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.
Features
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Learn More about the Battle
Find out more about the people, places and events that are part of the campaign that changed America.
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Plan Your Visit
Click here if you plan to visit the park for some helpful hints.
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Social Media
Go to our Social Media sites to see the latest stories and images from the Battlefield.
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Did You Know?
Union General John Gibbon who served at Antietam and fought in the infamous Cornfield had three brothers who served in the Confederate army.