Dates indicate the years in which the United States was involved in the war.
War or conflict |
Opponent(s) |
Initial authorization |
Votes |
UNSCR |
President(s) |
Conclusion(s) |
Senate |
House |
American Revolutionary War |
United Kingdom
American Loyalists
Anhalt-Zerbst
Ansbach-Bayreuth
Hanover
Hesse-Hanau
Hesse-Kassel
Brunswick-Wolfenbüttel
Waldeck-Pyrmont
Iroquois
Cherokee |
Declaration of the Causes and Necessity of Taking Up Arms
July 6, 1775 |
- |
- |
- |
President of the Continental Congress
|
Treaty of Paris (1783) |
Northwest Indian War |
Western Confederacy |
|
|
|
- |
George Washington |
Treaty of Greenville 1795 |
Quasi-War |
France |
Act Further to Protect the Commerce of the United States
July 9, 1798 |
|
|
- |
John Adams |
Convention of 1800 (Treaty of Mortefontaine) |
First Barbary War |
Barbary States
Barbary Pirates |
1801 |
|
|
- |
Thomas Jefferson |
"Treaty of Peace and Amity" 1805 |
War of 1812 |
United Kingdom
British North America
Shawnee
Red Sticks
Ojibway
Chickamauga
Meskwaki
Iroquois
Miami
Mingo
Odawa
Kickapoo
Lenape
Mascouten
Potawatomi
Sauk
Wyandot |
June 18, 1812 |
19-13 |
79-49 |
- |
James Madison |
Treaty of Ghent December 24, 1814 |
Second Barbary War |
Algiers
Barbary Pirates |
1815 |
|
|
- |
James Madison |
1816 |
First Seminole War |
Seminole
Spanish Florida |
1817 |
|
|
- |
James Monroe |
1818 |
Winnebago War |
Ho-Chunk |
1827 |
|
|
- |
John Quincy Adams |
Treaty with the Winnebago August 1829 |
Black Hawk War |
British Band |
1832 |
|
|
- |
Andrew Jackson |
Black Hawk Purchase September 21, 1832 |
First Sumatran Expedition |
Cheifdom of Quallah Battoo |
1832 |
- |
- |
- |
Andrew Jackson |
February 9, 1832 |
Second Seminole War |
Seminole
|
1835 |
|
|
- |
Andrew Jackson
Martin Van Buren |
1842 |
Second Sumatran Expedition |
Cheifdom of Quallah Battoo |
1838 |
- |
- |
- |
Martin Van Buren |
1838 |
Mexican-American War |
Mexico |
May 13, 1846 |
40-2 |
173-14 |
- |
James Polk |
Treaty of Guadalupe Hidalgo February 2, 1848 |
Navajo Wars |
Navajo |
1846 |
|
|
- |
John Tyler
James Polk
Zachary Taylor
Millard Fillmore
Franklin Pierce
James Buchanan
Abraham Lincoln |
1863 |
Cayuse War |
Cayuse |
1847 |
|
|
- |
John Tyler
James Polk
Zachary Taylor
Millard Fillmore |
1853 |
Apache Wars |
Apache
Ute
Yavapai |
1851 |
|
|
- |
Zachary Taylor
Millard Fillmore
Franklin Pierce
James Buchanan
Abraham Lincoln
Andrew Johnson
Ulysses Grant
Rutherford Hayes
James Garfield
Chester Arthur
Grover Cleveland
Benjamin Harrison
William McKinley |
1900 |
Bombardment of San Juan del Norte |
Nicaragua |
|
|
|
- |
Franklin Pierce |
July 13, 1854 |
Third Seminole War |
Seminole |
1855 |
|
|
- |
Franklin Pierce
James Buchanan |
1858 |
Second Opium War |
Qing Dynasty |
1856 |
|
|
- |
James Buchanan |
Treaty of Tianjin June 18, 1858
1859 |
Redress for attack on U.S. Navy vessel |
Paraguay |
1859 |
|
|
|
James Buchanan |
|
American Civil War |
Confederate States of America |
April 12, 1861 |
|
|
- |
Abraham Lincoln
Andrew Johnson |
April 9, 1865
Reconstruction
Reconstruction Amendments |
Dakota War |
Dakota Sioux |
1862 |
|
|
- |
Abraham Lincoln |
Surrender at Camp Release
September 26, 1862 |
Colorado War |
Cheyenne
Arapaho |
1863 |
|
|
- |
Abraham Lincoln |
1865 |
Japanese Conflict |
Chōshū Domain |
1863 |
|
|
- |
Abraham Lincoln |
1864 |
Comanche Campaign |
Cheyenne
Arapaho
Comanche
Kiowa |
1867 |
|
|
- |
Andrew Johnson
Ulysses Grant |
1875 |
General Sherman incident |
Joseon Dynasty |
August 1866 |
|
|
- |
Andrew Johnson |
August 1866 |
Red Cloud's War |
Lakota
Cheyenne
Arapaho |
1866 |
|
|
- |
Andrew Johnson |
Treaty of Fort Laramie (1868) |
Korean Expedition |
Joseon Dynasty |
June 10, 1871 |
|
|
- |
Ulysses Grant |
June 11, 1871
Treaty of Amity and Commerce 1882 |
Modoc War |
Modoc |
July 6, 1872 |
|
|
- |
Ulysses Grant |
June 4, 1873 |
Black Hills War |
Lakota
Northern Cheyenne
Arapaho |
1876 |
|
|
- |
Ulysses Grant |
1877 |
Nez Perce War |
Nez Perce |
1877 |
|
|
- |
Ulysses Grant |
1877 |
Bannock War |
Bannock
Shoshone |
1878 |
|
|
- |
Rutherford B. Hayes |
1878 |
Cheyenne War |
Cheyenne |
1878 |
|
|
- |
Rutherford B. Hayes |
1879 |
Sheepeater Indian War |
Shoshone |
1879 |
|
|
- |
Rutherford B. Hayes |
1879 |
White River War |
Ute |
1879 |
|
|
- |
Rutherford B. Hayes |
1880 |
Ghost Dance War |
Sioux |
1890 |
|
|
- |
Benjamin Harrison |
1891 |
Spanish-American War
|
Spain |
April 25, 1898 |
42-35 |
310-6 |
- |
William McKinley |
Treaty of Paris (December 10, 1898) |
Philippine Insurrection |
First Philippine Republic
Revolutionary forces
Pulajanes |
1899 |
|
|
- |
William McKinley
Theodore Roosevelt |
July 4, 1902 |
Moro Rebellion |
Sultanate of Sulu
Moro |
May 24, 1900 |
|
|
- |
William McKinley
Theodore Roosevelt
William Taft |
1913 |
Boxer Rebellion |
Righteous Harmony Society
Qing Empire |
September 28, 1900 |
|
|
- |
William McKinley |
China Relief Expedition, 1900
Boxer Protocol, September 7, 1901 |
Occupations of Honduras |
Honduran revolutionaries |
March 23, 1903 |
|
|
- |
Theodore Roosevelt
William Taft
Woodrow Wilson
Warren Harding
Calvin Coolidge |
April 21, 1925 |
Occupation of Cuba |
Cuban revolt |
Platt Amendment 1906 |
|
|
- |
Theodore Roosevelt
William Taft
Woodrow Wilson
Warren Harding
Calvin Coolidge
Herbert Hoover
Franklin Roosevelt |
Treaty of Relations 1934 |
Occupation of Nicaragua |
Liberal rebels |
May, 1910 |
|
|
- |
William Taft
Woodrow Wilson
Warren Harding
Calvin Coolidge
Herbert Hoover
Franklin Roosevelt |
1933 |
Mexican Revolution |
Mexico
Yaqui |
Tampico Affair April 9, 1914 |
|
|
- |
Woodrow Wilson |
1918 |
Occupation of Haiti |
Haiti
Caco rebels |
July 28, 1915 |
|
|
- |
Woodrow Wilson
Warren Harding
Calvin Coolidge
Herbert Hoover
Franklin Roosevelt |
August 1, 1934 |
Occupation of the Dominican Republic |
Dominican Republic |
1916 |
|
|
- |
Woodrow Wilson
Warren Harding
Calvin Coolidge |
1924 |
World War I
|
Germany
Austria-Hungary |
April 6, 1917
December 7, 1917 |
82-6
74-0 |
373-50
365-1 |
- |
Woodrow Wilson |
Armistice with Germany November 11, 1918
Paris Peace Conference 1919
Treaty of Berlin (August 25, 1921)
Treaty of Trianon (in part) |
Russian Civil War |
Russia |
August 15, 1918 |
|
|
- |
Woodrow Wilson |
April 1, 1920 |
World War II
|
Japan
Germany
Italy
Bulgaria
Hungary
Romania |
December 8, 1941
December 11, 1941
December 11, 1941
June 5, 1942
June 5, 1942
June 5, 1942 |
82-0
88-0
90-0
73-0
73-0
73-0 |
388-1
393-0
399-0
360-0
357-0
361-0 |
- |
Franklin Roosevelt
Harry Truman |
V-J Day, Japanese Instrument of Surrender (September 2, 1945), Treaty of San Francisco (September 8, 1951)
V-E Day, Unconditional German Surrender, (May 8, 1945), Treaty on the Final Settlement with Respect to Germany (September 12, 1990), Treaty of Vienna with Austria (May 15, 1955)
Treaty of Peace with Italy, 1947
Paris Peace Treaty (February 10, 1947) |
Cold War
- Greek Civil War, 1947 - 1949
- First Indochina War, 1950 - 1954
- Korean War, 1950 - 1953
- Second Indochina War, 1953 - 1975
- First Taiwan Strait Crisis, 1954 - 1955
- Second Taiwan Strait Crisis, 1958
- Bay of Pigs, 1961
- Operation Power Pack, 1965 - 1966
- Second Korean War, 1966 - 1976
- Angolan Civil War, 1975 - 1976
- Soviet-Afghan War, 1979 - 1989
- Nicaraguan Civil War, 1981 - 1990
- Operation Urgent Fury, 1983
- Operation Just Cause, 1989 - 1990
|
Democratic Army of Greece
N.O.F. partisans
Soviet Union
Yugoslavia
Bulgaria
Albania
Viet Minh
Pathet Lao
Khmer Issarak
United Issarak Front
People's Republic of China
North Korea
North Vietnam
Viet Cong
Cuba
Khmer Rouge
MPLA
AAF
Mozambique
FSLN
Afghanistan
Grenada
Panama |
Battle Act
Tonkin Resolution
-
-
-
-
-
Operation IA Feature
-
-
-
-
. |
-
88-2
-
-
-
-
-
-
-
-
-
-
. |
-
416-0
-
-
-
-
-
-
-
-
-
-
. |
-
-
84
-
-
-
-
-
-
-
-
-
-
-
. |
Harry Truman
Dwight Eisenhower
John Kennedy
Lyndon Johnson
Richard Nixon
Gerald Ford
Jimmy Carter
Ronald Reagan
George Bush |
Hellenic Army victory
Partition of Vietnam, Geneva Summit (1955)
Armistice, Korean Demilitarized Zone 1953
Vietnamization, Paris Peace Accords 1973, Fall of Saigon 1975
Sino-American Mutual Defense Treaty December 2, 1954
Ceasefire
Rebels captured 1961
Ceasefire, Joaquín Balaguer elected
Hostilities cool
Clark Amendment, Ceasefire 1989
Soviet troop withdrawal from Afghanistan May 15, 1988 - February 15, 1989
Ceasefire, Violeta Chamorro elected 1990
Constitution restored
Manuel Noriega captured January 3, 1990
Dissolution of the USSR, Malta Summit December 3, 1989 |
Operation Blue Bat |
Lebanese Rebels |
1958 |
|
|
|
Dwight Eisenhower |
October 25, 1958 |
Multinational Force in Lebanon |
Shia militia
Druze miltia
Syria |
UN Security Council Resolution 425 March 19, 1978
S.J. Res. 159 September 29, 1983 |
54-46 |
253-156 |
425
426 |
Jimmy Carter
Ronald Reagan |
1984 |
First Gulf of Sidra Incident |
Libya |
1981 |
|
|
|
Ronald Reagan |
1981 |
Operation Prairie Fire |
Libya |
March, 1986 |
|
|
|
Ronald Reagan |
1986 |
Operation El Dorado Canyon |
Libya |
April 15, 1986 |
|
|
|
Ronald Reagan |
1986 |
Iran-Iraq War |
Iran |
1987 |
|
|
|
Ronald Reagan |
1989 |
Second Gulf of Sidra Incident |
Libya |
January 4, 1989 |
|
|
|
Ronald Reagan |
1989 |
Gulf War |
Iraq |
UN Security Council Resolution 678 November 29, 1990
H.R.J. Res. 77 January 12, 1991 |
52-47 |
250-183 |
678 |
George Bush |
UNSCR 689, 1991 |
Iraqi no-fly zones |
Iraq |
5 April 1991 |
|
|
688 |
George Bush
Bill Clinton |
Iraq sanctions,
|
Somali Civil War |
Various Somali factions |
1992 |
|
|
|
George Bush Bill Clinton |
1994 |
Bosnian War |
Croatia
Serbia |
1992 |
- |
- |
770
776
836 |
Bill Clinton |
Reflagged as IFOR in 1995
Reflagged as SFOR in 1996
Completed in 2004 |
Operation Uphold Democracy |
Haiti |
September 19, 1994 |
|
|
|
Bill Clinton |
March 31, 1995
Reinstatement of Jean-Bertrand Aristide as President of Haiti |
Kosovo War |
Federal Republic of Yugoslavia |
1999 |
|
|
|
Bill Clinton |
Military Technical Agreement 1999 |
Global War on Terrorism
- War in Afghanistan, October 7, 2001 - ongoing
- Operation Enduring Freedom – Philippines, January 15, 2002 - ongoing
- Operation Enduring Freedom – Horn of Africa, October 7, 2002 – ongoing
- Iraq War, March 20, 2003 – present
- Operation Enduring Freedom – Trans Sahara, February 6, 2007 - ongoing
|
Islamic Emirate of Afghanistan
Taliban
al-Qaeda
IMU
HI-Gulbuddin
HI-Khalis
Haqqani network
TTP
IEW
Quetta Shura
TNSM
Jemaah Islamiyah
Abu Sayyaf
Rajah Sulaiman Movement
Islamic Courts Union
Harakat al-Shabaab Mujahedeen
Hizbul Islam
Alliance for the Re-liberation of Somalia
Somali Pirates
Yemeni Pirates
Ba'athist Iraq
Baath Party Loyalists
Islamic Army of Iraq
Ansar al-Sunnah
Kurdistan Workers Party
al-Qaeda Organization in the Islamic Maghreb |
S.J. Res. 23 September 14, 2001
H.J. Res. 114 October 16, 2002 |
98-0
77-23 |
420-1
296-133 |
1368
1378 |
George W. Bush
Barrack Obama |
Ongoing |
Second Liberian Civil War |
Peacekeeping |
2003 |
- |
- |
1497 |
George W. Bush |
US Forces withdraw in 2003 after UNMIL is established |
2004 Haitian rebellion |
Peacekeeping |
2004 |
- |
- |
1529
1542 |
George W. Bush |
2004 |