List of the lengths of United States participation in wars

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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

Summarize
Perspective

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.)

More information Rank, War ...
Rank War Dates Duration Duration (graphical representation)
1War in Afghanistan2001 – 2021[1]19.9 years
(19 years, 10 months)
2Vietnam War1955 – 1975[2][3][4][5][a]19.4 years
(19 years, 5 months)
3Occupation of Haiti1915 – 193419 years
4Second US Intervention in the Somali Civil War2007 present[6][7][8]18.1 years
(18 years, 1 month)
5US intervention in Yemen2002, 2009 present [9]15.2 years
(15 years, 1 month)
6Philippine–American War and Moro Rebellion1899 – 191314 years
7War in North-West Pakistan2004 – 201713 years
7US military intervention in Niger2013 – 2024 [10][11][12][13][14]11 years
8Operation Inherent Resolve2014 present10.7 years
(10 years, 8 months)
9Northwest Indian War1785 – 179510 years
10Iraq War2003 – 2011[15][16][17][18][19][20]8.7 years
(8 years, 9 months)
11American Revolutionary War1775 – 17838.4 years
(8 years, 5 months)
12Second Seminole War
1835 – 18426.7 years
(6 years, 7 month)
13First Barbary War1801 – 18054.1 years
(4 years, 1 month)
14American Civil War1861 – 18654.1 years
15World War II1941 – 19453.7 years
(3 years, 8 months)
16Korean War1950 – 19533.1 years
(3 years, 1 month)
17War of 18121812 – 18142.5 years
(2 years, 6 months)
18Red Cloud's War1866 – 18681.8 years
(1 year, 9 months)
19Mexican–American War1846 – 18481.8 years
(1 year, 9 months)
20World War I1917 – 19181.6 years
(1 year, 7 months)
21Russian Civil War1918 – 1920[21]1.6 years
(1 year, 7 months)
22Great Sioux War of 18761876 – 18771.2 years
(1 year, 3 months)
23Gulf War1990 – 1991[22][b]0.6 years
(7.2 months)
24Whiskey Rebellion1794 – 17940.4 years
(4.8 months)
25Spanish–American War1898 – 1898114 days
26Kosovo War1999 – 1999[23]79 days
27Invasion of Panama1989 – 199042 days
28Invasion of Grenada1983-10-25 – 1983-10-294 (3.5) days
29Bay of Pigs Invasion1961-04-191 day[c]
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Sources are found in the main articles of each war, as well as the Associated Press.[26][27]

See also

Notes

  1. Direct U.S. involvement ended in 1973 with the Paris Peace Accords
  2. (33)The term "Persian Gulf War" means the period beginning on August 2, 1990, and ending on the date thereafter prescribed by Presidential proclamation or by law. 38 U.S.C. § 101
  3. The Bay of Pigs invasion was conducted by Brigade 2506, a group of Cuban exiles recruited and equipped by the CIA as part of a covert operation, and trained by instructors from the CIA and U.S. Army Special Forces, U.S. Air Force, and Air National Guard.[24] The botched invasion took three days: Americans were initially not authorized to participate in the invasion. However, on the last day of the failed operation (April 19, 1961), U.S. air support was authorized, and eight Alabama Air National Guard members flew into Cuban airspace.[25]

References

Bibliography

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