• Cannon and Cornfield at Dawn

    Antietam

    National Battlefield Maryland

The Bloodiest One Day Battle in American History

23,000 soldiers were killed, wounded or missing after twelve hours of savage combat on September 17, 1862. The Battle of Antietam ended the Confederate Army of Northern Virginia's first invasion into the North and led to Abraham Lincoln's issuance of the preliminary Emancipation Proclamation.

Did You Know?

park map

60% of Antietam National Battlefield property has been purchased since 1990. The park has more than doubled in size over the last 16 years.