US Military Deaths by War
More than 1.1 million Americans have died in wars spanning 250 years — from Lexington and Concord to the streets of Tehran. Each number represents a person who never came home. This page ranks every US conflict by American lives lost.
All Wars Ranked by US Deaths
Full Data Table
| # | Conflict | Years | Deaths | Wounded |
|---|---|---|---|---|
| 1 | World War II | 1941-1945 | 405,399 | 670,846 |
| 2 | Civil War (Union) | 1861-1865 | 364,511 | 281,881 |
| 3 | World War I | 1917-1918 | 116,516 | 204,002 |
| 4 | Vietnam War | 1955-1975 | 58,220 | 153,303 |
| 5 | Korean War | 1950-1953 | 36,574 | 103,284 |
| 6 | Revolutionary War | 1775-1783 | 25,000 | 25,000 |
| 7 | War of 1812 | 1812-1815 | 15,000 | 4,505 |
| 8 | Mexican-American War | 1846-1848 | 13,283 | 4,152 |
| 9 | Iraq War | 2003-2011 | 4,599 | 32,226 |
| 10 | Philippine-American War | 1899-1902 | 4,196 | 2,930 |
| 11 | Afghanistan War | 2001-2021 | 2,461 | 20,752 |
| 12 | Spanish-American War | 1898 | 2,446 | 1,662 |
| 13 | Quasi-War | 1798-1800 | 514 | 0 |
| 14 | Gulf War | 1990-1991 | 383 | 467 |
| 15 | Anti-ISIS | 2014-present | 93 | 200 |
| 16 | War on Terror (other) | 2001-present | 50 | 100 |
| 17 | Dominican Republic | 1965-1966 | 44 | 283 |
| 18 | Somalia | 1992-1994 | 43 | 153 |
| 19 | Barbary Wars | 1801-1805 | 35 | 64 |
| 20 | Panama | 1989-1990 | 23 | 325 |
| 21 | Grenada | 1983 | 19 | 116 |
| 22 | Iran 2026 | 2026-present | 13 | 45 |
| 23 | Bosnia | 1995-2004 | 12 | 0 |
| 24 | Somalia (AFRICOM) | 2007-present | 8 | 20 |
| 25 | Bay of Pigs | 1961 | 4 | 0 |
| 26 | Niger/Sahel | 2013-2024 | 4 | 2 |
| 27 | Kosovo | 1998-1999 | 2 | 0 |
| 28 | Yemen | 2015-2025 | 2 | 5 |
| Total | 1,049,454 | 1,506,323 | ||
The Pattern
The data reveals a striking pattern: the wars Americans remember and debate — Iraq, Afghanistan, Vietnam — are not the deadliest. The Civil War and World Wars dwarfed everything else in human cost. But there's a deeper lesson.
Since the end of the draft in 1973, war deaths have plummeted — not because wars stopped, but because the burden shifted to a tiny fraction of Americans. The all-volunteer force means 99% of Americans experience war as an abstraction. When war costs nothing personally, there's no political pressure to stop it.
This is why the forever wars are possible. If every American family had skin in the game, the 20-year Afghanistan War — and the current Iran conflict — would be politically unsustainable.
Frequently Asked Questions
How many US soldiers have died in all wars?
Approximately 1.1 million American service members have been killed in wars from the Revolutionary War through 2026. The Civil War was the deadliest (364,511 Union deaths), followed by World War II (405,399), World War I (116,516), Vietnam (58,220), and Korea (36,574).
Which war killed the most Americans?
World War II killed the most Americans in absolute terms with 405,399 deaths. However, the Civil War (364,511 Union deaths, plus an estimated 258,000 Confederate) killed more Americans total and had a far higher death rate relative to population — about 2% of the entire US population died.
How many Americans died in the War on Terror?
The War on Terror (2001-present) has killed approximately 7,074 US military personnel: 2,461 in Afghanistan, 4,599 in Iraq, and the rest in various global operations. An additional 30,000+ veterans have died by suicide since 2001.
What is the deadliest war per year of fighting?
World War II was the deadliest per year at roughly 101,000 US deaths per year (1941-1945). The Civil War was close behind at ~91,000 per year. World War I killed 58,000 per year of US involvement. By contrast, the 20-year Afghanistan War averaged 123 deaths per year.
Related Pages
Related Analysis
Sources
- • Department of Defense — Defense Casualty Analysis System (DCAS)
- • Congressional Research Service — “American War and Military Operations Casualties”
- • National Archives — Military Records
- • Brown University Costs of War Project
- • VA National Center for Veterans Analysis and Statistics