Battle, Siege, or Offensive |
Conflict |
Dates |
Estimated number of Americans killed |
Meuse-Argonne Offensive |
World War I |
September 26 to November 11, 1918 |
26,277 killed |
Battle of the Bulge |
World War II |
December 16, 1944 to January 25, 1945 |
19,276 killed |
Battle of Normandy |
World War II |
June 6 to July 24, 1944 |
16,293 killed |
Battle of Okinawa |
World War II |
April 1 to June 21, 1945 |
12,513 killed |
Battle of Hürtgen Forest |
World War II |
September 19, 1944 to February 10, 1945 |
Over 12,000 killed |
Battle of Gettysburg |
American Civil War |
July 1 to July 3, 1863 |
7,863 killed (3,155 Union and 4,708 Confederacy) |
Battle of Guadalcanal |
World War II |
August 7, 1942 to February 9, 1943 |
7,100 killed |
Battle of Iwo Jima |
World War II |
February 16 to March 26, 1945 |
7,000 killed |
Battle of Anzio |
World War II |
January 22 to June 5, 1944 |
5,538 killed |
Battle of Pusan Perimeter |
Korean War |
August to September, 1950 |
4,599 killed |
Battle of Spotsylvania |
American Civil War |
May 8 to May 21, 1864 |
4,192 killed (2,725 Union and 1,467 Confederacy) |
Battle of Chickamauga |
American Civil War |
September 19 to September 20, 1863 |
3,969 killed (1,657 Union and 2,312 Confederacy) |
Battle of the Wilderness |
American Civil War |
May 5 to May 7, 1864 |
3,741 killed (2,246 Union and 1,495 Confederacy) |
Battle of Antietam |
American Civil War |
September 17, 1862 |
3,654 killed (2,108 Union and 1,546 Confederacy) |
Battle of Shiloh |
American Civil War |
April 6 to April 7, 1862 |
3,482 killed (1,754 Union and 1,728 Confederacy) |
Battle of Chancellorsville |
American Civil War |
April 30 to May 6, 1863 |
3,271 killed (1,606 Union and 1,665 Confederacy) |
Battle of Saipan |
World War II |
June 15 to July 9 1944 |
2,949 killed |
Battle of Sicily |
World War II |
July 9 to August 17, 1943 |
2,572 killed |
Pearl Harbor Attack |
World War II |
December 7, 1941 |
2,500 killed |
Battle of Salerno |
World War II |
September 3 – September 16, 1943 |
2,000 killed |
Battle of Belleau Wood |
World War I |
June 1 to June 26, 1918 |
1,811 killed |
Battle of Peleliu |
World War II |
September 15 to November 27, 1944 |
1,794 killed |
Second Battle of Guam |
World War II |
July 21 to August 8, 1944 |
1,747 killed, |
Battle of Tarawa |
World War II |
November 20 to November 23, 1943 |
1,677 killed |
D-day (first day of Operation Overlord) |
World War II |
June 6, 1944 |
1,465 killed |
Battle of Chosin Reservoir |
Korean War |
November 27 to December 13, 1950 |
1,029 killed |
Battle for Manila |
World War II |
February 3 to March 3, 1945 |
1,010 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 |