List of the lengths of United States participation in wars

Lengths of US combat forces' participation in wars

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

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

|- (19 years, 5 months)||

|- () ||

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|- () ||

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|- () ||

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|- (8 years, 9 months)||

|- (8 years, 5 months) ||

|- ||1835 – 1842 || {{round|{{#expr: /365}}|1}} years (6 years, 7 month) ||

|- (4 years, 1 month) ||

|-

|- (3 years, 8 months) ||

|- (3 years, 1 month) ||

|- (2 years, 6 months) ||

|- (1 year, 9 months) ||

|- (1 year, 9 months) ||

|- (1 year, 7 months) ||

|- (1 year, 7 months) ||

|- (1 year, 3 months) ||

|- (7.2 months) ||

|- (4.8 months) ||

|-

|-

|-

|-

|- ||

|- (2 hours 28 minutes)||

|- |}

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

Notes

References

Bibliography

: :

References

1. (August 30, 2021). "Last troops exit Afghanistan, ending America's longest war".
2. Rohn, Alan. (March 26, 2013). "When was the end of the Vietnam War?".
3. (1998-11-06). "Defense.gov News Release: NAME OF TECHNICAL SERGEANT RICHARD B. FITZGIBBON TO BE ADDED TO THE VIETNAM VETERANS MEMORIAL".
4. {{harvnb. U.S. Department of Defense. 1998
5. {{Harvnb. Lawrence. 2009
6. (June 4, 2022). "Biden approves deployment of hundreds of US troops to Somalia".
7. (June 4, 2022). "New Somali President Welcomes Return of US Troops".
8. (March 1, 2023). "US increases military support for Somalia against al-Shabab". Defense News.
9. "US special forces secretly deployed to assist Saudi Arabia in Yemen conflict". The Independent.
10. (May 3, 2024). "America has lost the war against Islamist terror in Africa".
11. (July 3, 2024). "After Failure in Niger, U.S. Africa Policy Needs a Reset".
12. (July 3, 2024). "The US War on Terror in West Africa Is a Continuing Disaster".
13. (July 3, 2024). "America's $280 Million Military Mission in Niger Ends in Failure".
14. (April 12, 2024). "Niger ends military agreement with US, calls it ‘profoundly unfair’". CNN.
15. (2011-05-03). "US military deaths in Iraq war at 4,452".
16. (2011-05-18). "Why can't we stop our wars?".
17. Wood, David. (April 27, 2011). "Robert Gates' Pentagon Legacy: Unfinished Wars, Unfinished Budget Reform".
18. "Obama May Face Tough Decision as Iraqi Leader Signals U.S. Troops Could Stay".
19. "Pentagon Rethinks Iraq pull-out Plans".
20. Terkel, Amanda. (May 11, 2011). "Iraq Withdrawal Date For U.S. Troops May Be Pushed Back Beyond 2011".
21. Robert L. Willett, "Russian Sideshow" (Washington, D.C., Brassey's Inc., 2003), page 267
22. "Our Longest U.S. War: Medical Treatments for Gulf War Illness Remain Elusive {{!}} Swords to Plowshares".
23. "A Kosovo Chronology {{!}} War In Europe {{!}} FRONTLINE".
24. Bill Bowden, [https://www.arkansasonline.com/news/2021/apr/18/files-link-arkansans-to-role-in-bay-of-pigs/ Files link Arkansans to role in Bay of Pigs: Kennedy, aides discuss it in 1963 tapes], ''Arkansas Democrat-Gazette'' (April 18, 2021).
25. (November 25, 2006). "U.S. Participation in Major Wars". Fox News.
26. (2006-11-25). "U.S. involved in Iraq war longer than it was in World War II".