 2, 1923 – March 4, 1929) |
| Navajo Wars (1849–1866) Part of the American Indian Wars Location: New Mexico Fort Defiance | United States | Navajo Nation | US victory Long Walk of the Navajo Navajos moved to reservations | James K. Polk (March 4, 1845 – March 4, 1849) Zachary Taylor (March 4, 1849 – July 9, 1850) Millard Fillmore (July 9, 1850 – March 4, 1853) Franklin Pierce (March 4, 1853 – March 4, 1857) James Buchanan (March 4, 1857 – March 4, 1861) Abraham Lincoln (March 4, 1861 – April 15, 1865) Andrew Johnson (April 15, 1865 – March 4, 1869) |
| Johanna Expedition (1851) Part of the African Slave Trade Patrol and the Blockade of Africa Location: Matsamudu, Comoros Islands, Johanna Island, Indian OceanUSS Dale off San José del Cabo, Mexico in 1847, by William Henry Meyers. | United States | Johanna Sultanate | U.S. Victory Johannans surrendered the town, houses, slaves, cattle and money to the U.S.A. Most Favored Nation Treaty Signed | Millard Fillmore |
| Battle of Muddy Flat (1854) Part of the Taiping Rebellion and the Small Swords Society Uprising Location: Shanghai, China Battle of Muddy Flat along the Defense Creek | United States British Empire Shanghai Volunteer Corps Taiping Heavenly Kingdom | China Pirate Mercenaries | US-allied victory Qing forces retreat a mile away from the foreign concessions area Adherence to Foreign Extraterritoriality Status Maintained Yangtze Patrol, Shanghai Municipal Council, Shanghai Municipal Police, and the Chinese Maritime Customs Service established | Franklin Pierce |
| Bleeding Kansas (1854–1861) Location: Kansas and Missouri Sacking of Lawrence in 1856 | Anti-slavery settlers (Free-Staters) | Pro-slavery settlers (Border Ruffians) | Free-Stater victory. Kansas admitted as a free state on January 29, 1861. | Franklin Pierece (May 22, 1854 – March 4, 1857) James Buchannan (March 4, 1857 – March 4, 1861) Abraham Lincoln (March 4, 1861 – April 12, 1861) |
| Bombardment of Greytown (1854) Location: Greytown, Mosquito Coast (Modern Day Nicaragua) An illustration of USS Cyane bombarding Greytown | United States | Mosquito Coast | US Victory Monroe Doctrine enforced Beginning of a gradual decline of the Mosquito Coast as a British Protectorate | Franklin Pierce |
| Puget Sound War (1855–1856) Part of the American Indian Wars Location: Washington | United States Snoqualmie | Nisqually Muckleshoot Puyallup Klickitat Haida Tlingit | US victory Indians relocated to Siletz, Grand Ronde and Coast Reservations | Franklin Pierce |
| Rogue River Wars (1855–1856) Part of the American Indian Wars Location: Rogue Valley | United States | Tututni | US victory Indians relocated to Siletz, Grand Ronde and Coast Reservations | Franklin Pierce |
| Third Seminole War (1855–1858) Part of the Seminole Wars and the American Indian Wars Location: Pensacola, Florida | United States | Seminole | US victory By late 1850s, most Seminoles forced to leave their land; a few hundred remain deep in the Everglades on land unwanted by white settlers | Franklin Pierce (March 4, 1853 – March 4, 1857) James Buchanan (March 4, 1857 – 1855) |
| Yakima War (1855–1858) Part of the American Indian Wars Location: Washington Territory Seattleites evacuate to the town blockhouse as USS Decatur opens fire on advancing tribal forces. | United States Snoqualmie | Yakama Walla Walla tribe Umatilla tribe Nez Perce tribe Cayuse tribe | US victory | Franklin Pierce (March 4, 1853 – March 4, 1857) James Buchanan (March 4, 1857 – September, 1858) |
| Second Opium War (1856–1859) Part of the Opium Wars Location: China Palikao's bridge, on the evening of the battle, by Émile Bayard | British Empire French Empire United States | China | US victory Treaties of Tientsin Kowloon Peninsula and Stonecutters Island ceded to the United Kingdom as part of British Hong Kong | Franklin Pierce (November 16, 1856 – March 4, 1857) James Buchanan (March 4, 1857 – June 26, 1859) |
| Utah War (1857–1858) Part of the Mormon wars Location: Utah Territory and Wyoming | United States | Deseret/Utah Mormons (Nauvoo Legion) | Inconclusive/Other Result Resolution through negotiation Brigham Young replaced as governor of the territory Full amnesty for charges of sedition and treason issued to the citizens of Utah Territory by President James Buchanan on the condition that they accept American Federal authority | James Buchanan |
| Reform War (1858–1861) Location: MexicoThe USS Savannah which fought in the Battle of Antón Lizardo in March 1860 | Liberals United States | Conservatives | Liberals - US victory | James Buchanan |
| Pig War (1859) Location: San Juan Islands Proposed boundaries:  Through Haro Strait, favored by the US  Through Rosario Strait, favored by Britain  Through San Juan Channel, compromise proposal The lines are as shown on maps of the time. The modern boundary follows straight line segments and roughly follows the blue line. The modern eastern boundary of San Juan County roughly follows the red line. | United States Washington Territory | United Kingdom Colony of Vancouver Island | Inconclusive/Other Result Treaty of Washington Mostly a bloodless war – San Juan Islands awarded to the United States following third-party arbitration | James Buchanan |
| John Brown's Raid on Harpers Ferry (1859) Part of pre-Civil War conflicts Location: West Virginia Harper's Weekly illustration of U.S. Marines attacking John Brown's "Fort" Teresa Baine | United States | Abolitionist Insurgents | US victory | James Buchanan |
| First and Second Cortina War (1859–1861) Location: Texas and Mexico | United States Confederate States  Mexico | Cortinista bandits | US-allied victory | James Buchanan |
| Paiute War (1860) Part of the American Indian Wars Location: Pyramid Lake, Nevada | United States | Paiute Shoshone Bannock | US victory | James Buchanan |
| American Civil War (1861–1865) Location: Southern United States, Indian Territory, Northeastern United States, Western United States, Atlantic Ocean The Battle of Antietam, by Thure de Thulstrup. | United States Indian Home Guard Seminole Nation (Western) (most) Seminole Nation (Florida) Muskogee Nation (part) | Confederate States Cherokee Nation Choctaw Nation Catawba Chickasaw Nation (part) Muskogee Nation (part) Seminole Nation (Western) (part) Comanche Nation (part) | US victory Dissolution of the Confederate States U.S. territorial integrity preserved Beginning of the Reconstruction Era U.S. Federal government expands further control over land and railroad rights in the Indian Territory. | Abraham Lincoln |
| Bombardment of Qui Nhơn (1861) Part of the Cochinchina Campaign Location: Qui Nhơn, VietnamUSS Saginaw at Mare Island naval yard. | United States | Đại Nam under the Nguyễn dynasty | US Victory Vietnamese-held fort destroyed | Abraham Lincoln |
| Yavapai Wars (1861–1875) Part of the American Indian Wars Location: Arizona Rescue of Lt. Charles King | United States | Yavapai Apache Yuma Mohave | US victory | Abraham Lincoln (March 4, 1861 – April 15, 1865) Andrew Johnson (April 15, 1865 – March 4, 1869) Ulysses S. Grant (March 4, 1869 – March 4, 1877) |
| Dakota War of 1862 (1862) Part of the American Indian Wars Location: Minnesota and Dakota The Siege of New Ulm, Minnesota on August 19, 1862 | United States | Dakota Sioux | US victory | Abraham Lincoln |
| 1st Battle of Shimonoseki Straits and the following Shimonoseki campaign (1863-1864) Part of Bakumatsu Conflicts Location: Shimonoseki Straits, Honshu, Japan USS Wyoming sinking the American built Koshin (Originally the Lancefield) which had been gifted to Japan that same year (1863) | United States British Empire French Empire Netherlands | Chōshū Domain | US-allied victory Treaty of Amity and Commerce enforced | Abraham Lincoln |
| Colorado War (1863–1865) Part of the American Indian Wars Location: Colorado, Wyoming, and Nebraska | United States | Cheyenne Arapaho Sioux | Inconclusive/Other Result Military and congressional hearings against John Chivington | Abraham Lincoln |
| Snake War (1864–1868) Part of the American Indian Wars Locations: Oregon, Nevada, California, and Idaho | United States | Paiute Bannock Shoshone | US victory | Abraham Lincoln (March 4, 1861 – April 15, 1865) Andrew Johnson (April 15, 1865 – March 4, 1869) |
| Powder River War (1865) Part of the American Indian Wars Location: Powder River State | United States | Sioux Cheyenne Arapaho | Inconclusive | Andrew Johnson |
| Red Cloud's War (1866–1868) Part of the American Indian Wars Location: Powder River State The Fetterman Massacre | United States Crow Nation | Lakota Cheyenne Arapaho | Lakota-allied victory Treaty of Fort Laramie (1868) Legal control of Powder River Country ceded to Native Americans Creation of the Great Sioux Reservation (including the Black Hills) | Andrew Johnson |
| Formosa Expedition (1867) Location: Hengchun, Taiwan, Qing China' Attack of United States Marines and Sailors on the pirates of the island of Formosa, East Indies, Harper's Weekly | United States | Paiwan | Paiwan victory | Andrew Johnson |
| Comanche Campaign (1867–1875) Part of the American Indian Wars Location: Western United States Battle of Beecher Island. One soldier and three horses have fallen, while others continue to wage the battle. | United States | Cheyenne Arapaho Comanche Kiowa | US victory | Andrew Johnson (April 15, 1865 – March 4, 1869) Ulysses S. Grant (March 4, 1869 – March 4, 1877) |
| United States expedition to Korea (1871) Location: Ganghwa IslandThe captured Sujagi aboard USS Colorado in June 1871 | United States | Joseon dynasty | Inconclusive/Other Result American military victory American diplomatic failure Withdrawal of American forces Korea retains isolationist policies Eventual signing of the United States–Korea Treaty of 1882 | Ulysses S. Grant |
| Modoc War (1872–1873) Part of the American Indian Wars Location: California and Oregon Engraving of soldiers recovering the bodies of the slain May 3, 1873. | United States | Modoc | US victory | Ulysses S. Grant |
| Red River War (1874–1875) Part of the American Indian Wars Location: Texas | United States | Cheyenne Arapaho Comanche Kiowa | US victory End to the Texas-Indian Wars | Ulysses S. Grant |
| Las Cuevas War (1875) Location: Texas and Mexico Texan soldiers. | United States | Mexican bandits | US victory Cattle returned to Texas | Ulysses S. Grant |
| Great Sioux War of 1876 (1876–1877) Part of the American Indian Wars Location: Montana, Dakota and Wyoming Custer's last stand at Little Bighorn. | United States | Lakota Dakota Sioux Northern Cheyenne Arapaho | US victory Legal control of Powder River Country ceded to the United States | Ulysses S. Grant |
| Buffalo Hunters' War (1876–1877) Part of the American Indian Wars Location: Texas and Oklahoma | United States | Comanche Apache | US victory | Ulysses S. Grant |
| Nez Perce War (1877) Part of the American Indian Wars Location: Oregon, Idaho, Wyoming, and Montana Chief Joseph's band in the Battle of Bear Paw Mountain | United States | Nez Perce Palouse | US victory | Rutherford B. Hayes |
| Bannock War (1878) Part of the American Indian Wars Location: Idaho, Oregon, and Wyoming | United States | Bannock Shoshone Paiute | US victory | Rutherford B. Hayes |
| Cheyenne War (1878–1879) Part of the American Indian Wars Location: Oklahoma, Kansas, Nebraska, South Dakota and Montana Aftermath of the Battle of "The Pit." | United States | Cheyenne | US victory | Rutherford B. Hayes |
| Sheepeater Indian War (1879) Part of the American Indian Wars Location: Idaho | United States | Shoshone | US victory | Rutherford B. Hayes |
| Victorio's War (1879–1880) Part of the American Indian Wars Location: Mexico | United States Mexico | Apache | US-allied victory | Rutherford B. Hayes |
| White River War (1879) Part of the American Indian Wars Location: Colorado Battle of Milk Creek Canyon | United States | Ute | US victory | Rutherford B. Hayes |
| Egyptian Expedition (1882) Part of the Anglo-Egyptian War Location: Alexandria Front page of "Judge" magazine, August 12, 1882, featuring a cartoon by "JAW" concerning aid rendered by the American navy during the British bombardment of Alexandria. | United States | Egypt | US victory | Chester A. Arthur |
| Crow War (1887) Part of the American Indian Wars Location: Montana Crow Indians Firing into the Agency 1887 | United States | Crow people | US victory | Grover Cleveland |
| Ghost Dance War (1890–1891) Part of the American Indian Wars Location: South Dakota Mass grave for the dead Lakota after the Wounded Knee Massacre. | United States | Sioux | US victory | Benjamin Harrison |
| Garza War (1891–1893) Location: Texas and Mexico 3rd Cavalry Troopers searching a suspected Revolutionist, 1892 | Mexico United States | Garzistas | US-allied victory | Benjamin Harrison |
| Yaqui Wars (1896–1918) Part of the American Indian Wars Location: Arizona and Mexico 10th Cavalry soldiers holding Yaqui prisoners at their camp in Bear Valley, January 9, 1918. | United States Mexico | Yaqui Pima Opata | US-allied victory | Grover Cleveland (March 4, 1893 – March 4, 1897) William McKinley (March 4, 1897 – September 14, 1901) Theodore Roosevelt (September 14, 1901 – March 4, 1909) William Howard Taft (March 4, 1909 – March 4, 1913) Woodrow Wilson (March 4, 1913 – March 4, 1921) |
| Second Samoan Civil War (1898–1899) Location: Samoa Samoan warriors and American servicemen during the Siege of Apia in March 1899. | Samoa United States | Mataafans German Empire | Inconclusive/Other Result Allies and Rebels compromise for peace Tripartite Convention United States acquires American Samoa United Kingdom withdraws claim in exchange for concessions in the Solomon Islands Germany acquires German Samoa Mata'afa Iosefo becomes paramount chief of Samoa | William McKinley |
| Spanish–American War (1898) Location: Cuba, Puerto Rico, Philippines and Guam Theodore Roosevelt and the "Rough Riders" after the Battle of San Juan Hill. | United States Cuban Revolutionaries Filipino Revolutionaries | Spain Cuba Guam Philippines Puerto Rico | US-allied victory Treaty of Paris Fall of the Spanish Empire United States took possession of the Spanish colonies: Puerto Rico, Philippines and Guam Protectorate over Cuba Rise of the United States as a world power Founding of the First Philippine Republic and beginning of the Philippine–American War The war contributed to the popular image of Theodore Roosevelt as a war hero and advanced his career, in 1901 became the 26th president of the United States Spain sells to Germany its last colonies in the Pacific in 1899 | William McKinley |
| Philippine–American War (1899–1902) Location: Philippines U.S. soldiers during the Battle of Manila. | 1899–1902 United States Military government 1902-1906 United States Civil government | 1899–1902 Philippine Republic Negros Republic Zamboanga Republic Limited Foreign Support: Empire of Japan Shishi 1902-1906 Tagalog Republic Irrenconcilables | US victory Occupation of the Philippines Establishment of the Insular Government of the Philippine Islands General Emilio Aguinaldo captured Dissolution of the First Philippine Republic | William McKinley (March 4, 1897 – September 14, 1901) Theodore Roosevelt (September 14, 1901 – March 4, 1909) |
| Moro Rebellion (1899–1913) Location: Philippines American soldiers battling against Moro fighters. | United States | Moro Remnants of the Sulu Sultanate | US victory Total annexation of the Philippine Islands | William McKinley (March 4, 1897 – September 14, 1901) Theodore Roosevelt (September 14, 1901 – March 4, 1909) William Howard Taft (March 4, 1909 – March 4, 1913) Woodrow Wilson (March 4, 1913 – March 4, 1921) |
| Boxer Rebellion (1899–1901) Location: China U.S. soldiers during the Boxer Rebellion in China. | Eight-Nation Alliance  British Empire  Russia  Japan  France  Germany  United States  Italy  Austria-Hungary  Netherlands Spain Belgium Mutual Defence Pact of Southeast China (after 1900) | Boxer movement Qing dynasty (after 1900) | US-allied victory Signing of the Boxer Protocol Provisions for foreign troops to be stationed in Beijing | William McKinley |

## 20th-century wars

| Conflict | Allies | Opponent(s) | Result for the United States and its Allies | Presidents of the United States |
| Crazy Snake's War (1909) Part of the American Indian Wars Location: Oklahoma Creek prisoners of war. | United States | Creek | US victory | Theodore Roosevelt (September 14, 1901 – March 4, 1909) Warren G. Harding (March 4, 1921 – August 2, 1923) Calvin Coolidge (August 2, 1923 – March 4, 1929) |
| Mexican Border War (1910–1919) Part of the Mexican Revolution Location: Mexico–United States border American troops of the 16th Infantry Regiment rest for the night on May 27, 1916 | United States | Mexico Supported by:  German Empire | US victory Seditionist insurgency suppressed Permanent border wall established Pancho Villa's troops no longer an effective fighting force Mexican Constitutionalist faction leader Venustiano Carranza recognised as the sole leaders of the Mexican government by the United States | William Howard Taft (March 4, 1909 – March 4, 1913) Woodrow Wilson (March 4, 1913 – March 4, 1921) |
| Little Race War (1912) Part of the Banana Wars Location: Cuba USS Mississippi in Cuba | Cuba United States | Cuban PIC | US-allied victory Dissolution of the PIC | William Howard Taft |
| United States occupation of Nicaragua (1912–1933) Part of the Banana Wars Location: Nicaragua US Marines holding a captured Sandinista flag. | United States Nicaragua | Nicaraguan Liberals Sandinistas | US victory Change of regime in Nicaragua Great Depression marks US withdrawal (1933) | William Howard Taft (March 4, 1909 – March 4, 1913) Woodrow Wilson (March 4, 1913 – March 4, 1921) Warren G. Harding (March 4, 1921 – August 2, 1923) Calvin Coolidge (August 2, 1923 – March 4, 1929) Herbert Hoover (March 4, 1929 – March 4, 1933) |
| Bluff War (1914–1915) Part of the American Indian Wars Location: Utah and Colorado Prisoners of the Bluff War in Thompson, Utah, waiting to board a train for their trial in Salt Lake City. | United States | Ute Paiute | US victory | Woodrow Wilson |
| United States occupation of Veracruz (1914) Part of the Mexican Revolution Location: Mexico American ships at Veracruz | United States Supported by:  United Kingdom | Mexico Supported by:  German Empire  Kingdom of Italy | US victory | Woodrow Wilson |
| United States occupation of Haiti (1915–1934) Part of the Banana Wars Location: Haiti 2nd Marine Regiment in Haiti | United States Haiti | Haitian Rebels | US-allied victory | Woodrow Wilson (March 4, 1913 – March 4, 1921) Warren G. Harding (March 4, 1921 – August 2, 1923) Calvin Coolidge (August 2, 1923 – March 4, 1929) Herbert Hoover (March 4, 1929 – March 4, 1933) Franklin D. Roosevelt (March 4, 1933 – April 12, 1945) |
| United States occupation of the Dominican Republic (1916–1924) Part of the Banana Wars Location: Dominican Republic US Marines in the Occupation of the Dominican Republic. | United States | Dominican Republic | US victory | Woodrow Wilson (March 4, 1913 – March 4, 1921) Warren G. Harding (March 4, 1921 – August 2, 1923) Calvin Coolidge (August 2, 1923 – March 4, 1929) |
| World War I (1914–1918, direct U.S. involvement in 1917–1918) Location: Europe, Africa, Asia, Middle East, the Pacific Islands, and coast of North and South America US troops firing 37mm gun during an advance against German entrenched positions. | French Republic British Empire  United Kingdom  Canada  Newfoundland  Australia  New Zealand  Ceylon  India  South Africa  Kingdom of Italy United States (since 1917) Russian Empire (until 1917) Empire of Japan Kingdom of Serbia Kingdom of Montenegro Kingdom of Romania Kingdom of Greece Belgium Portugal Republic of Armenia Sultanate of Egypt Idrisid Emirate of Asir Emirate of Nejd and Hasa Kingdom of Hejaz Republic of China Siam Brazil | German Empire Austro-Hungarian Empire Ottoman Empire Tsardom of Bulgaria | US-allied victory First time in history, the United States sent soldiers abroad to defend foreign soil The October Revolution in 1917 in Russian Empire On December 13, 1918, Woodrow Wilson arrived to France and became the first U.S. president to visit Europe while in office to take part in World War I peace negotiations Fall of the German, Ottoman, and Austro-Hungarian empires Formation of new countries in Europe and the Middle East Transfer of German colonies and regions of the former Ottoman Empire to other powers Establishment of the League of Nations, which led to the creation of today's United Nations | Woodrow Wilson |
| Russian Civil War (1917–1923, direct U.S. involvement in 1918–1920, [American Expeditionary Force, North Russia and American Expeditionary Force, Siberia]) Location: Russia US troops march through Russia before the Battle of Romanovka. | White Movement Mountain Republic Makhnovshchina Right SRs Left SRs Green armies Czechoslovakia  British Empire  United Kingdom  Canada  Australia  India  South Africa Empire of Japan  Kingdom of Greece  United States  French Republic  Kingdom of Serbia  Romania  Italy  Poland  Estonia  Latvia  China Mongolia | Russian SFSR  Far Eastern Republic Mongolian Communists Makhnovshchina Left SRs Green armies | Bolshevik victory The October Revolution led by the Bolshevik Party of Vladimir Lenin The Communist Massacre of the Russian Royal Family Fall of the Russian Empire Establishment of the Soviet Union Victory for the Bolshevik Red Army in Russia, Ukraine, Belarus, South Caucasus, Central Asia, Tuva, and Mongolia; incorporation of those territories into the Russian SFSR and Soviet Union Victory for pro-independence movements in Finland, Estonia, Latvia, Lithuania, and Poland; expulsion of Bolshevik forces from those territories | Woodrow Wilson |
| Posey War (1923) Part of the American Indian Wars Location: Utah Ute and Paiute prisoners of war. | United States | Ute Paiute | US victory Last Indian uprising | Warren G. Harding |
| World War II (1939–1945, direct U.S. involvement in 1941–1945) Location: Europe, Pacific Ocean, Atlantic Ocean, Southeast Asia, East Asia, Middle East, Mediterranean, North Africa, Oceania, North and South America Six United States Marines raising the U.S. flag atop Mount Suribachi during the Battle of Iwo Jima. | Allies:  French Republic British Empire  United Kingdom  Canada  Australia  New Zealand  India and others  United States (since 1941) Soviet Union (since 1941) Republic of Poland Czechoslovak Republic Kingdom of Yugoslavia Kingdom of Greece Denmark Norway Netherlands Belgium Luxembourg Republic of Cuba Republic of Haiti Argentina Brazil Mexico Chile Peru United States of Venezuela Liberia Kingdom of Egypt Ethiopian Empire Union of South Africa Sultanate of Muscat and Oman Kingdom of Nepal Republic of China Mongolian People's Republic Commonwealth of the Philippines Viet Minh Korean Provisional Government | Axis:  Nazi Germany Empire of Japan Kingdom of Italy Kingdom of Hungary Kingdom of Romania Slovak Republic Tsardom of Bulgaria Independent State of Croatia Finland French State Hellenic State Quisling's Norway Manchukuo Mengjiang RNG China Thailand Philippine Republic Empire of Vietnam Kingdom of Kampuchea State of Burma Free India Kingdom of Iraq | US-allied victory The end of America's isolationism after attack on Pearl Harbor in 1941 The United States was first referred to as a superpower in 1944 In July 1945, the United States conducted the first nuclear test, and one month later became the first and only country to use nuclear weapons in war Collapse of Nazi Germany Fall of Japanese Empire and Italian Empire End of Fascism in Europe and Japanese militarism in Asia–Pacific Creation of the United Nations Creation of the NATO Creation of the European Coal and Steel Community, which led to the creation of today's European Union Beginning of the Atomic Age Emergence of the United States and the Soviet Union as rival superpowers until dissolution of the Soviet Union The Iron Curtain separated Eastern and Western Europe (1945–1991) Beginning of the Cold War (1947–1991) Germany and Austria, as well as their capitals, Berlin and Vienna, respectively, divided into four occupation zones each, one for each of the United States, France, the United Kingdom, and the Soviet Union | Franklin D. Roosevelt (March 4, 1933 – April 12, 1945) Harry S. Truman (April 12, 1945 – January 20, 1953) |
| Operation Beleaguer (1945-1949) Part of the Chinese Civil War and the Cold War Location: Hebei and Shandong provinces, China Marines in Qingdao during Operation Beleaguer | United States Republic of China | China | Inconclusive/Other Result U.S. Withdrawal from China Japanese and Korean Soldiers successfully disarmed and repatriated Subsequent PRC Victory | Harry S. Truman |
| Puerto Rican Nationalist Party insurgency (1950-1954) Part of political violence in the United States during the Cold War Location: Puerto Rico and Washington, D.C., United States | United States | Puerto Rican Nationalist Party | United States victory Insurrection suppressed | Harry S. Truman |
| Korean War (1950–1953) Part of the Cold War Location: Korea U.S. soldier fires a 75mm recoilless rifle, near Oetlook-tong, Korea, in support of infantry units directly across the valley. | South Korea  United Nations United States United Kingdom Australia Belgium Canada France Philippines Colombia Ethiopian Empire Kingdom of Greece Luxembourg Netherlands New Zealand Spanish State Union of South Africa Thailand Turkey | North Korea  China Soviet Union Supported by:  East Germany  Czechoslovak Republic  Hungarian People's Republic  Polish People's Republic  Romanian People's Republic  People's Republic of Bulgaria  Mongolian People's Republic | Inconclusive/Other Result UNSC Resolution 83 goals achieved North Korean invasion of South Korea repelled South Korean statehood preserved Subsequent United Nations invasion of North Korea repelled Subsequent Chinese-North Korean invasion of South Korea repelled Korean Armistice Agreement Korean Demilitarized Zone established in 1953 | Harry S. Truman (April 12, 1945 – January 20, 1953) Dwight D. Eisenhower (January 20, 1953 – January 20, 1961) |
| Vietnam War (1955–1964, 1965–1973, 1974–1975) Part of the Cold War and Indochina Wars Location: Vietnam, Cambodia, and Laos 1st Cavalry Division, Battle of Ia Drang, 1965. | South Vietnam United States South Korea Australia New Zealand Thailand Philippines Kingdom of Laos Khmer Republic | North Vietnam Viet Cong Pathet Lao Khmer Rouge China Soviet Union North Korea Supported by:  East Germany  Czechoslovak Socialist Republic  Hungarian People's Republic  Polish People's Republic  Socialist Republic of Romania  People's Republic of Bulgaria  Cuba | North Vietnam-allied victory Withdrawal of American forces from Indochina North Vietnamese victory over South Vietnam Reunification of North Vietnam and South Vietnam into the communist state Socialist Republic of Vietnam Communist governments take power also in Laos and Cambodia | Dwight D. Eisenhower (January 20, 1953 – January 20, 1961) John F. Kennedy (January 20, 1961 – November 22, 1963) Lyndon B. Johnson (November 22, 1963 – January 20, 1969) Richard Nixon (January 20, 1969 – August 9, 1974) Gerald Ford (August 9, 1974 – January 20, 1977) |
| Laotian Civil War (1959–1975) Part of the Indochina Wars and Cold War Location: Laos A U.S. Air Force Bell UH-1P from the 20th Special Operations Squadron "Green Hornets" at a base in Laos, 1970. | Kingdom of Laos United States South Vietnam Thailand Supported by: Philippines Taiwan | Pathet Lao North Vietnam Supported by:  China  Soviet Union  East Germany  Czechoslovak Socialist Republic  Socialist Republic of Romania  Cuba | Pathet Lao-allied victory Fall of the Kingdom of Laos Establishment of the communist state Lao People's Democratic Republic | Dwight D. Eisenhower (January 20, 1953 – January 20, 1961) John F. Kennedy (January 20, 1961 – November 22, 1963) Lyndon B. Johnson (November 22, 1963 – January 20, 1969) Richard Nixon (January 20, 1969 – August 9, 1974) Gerald Ford (August 9, 1974 – January 20, 1977) |
| Permesta Rebellion (1958–1961) Location: Indonesia The capture of Allen Lawrence Pope. | Permesta United States | Indonesia | Indonesian government victory Permesta surrendered to Indonesia government | Dwight D. Eisenhower |
| Lebanon crisis (1958) Location: Lebanon US Marine sits in a foxhole and points his machine gun toward Beirut. | Lebanon United States | Lebanese opposition: INM LCP PSP | US-allied victory US-Lebanese occupation of the port and international airport of Beirut | Dwight D. Eisenhower |
| Bay of Pigs Invasion (1961) Part of the Cold War Location: Cuba A4D-2 Skyhawks in flight over USS Essex during the Bay of Pigs Invasion in April 1961. | CDRF United States | Cuba | Cuban government victory Failure to topple Castro's government United States sponsored Brigade 2506 (Cuban exiles) defeated Increased cooperation between Cuba and the Soviet Union | John F. Kennedy |
| Operation Dragon Rouge (1964) Part of the Simba Rebellion during the Congo Crisis and the Decolonization of Africa during the Cold War Location: Stanleyville, Congo-Léopoldville Belgian paratroopers exiting out of U.S. C-130 Hercules after returning from Operation Dragon Rouge | United States Belgium Supported by: Democratic Republic of the Congo | Simba rebels | US-allied victory Most Hostages rescued Rebels Defeated | Lyndon B. Johnson |
| Dominican Civil War (1965–1966) Location: Dominican Republic US soldiers push a child underneath a Jeep to protect him during a firefight in Santo Domingo on May 5, 1965. | Dominican Loyalists United States IAPF  Brazil  Paraguay  Nicaragua  Costa Rica  El Salvador  Honduras | Dominican Constitutionalists | US-allied victory Fall of the Bosch regime Joaquín Balaguer elected as the new president | Lyndon B. Johnson |
| Korean DMZ Conflict (1966–1969) Part of the Korean conflict and the Cold War Location: Korean Demilitarized Zone ROK and US troop stationed at the DMZ, 1967. | South Korea United States | North Korea | US-allied victory North Korean failure to launch an insurgency in South Korea | Lyndon B. Johnson (November 22, 1963 – January 20, 1969) Richard Nixon (January 20, 1969 – August 9, 1974) |
| Cambodian Civil War (1967–1975) Part of the Cold War Location: Cambodia US troops and tanks entering town in Cambodia. | Kingdom of Cambodia (1967–1970) Khmer Republic (1970–1975) United States South Vietnam Supported by:  Australia  Canada  France  Thailand | National United Front of Kampuchea Khmer Rouge Khmer Rumdo Khmer Việt Minh North Vietnam Việt Cộng Supported by:  China  Soviet Union  North Korea  Czechoslovak Socialist Republic  Socialist Republic of Romania  Cuba | Khmer Rouge-allied victory Fall of the Kingdom of Cambodia Creation but eventual collapse of the Khmer Republic Creation of the Democratic Kampuchea Beginning of the Cambodian genocide | Lyndon B. Johnson (November 22, 1963 – January 20, 1969) Richard Nixon (January 20, 1969 – August 9, 1974) Gerald Ford (August 9, 1974 – January 20, 1977) |
| Multinational intervention in Lebanon (1982–1984) Location: Lebanon US Marines of the 32nd Marine Amphibious Unit come ashore to assume the management of the port of Beirut. | Lebanese Armed Forces UNIFIL Multinational Force in Lebanon:  United States  France  United Kingdom  Italy  Israel Lebanese Front Army of Free Lebanon SLA | Lebanese National Movement Jammoul PLO Amal Movement  Iran Islamic Revolutionary Guard Corps Hezbollah Islamic Jihad Organization Islamic Unification Movement  Syria Arab Deterrent Force  Saudi Arabia  Sudan  United Arab Emirates  Libya  South Yemen | Syrian-allied victory Multinational forces fail to prevent collapse of Lebanese Army into Syrian- or Israeli- supported militias Multinational forces evacuated after the US embassy and US Marine barracks are bombed by the Islamic Jihad Organization Multinational forces oversee withdrawal of Palestine Liberation Organization Humanitarian crisis in Southern Lebanon Civil war continues until 1990 President Hafez al-Assad continues his occupation of Lebanon until his son and later president Bashar al-Assad orders a withdrawal from the country | Ronald Reagan (January 20, 1981 – January 20, 1989) |
| United States invasion of Grenada (1983) Part of the Cold War Location: Grenada American soldiers in artillery positions at Grenada. | United States Barbados Jamaica Antigua and Barbuda Dominica Saint Kitts and Nevis Saint Lucia Saint Vincent and the Grenadines | PRG of Grenada Cuba Military advisors: List  Soviet Union  Bulgaria  East Germany Libya | US-allied victory Military dictatorship of Hudson Austin deposed Defeat of Cuban military presence Restoration of constitutional government | Ronald Reagan |
| Bombing of Libya (1986) Location: Libya USAF F-111 taking off for Libya | United States | Libya | Inconclusive Both sides claimed victory Failed Libyan Scud missile response Muammar Gaddafi survives U.S. successfully destroyed Iraqi ground targets in response to the West Berlin discotheque bombing | Ronald Reagan |
| Tanker War (1987–1988) Part of the Iran–Iraq War Location: Persian Gulf Iranian frigate Sahand after being attacked by U.S. aircraft. | United States | Iran | US victory U.S. Navy sinks several ships and damages Iranian military installations used to attack U.S. and U.S. allied civilian shipping U.S. Navy vessel USS Vincennes shoots down civilian Iran Air Flight 655 killing all 290 passengers, among them 66 children Iran–Iraq War ends in August 1988 following UN enforcement of the ceasefire | Ronald Reagan |
| United States invasion of Panama (1989–1990) Location: Panama U.S. troops prepare to take a neighborhood in Panama City, December 1989. | United States Panamanian Opposition | Panama | US-allied victory Dictator Manuel Noriega deposed | George H. W. Bush |
| Gulf War (1990–1991) Location: Iraq, Kuwait, Saudi Arabia, and Israel M1 Abrams tanks of the 3rd Armored Division advance on Medina Ridge. | United States United Kingdom Kuwait Saudi Arabia France Canada Egypt Syria Qatar Bahrain United Arab Emirates Oman | Iraq | US-allied victory Iraqi withdrawal from Kuwait; Emir Jaber III restored Sanctions against Iraq | George H. W. Bush |
| Iraqi No-Fly Zone Enforcement Operations (1991–2003) Location: Iraq A Tomahawk cruise missile is fired from an Arleigh Burke-class destroyer during Operation Desert Fox in December 1998. | United States United Kingdom France Australia Belgium Netherlands Saudi Arabia Turkey Italy | Iraq | US-allied victory Periodic depletion of Iraqi air defenses | George H. W. Bush (January 20, 1989 – January 20, 1993) Bill Clinton (January 20, 1993 – January 20, 2001) George W. Bush (January 20, 2001 – January 20, 2009) |
| First U.S. Intervention in the Somali Civil War (1992–1995) Part of the Somali civil war (1991–present) Location: Somalia U.S. Marines on patrol in Somalia. | United States United Kingdom Spain Saudi Arabia Malaysia Pakistan Italy India Greece Germany France Canada Botswana Belgium Australia New Zealand | Somali National Alliance | Somali victory Failure to capture SNA leader Mohamed Farrah Aidid; specific Aidid lieutenants captured Withdrawal of U.S. forces 5 months after losses in the Battle of Mogadishu The UN mandate saved close to 100,000 lives, before and after U.S. withdrawal Civil war is ongoing | George H. W. Bush (January 20, 1989 – January 20, 1993) Bill Clinton (January 20, 1993 – January 20, 2001) |
| Bosnian War and Croatian War (1992–1995) Part of the Yugoslav Wars Location: Bosnia and Herzegovina and Croatia A U.S. Army M-113 Armor Personnel Carrier prepares to pull an armored Humvee out of the mud in Bosnia and Herzegovina. | Bosnia and Herzegovina Herzeg-Bosnia  Croatia  United States Belgium Canada Denmark France Germany Italy Luxembourg Netherlands Norway Portugal Spain Turkey United Kingdom | Republika Srpska Serbian Krajina Western Bosnia | Inconclusive/Other Result Military stalemate in Bosnia Victory in Croatia Dayton Accords Internal partition of Bosnia and Herzegovina Over 101,000 dead, 65,000 Bosniaks, 28,000 Serbs, 8,000 Croats Deployment of NATO-led IFOR to uphold the peace agreement High Representative for Bosnia and Herzegovina established to implement the peace agreement Yugoslav army formally withdrew from Croatia from January 1992 under the Sarajevo Agreement Croatian forces regained control over most of Republic of Serbian Krajina-held territory The Croatian government gains control over the vast majority of territory previously held by rebel Serbs, with the remainder coming under UNTAES control. | George H. W. Bush (January 20, 1989 – January 20, 1993) Bill Clinton (January 20, 1993 – January 20, 2001) |
| Intervention in Haiti (1994–1995) Location: Haiti U.S. Marine guarding an area in Haiti. | United States Poland Argentina | Haiti | US-allied victory Reinstatement of Jean-Bertrand Aristide as president of Haiti | Bill Clinton |
| Kosovo War (1998–1999) Part of the Yugoslav Wars Location: Serbia A U.S. Air Force F-15E Strike Eagle takes off for an air strike mission. | KLA AFRK Albania Croatia United States Belgium Canada Czech Republic Denmark France Germany Hungary Italy Luxembourg Netherlands Norway Portugal Poland Spain Turkey United Kingdom | FR Yugoslavia | Inconclusive/Other Result Ceasefire reached through Kumanovo Agreement of June 1999. after Russian and Finnish envoys visit Belgrade Yugoslav forces pull out of Kosovo UN Resolution 1244 confirming Kosovo as de jure part of FRY De facto separation of Kosovo from FR Yugoslavia under UN administration Return of Albanian refugees after attempted ethnic cleansing of Albanians KLA veterans join the UÇPMB, starting the Preševo insurgency Around 200,000 Serbs, Romani, and other non-Albanians fleeing Kosovo and many of the remaining civilians becoming victims of abuse Three Chinese journalists were killed in United States bombing of the Chinese embassy in Belgrade | Bill Clinton |
* ↑ Advisory role from the forming of the MAAG in Vietnam to the Gulf of Tonkin incident.
* ↑ Direct U.S. involvement ended in 1973 with the Paris Peace Accords. The Paris Peace Accords of January 1973 saw all U.S forces withdrawn; the Case–Church Amendment, passed by the U.S Congress on August 15, 1973, officially ended direct U.S military involvement .
* ↑ The war reignited on December 13, 1974, with offensive operations by North Vietnam, leading to victory over South Vietnam in under five months.

## 21st-century wars

| Conflict | Allies | Belligerent | Result for the United States and its Allies | Presidents of the United States |
| War in Afghanistan (2001–2021) Part of the war on terror and the Afghan conflict Location: Afghanistan U.S. soldiers from A Company, 101st Airborne Division Special Troop Battalion air assault into a village inside Jowlzak valley in Afghanistan. | Resolute Support Mission Islamic Republic of Afghanistan United States Canada United Kingdom Australia New Zealand Norway Croatia Czech Republic Denmark Georgia Germany Netherlands Italy Romania Slovakia Spain Turkey Formerly: ISAF | Taliban Haqqani network Allied groups Hezb-e-Islami Gulbuddin al-Qaeda Islamic Jihad Union Islamic Movement of Uzbekistan Taliban splinter groups Fidai Mahaz IS-Affiliates: Islamic State – Khorasan Province 2001 Invasion: Islamic Emirate of Afghanistan Talibani Army Salafist extremists 055 Brigade | Afghan Taliban victory United States invasion of Afghanistan (2001) Destruction of al-Qaeda and Taliban militant training camps (2001) Fall of the Taliban government (2001) and Establishment of the Islamic Republic of Afghanistan Start of Taliban insurgency Osama bin Laden killed by SEAL Team Six operators in Abbottabad, Pakistan in May 2011 "Afghanization" of Afghan conflict. Withdrawal of most US troops by 2014 End of Operation Enduring Freedom; start of Operation Freedom's Sentinel. End of US and ISAF led combat mission; beginning of NATO-led training and assistance mission. Doha Agreement and progressive withdrawal of remaining US troops after 2020 Renewed Taliban offensive in 2021 Taliban forces capture Kabul on August 15, 2021, and overthrow the U.S.-backed Islamic Republic of Afghanistan Re-establishment of the Taliban-run Islamic Emirate of Afghanistan Start of Operation Allies Refuge On August 30, 2021, the last American military plane departed Afghanistan. Billions of dollars of foreign-origin military hardware that was formerly in custody of the Islamic Republic of Afghanistan seized by Taliban | George W. Bush (October 7, 2001 – January 20, 2009) Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) |
| US intervention in Yemen (2002–present) Part of the war on terror and the Yemeni Civil War Location: Yemen MQ-9 Predator commonly used in drone strikes in Yemen. | United States CIA  USAF Saudi-led coalition:  Saudi Arabia  United Arab Emirates  Bahrain  Kuwait  Qatar  Jordan  Morocco  Sudan  Senegal Supported by:  France  Canada  Germany  United States  United Kingdom Logistical Support:  Djibouti  Eritrea  Somalia  France  Pakistan(alleged) In support of: Cabinet of Yemen Yemen Armed Forces (pro-Hadi) Yemeni Air Force Popular Resistance United States-led coalition:  United States  United Kingdom  Australia  Bahrain  Canada  Denmark  Germany  Greece  South Korea  Netherlands  New Zealand  Norway  Seychelles  Singapore  Sri Lanka Supported by:  France  Italy  India | Al-Qaeda AQAP Ansar al-Sharia Al-Qaeda Emirate in Yemen Aden-Abyan Islamic Army Council of Sunni Scholars and al-Jama'a Hadrami Domestic Council faction Al-Dhahab tribesmen Supported by: Al-Shabaab (2009–present) (alleged) Al-Qaeda in the Islamic Maghreb (2009–2017) Al-Qaeda in the Indian Subcontinent (2014–present) Al-Nusra Front (2012–2017) Alleged Support:  Iran (denied)  Qatar (denied)  Islamic State of Iraq and the Levant (from 2014) Military of ISIL Wilayah al-Yemen Wilayat Sanaa Wilayat Aden-Abyan Wilayah Lahij Wilayah Green Brigade Wilayah al-Bayda Wilayah Shabwah Wilayah Ataq Wilayah Hadramawt Revolutionary Committee/Supreme Political Council Houthi movement Yemen Armed Forces Yemeni Republican Guard Supported by: Iran Syria North Korea Qatar Russia Hezbollah Cuba Eritrea Oman Libya (until 2011) | Ongoing US Intervention against jihadists 378 drone strikes confirmed 57 al-Qaeda in the Arabian Peninsula leaders confirmed killed Numerous al-Qaeda in the Arabian Peninsula bases destroyed Most recent drone strike against al-Qaeda launched in February 2023 US Intervention against Houthi movement Saudi-led coalition forces intervene in Yemen in 2015 to restore the internationally recognized Yemen government led by President Abdrabbuh Mansur Hadi United States support the Saudi Arabian-led intervention primarily through arms sales and technical assistance U.S. Army Special Forces deployed to the Saudi Arabia-Yemen border to help defeat the Houthi rebels in 2018. Missile strikes against Houthi-controlled territory beginning in 2024 | George W. Bush (October 7, 2001 – January 20, 2009) Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) Donald Trump (January 20, 2025 – Incumbent) |
| Iraq War (2003–2011) Part of the Iraqi conflict and the war on terror Location: Iraq U.S. soldiers at the Hands of Victory monument in Baghdad. | Post-invasion (2003–2011)  Iraq United States United Kingdom MNF–I (2003–09) Kurdistan Region Awakening Council Invasion phase (2003) Coalition of the willing United States United Kingdom Australia Poland Kurdistan Region KDP PUK Iraqi National Congress Free Iraqi Forces | Post-invasion (2003–2011) Al-Qaeda in Iraq Islamic Army in Iraq Islamic State of Iraq Mahdi Army Naqshbandi Army Hamas of Iraq Jaysh al-Mujahideen 1920 Revolution Brigades Jamaat Ansar al-Sunna Invasion phase (2003) Republic of Iraq MEK | Inconclusive/Other Result Invasion and occupation of Iraq Overthrow of Ba'ath Party government Execution of Saddam Hussein Emergence of significant insurgency, rise of al-Qaeda in Iraq, and severe sectarian violence Subsequent reduction in violence and depletion of al-Qaeda in Iraq Establishment of democratic elections and formation of new Shia-led government U.S.–Iraq Status of Forces Agreement Withdrawal of U.S. forces from Iraq in 2011 Stronger Iranian influence in Iraq Escalation of sectarian insurgency after U.S. withdrawal leading to the rise of the Islamic State of Iraq and the Levant, the successor of al-Qaeda in Iraq Return of US forces to Iraq in 2014 | George W. Bush (January 20, 2001 – January 20, 2009) Barack Obama (January 20, 2009 – January 20, 2017) |
| US intervention in the War in North-West Pakistan (2004–2018) Part of the Insurgency in Khyber Pakhtunkhwa, the War in Afghanistan and the War on terror Location: Pakistan MQ-1 Predator drones typically used in covert bombing operations in Pakistan. | Pakistan  United States  USAF CIA Supported by:  United Kingdom | Taliban Tehrik-i-Taliban Pakistan TNSM Haqqani network al-Qaeda Lashkar-e-Islam Foreign Mujahideen Uzbek Islamic Movement Turkistan Islamic Party Islamic State affiliates | US-allied victory Most recent drone strike launched in July 2018. 81 high-level insurgent leaders and thousands of low-level insurgents killed Deaths of Afghan Taliban head Akhtar Mansour, and successive TTP heads Baitullah Mehsud and Hakimullah Mehsud. Deaths of hundreds of Pakistani civilians. Destruction of numerous insurgent camps and safe havens 5 drone strikes in 2017, followed by one in 2018 and none in 2019 Substantial reduction in insurgent activity by 2017. 430 drone strikes confirmed | George W. Bush (January 20, 2001 – January 20, 2009) Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) |
| Second US Intervention in the Somali Civil War (2007–present) Part of the War on Terror Operation Enduring Freedom – Horn of Africa during the Somali Civil War Location: Somalia U.S. Marines establish security positions at Baledogle Airfield in Somalia, December 2020. | United States  United States Army  United States Marine Corps  United States Air Force  United States Navy CIA In support of: Ethiopia  Somalia ATMIS (since 2022)  Burundi  Djibouti  Ethiopia  Kenya  Uganda AMISOM (until 2022)  Burundi  Djibouti (from 2011)  Ethiopia (from 2006)  Ghana  Kenya (from 2011, officially from 2012)  Nigeria (from 2010)  Sierra Leone (from 2013)  Uganda (until 2017) | Islamic Courts Union (until 2008)  al-Shabaab al-Qaeda Alleged support: Iran North Korea Hizbul Islam (until 2009–10; 2012–14) Islamic State in Somalia | Ongoing U.S. backed Ethiopian invasion and rise of Al-Shabaab (2006–2009) African Union Intervention (2007–2022) Kenyan intervention (2011–2012) Newly formed federal government established in 2012 Majority of US Troops withdraw in January 2021 Redeployment of US troops in 2022 African Union Transition Mission in 2022 Drone strikes targeting al-Shabaab and Islamic State – Somalia Province United States supports Somali forces and a multinational African Union force with drone strikes, intelligence and training | George W. Bush (January 20, 2001 – January 20, 2009) Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) Donald Trump (January 20, 2025 – Incumbent) |
| Operation Ocean Shield (2009–2016) Location: Indian Ocean A tall plume of black smoke rises from a destroyed pirate vessel that was struck by USS Farragut in March 2010. | NATO  United States  Belgium  Canada  Denmark  Germany  Greece  Italy  Netherlands  Norway  Portugal  Spain  Turkey  United Kingdom  Australia China Colombia India Indonesia Japan Malaysia New Zealand Oman Pakistan Russia Saudi Arabia Seychelles Singapore Somalia South Korea Ukraine | Somali pirates | US-allied victory Number of pirate attacks dramatically decreased The US Office of Naval Intelligence have officially reported that in 2013, only 9 incidents of piracy were reported and that none of them were successfully hijacked Piracy drops 90% | Barack Obama (January 20, 2009 – January 20, 2017) |
| International intervention in Libya (2011) Part of the First Libyan Civil War Location: Libya U.S. vessels launch missiles in support of Anti-Gaddafi rebels during the First Libyan Civil War. | NATO  Belgium  Bulgaria  Canada  Denmark  France  Greece  Italy  Netherlands  Norway  Romania  Spain  Turkey  United Kingdom  United States  Jordan Qatar Sweden United Arab Emirates Anti-Gaddafi forces | Libyan Arab Jamahiriya Armed Forces Pro-Gaddafi militias Mercenaries (alleged) | US-allied victory Overthrow and killing of Muammar Gaddafi by Anti-Gaddafi forces. Collapse of the Great Socialist People's Libyan Arab Jamahiriya. Tensions between Libyan factions following the fall of Gaddafi lead to renewed civil war in 2014 Continuation of the Libyan Crisis | Barack Obama (January 20, 2009 – January 20, 2017) |
| Operation Observant Compass (2011–2017) Part of the Lord's Resistance Army insurgency and War on Terror Location: Uganda, the Democratic Republic of the Congo, South Sudan, and the Central African Republic U.S. Marine Sgt. Joseph Bergeron, a task force combat engineer, explains combat marksmanship tactics to a group of Ugandan soldiers. | United States U.S. Army U.S. Marine Corps U.S. Air Force U.S. Navy U.S. Africa Command Uganda Democratic Republic of the Congo South Sudan Central African Republic | Lord's Resistance Army | US-allied victory Founder and leader of the LRA Joseph Kony goes into hiding Senior LRA commander Dominic Ongwen surrenders to American forces in the Central African Republic and is tried at the Hague Majority of LRA installations and encampments located in South Sudan and Uganda abandoned and dismantled Small scale LRA activity continues in eastern DR Congo, and the Central African Republic | Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) |
| US military intervention in Niger (2013–2024) Part of the Jihadist insurgency in Niger and War on terror (Operation Juniper Shield) Location: Niger U.S. and Nigerien soldiers training in April 2018 | United States U.S. Armed Forces In support of: Niger (until coup d'état) France Operation Barkhane (2014–23) Training: European Union EUCAP Sahel Niger (2012–24) Canada Operation Naberius (2013–24) Belgium Germany (2015–2024) Italy | Jihadists: Al-Qaeda Nusrat al-Islam  ISIL Islamic State – West Africa Province Islamic State in the Greater Sahara Boko Haram (partially aligned with ISIL since 2015) | Nigerien Junta Victory Niger's junta ended a military agreement that allowed US troops to be deployed in the country US lost access to Niger Air Base 201, largest drone base in Africa built by the United States for $110 million Beginning of new military cooperation between Niger and Russia Jihadi groups linked to Al-Qaeda, the Islamic State group and Boko Haram remained still active in Niger in 2024 | Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) |
| US-led intervention in Iraq (2014–2021) Part of the War against the Islamic State (Operation Inherent Resolve), the War in Iraq (2013–2017), Islamic State insurgency in Iraq (2017–present), and the War on terror Location: IraqU.S. soldiers use a rooftop as an observation post, during the Battle of Mosul in Iraq, March 2017. | Coalition of foreign countries: CJTF–OIR  United States  Australia  Belgium  Canada (2014–16)  Denmark  France  Germany  Italy  Jordan  Morocco (2014–16)  Netherlands  New Zealand  United Kingdom  Turkey (2014–17) Local forces:  Iraq Iraqi Armed Forces ISOF IrAF Nineveh Plain Protection Units Peshmerga | Islamic State Of Iraq and The Levant White Flags | US-allied victory Tens of thousands of ISIL fighters killed 14,616 U.S. and allied airstrikes on ISIL positions in Iraq Heavy damage dealt to ISIL forces; military defeat in Iraq Iraq declares military victory against ISIL on 9 December 2017 Low-intensity ISIL insurgency following December 2017 Multinational humanitarian and arming of ground forces efforts Ongoing U.S.–led Coalition advising and training of Iraqi and Kurdish ground forces U.S.-led coalition forces begin discussing a withdrawal from Iraq following March 2020 U.S. maintains limited military presence, approximately 2,500 U.S. military personnel remain in Iraq as of December 2021, providing assistance, advice and training to Iraqi forces Coalition ends combat mission in December 2021, but remain in an advisory and assistance capacity Iraqi government forces regain control of all parts of Iraq previously controlled by ISIL | Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) |
| US intervention in the Syrian civil war (2014–present) Part of Operation Inherent Resolve, the war against the Islamic State, and the foreign involvement in the Syrian civil war Location: Syria U.S. 1st Battalion, 6th Infantry Regiment troops conduct area reconnaissance patrol in Syria, February 2021. | CJTF–OIR United States Turkey Free Syrian Army (2011–present) Supported by:  United Kingdom  France Former participants:  Canada (2014–16) Bahrain (2014–16) Belgium (2014–17) Germany (2015–22) Saudi Arabia (2014–2018) United Arab Emirates (2014–2018) Qatar (2014–16) Morocco (2014–16) Australia (2014–17) Netherlands (2014–19) Denmark (2016–23) Italy (2018) Local ground forces Syrian Democratic Forces YPG YPJ Syriac Military Council Al-Sanadid Forces Euphrates Volcano (2014–15) | Ba'athist Syria Russia (until 30 November 2024) Hezbollah  Iran (until 6 December 2024) Supported by: Islamic Resistance in Iraq Popular Mobilization Forces Kata'ib Hezbollah (limited 2019 and 2021 strikes) Islamic Front (2013–2015) Syrian Salvation Government (2017–2024) Ahrar al-Sham (Nov. 2014 airstrikes, intentionality disputed) Tahrir al-Sham (2017–present) Jaysh al-Sunna (2015–2017)  Islamic State al-Qaeda al-Nusra Front (2014–2017) Khorasan group Rouse the Believers Operations Room (2018–2020) Hurras al-Din (2018–present) Jund al-Aqsa (2014–17) Turkistan Islamic Party | Ongoing US Intervention against jihadists 19,786+ US and allied airstrikes, over 16,000 hitting ISIL positions Thousands of ISIS targets destroyed and thousands more militants captured or killed Deployment of U.S. Marines and Special Forces in 2015 ISIL lose Mosul and Raqqa (2017), then other most of territory in Iraq and then Syria United States declares military victory against ISIS on December 18, 2018 ISIS resurgence in 2019 Death of ISIS caliphs: Abu Bakr al-Baghdadi in 2019, Abu Ibrahim al-Hashimi al-Qurashi and Abu al-Hasan al-Hashimi al-Qurashi in 2022 and Abu al-Hussein al-Husseini al-Qurashi in 2023 Attacks on US bases in Syria in 2023 and 2024 As of January 2025, approximately 2,000 U.S. troops remain in Syria to combat last ISIS fighters and protect allied Kurdish-led Syrian Democratic Forces. US Intervention against Assad government Ghouta chemical attack leading to OPCW-UN Joint Mission in Syria (2013–2014) Beginning of OPCW Fact-Finding Mission in Syria in 2014 American support for anti-government rebels Chemical attacks attributed to the Assad government leads to condemnation and threats of measures to enforce the chemical weapons convention and the Geneva protocol to which Syria is a party Khan Shaykhun chemical attack results in a retaliatory naval strike on the Syrian government-controlled Shayrat Airbase Douma chemical attack results in retaliatory strikes Various confrontations and airstrikes on forces belonging to, or allied with the Syrian government Russian direct military involvement in the Syrian civil war after a request for military support by the government of Bashar al-Assad in 2015 US-backed rebels enter Damascus and topple the Ba'athist Syria regime Fall of the Assad regime in 2024 | Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) Joe Biden (January 20, 2021 – January 20, 2025) Donald Trump (January 20, 2025 – Incumbent) |
| US intervention in Libya (2015–2019) Part of the International campaign against ISIL and the Second Libyan Civil War Location: Libya An AV-8B Harrier assigned to the 22nd MEU aboard USS Wasp taking part in Operation Odyssey Lightning on 11 August 2016. | United States U.S. Air Force U.S. Navy U.S. Marine Corps U.S. Special Operations Forces Libya Government of National Accord  United Kingdom SAS SBS  France DGSE Commandos Marine | ISIL in Libya Wilayah al-Tarabulus Wilayah al-Fizan Wilayah Barqah Al-Qaeda in the Islamic Maghreb | US-allied victory Thousands of ISIL targets destroyed ISIL-held territory recaptured; presence minimized Withdrawal of American ground forces | Barack Obama (January 20, 2009 – January 20, 2017) Donald Trump (January 20, 2017 – January 20, 2021) |
| Operation Prosperity Guardian (2023–present) Part of the Red Sea crisis, and the Yemeni Civil War Location: Red Sea, Gulf of Aden, and Yemen USS Carney engages Houthi missiles. | United States United Kingdom Australia New Zealand Canada Denmark Greece Netherlands Norway Bahrain Singapore Sri Lanka Supported by:  Seychelles | Yemen (SPC)  Yemeni Navy (SPC faction) Houthis | Ongoing United States declares Red Sea conflict with Houthis as largest naval battle since World War II | Joe Biden (January 20, 2021 – January 20, 2025) Donald Trump (January 20, 2025 – Incumbent) |
| Gaza war (2024–present) Part of the Gaza–Israel conflict, the Israeli–Palestinian conflict, and the Middle Eastern crisis (2023–present) Location: Israel and Gaza | Israel United States | Hamas Palestinian Joint Operations Room:  Palestinian Islamic Jihad  Popular Front for the Liberation of Palestine  Democratic Front for the Liberation of Palestine Al-Aqsa Martyrs' Brigades Palestinian Mujahideen Movement | Ongoing Limited U.S. involvement since October 2024; United States stations 100 soldiers to operate advanced anti-missile system in Israel. Ceasefire since 19 January 2025 | Joe Biden (January 20, 2021 – January 20, 2025) Donald Trump (January 20, 2025 – Incumbent) |