MOST LETHAL AMERICAN BATTLES

The following is a list of the 'most lethal battles fought by the military of the United States of America'. This list shows the number of Americans killed during the battle.

Battle, Siege, or Offensive	Conflict	Dates	Estimated number of Americans killed
Meuse-Argonne Offensive	World War I	September 26, 1918 to November 11, 1918	26,277 killed
Battle of Okinawa	World War II	April 1, 1945 to June 21, 1945	18,900+ killed
Battle of the Bulge	World War II	December 16, 1944 to January 25, 1945	19,276 killed
Battle of Iwo Jima	World War II	February 16, 1945 to March 26, 1945	7,000 killed
Battle of Gettysburg	American Civil War	July 1, 1863 to July 3, 1863	6,655 killed (3,155 Union and 3,500 Confederacy)
Battle of Antietam	American Civil War	September 17, 1862	4,808 killed (2,108 Union and 2,700 Confederacy)
D-day (first day of Operation Overlord)	World War II	June 6, 1944	1,465 killed
Battle for Manila	World War II	February 3, 1945 to March 3, 1945	1,010 killed
Pearl Harbor Attack	World War II	December 7, 1941	2500+ killed