Everything Everywhere Daily · Thursday, August 13, 2026
The Battle of Antietam, fought on September 17th, 1862, resulted in 22,726 casualties in just 12 hours, making it the single bloodiest day in American history. Despite ending in a draw, the Union's defense against the Confederate invasion under Robert E. Lee was considered a strategic victory.
“September 17th, 1862, was the bloodiest day in the history of the United States.”
“In just 12 hours, 22,726 people were killed, wounded, or went missing, just outside of Sharpsburg, Maryland, in one of the largest battles of the U.S. Civil War.”
“The prize: nearly 23,000 casualties in just 12 hours of combat, making September 17th, 1862, the single bloodiest day in American history.”