A generic U.S. World War II tank (Photo credit: Wikipedia)
- Afghanistan—11 years, 5 months (so far)
- Vietnam War—10 years, 9 months
- Second Iraq War—8 years, 10 months
- Revolutionary War—8 years, 5 months
- Civil War—4 years, 6 months
- World War II—3 years, 9 months
- Korean War—3 years, 2 months
- War of 1812—2 years, 7 months
- Mexican War—2 years, 1 month
- First Iraq War—7 months
- Spanish-American War—4 months
Robert DeVries
Related articles
- Top 10 deadliest American wars (americanlivewire.com)
- The Last Time America Declared War (reason.com)
