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List of the lengths of United States participation in wars facts for kids

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This article contains the length and list of major conflicts, invasions and wars participated by the United States Armed Forces since its creation in 1775.

Lengths of U.S. combat forces' participation in wars

War in the context of this list is broadly construed to be a direct armed conflict between organized U.S. military forces and organized forces of (a) belligerent(s).

(Note: Ongoing wars are indicated in bold and with red bars.)

Rank War Dates Duration Duration (graphical representation)
1 War in Afghanistan 2001 – 2021 19.9 years
(19 years, 10 months)
2 Vietnam War 1955 – 1975 19.4 years
(19 years, 5 months)
3 Occupation of Haiti 1915 – 1934 19 years
4 Philippine–American War and Moro Rebellion 1899 – 1913 14 years
5 War in North-West Pakistan 2004 – 2017 13 years
6 Northwest Indian War 1785 – 1795 10 years
7 War on ISIS 2014 – present 9.9 years
(9 years, 10 months)
8 Iraq War 2003 – 2011 8.7 years
(8 years, 9 months)
9 American Revolutionary War 1775 – 1783 8.4 years
(8 years, 5 months)
10 Second Seminole War
 1835 – 1842 6.7 years
(6 years, 7 month)
11 First Barbary War 1801 – 1805 4.1 years
(4 years, 1 month)
12 American Civil War 1861 – 1865 4.0 years
13 World War II 1941 – 1945 3.7 years
(3 years, 8 months)
14 Korean War 1950 – 1953 3.1 years
(3 years, 1 month)
15 War of 1812 1812 – 1814 2.5 years
(2 years, 6 months)
16 Red Cloud's War 1866 – 1868 1.8 years
(1 year, 9 months)
17 Mexican–American War 1846 – 1848 1.8 years
(1 year, 9 months)
18 World War I 1917 – 1918 1.6 years
(1 year, 7 months)
19 Russian Civil War 1918 – 1920 1.6 years
(1 year, 7 months)
20 Great Sioux War of 1876 1876 – 1877 1.2 years
(1 year, 3 months)
21 Gulf War 1990 – 1991 0.6 years
(7.2 months)
22 Whiskey Rebellion 1794 – 1794 0.4 years
(4.8 months)
23 Spanish–American War 1898 – 1898 114 days
24 Kosovo War 1999 – 1999 79 days
25 Invasion of Panama 1989 – 1990 42 days
26 Invasion of Grenada 1983-10-25 – 1983-10-29 4 (3.5) days
27 Bay of Pigs Invasion 1961-04-19 1 day

Sources are found in the main articles of each war, as well as the Associated Press.

See also

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List of the lengths of United States participation in wars Facts for Kids. Kiddle Encyclopedia.