Most lethal American battles Battles Battles

| Battle_Siege_or_Offensive | Conflict | Dates | Estimated_number_of_Americans_killed_ |
|---|---|---|---|
| Battle of the Kasserine Pass | World War II | February 19 to February 25, 1943 | Over 1,000 killed |
| Battle of Taejon | Korean War | July 14 to July 21, 1950 | 922 killed |
| Battle of Khe Sanh | Vietnam War | 21 January to 8 April 1968 | 737 killed |