

The second-highest single-day toll was the Battle of Antietam with 2,108 dead. The bloodiest single day in the history of the United States military was June 6, 1944, with 2,500 soldiers killed during the Invasion of Normandy on D-Day. The campaign that resulted in the most US military deaths was the Battle of Normandy (June 6 to August 25, 1944) in which 29,204 soldiers were killed fighting against Nazi Germany. The battles and campaigns that reached that number of deaths in the field are so far limited to the American Civil War, World War I, World War II, Korean War, and one campaign during the Vietnam War (the Tet Offensive from January 30 to September 23, 1968). This article lists battles and campaigns in which the number of U.S. This article contains a list of battles with most United States military fatalities, in terms of American deaths.

Section 32 of the cemetery is in the foreground. Arlington House in Arlington National Cemetery.
