Length of U.S. participation in major wars

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. The longest to date is the War in Afghanistan (2001–2021), War in Afghanistan with about 20 years of duration.

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.)''

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

See also

*United States military deployments
*Foreign policy of the United States
*United States Department of Defense
*Declaration of war by the United States
*Military history of the United States
*Foreign interventions by the United States
*United States Armed Forces
*United States military casualties of war
*List of wars involving the United States
*List of conflicts by duration

Notes

References

Bibliography

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{{US history

Wars involving the United States, *Lengths of participation
United States military history timelines,
United States military-related lists, History events