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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150th Battle Anniversary
Antietam National Battlefield will observe the 150th Anniversary of the battle September 14-22, 2012.
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Schedule of Events
Click on the link below to go to our calendar of events.
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The Lost Orders Return
In commemoration of the 150th anniversary of the 1862 Maryland Campaign, Special Orders 191 (the "Lost Orders") returns to Monocacy for display.
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Support Your Antietam
Help preserve your Battlefield. Plant a tree, become a Partner, donate to preserve a cannon or monument, just a few examples of how you can help
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Memorial Illumination
The Memorial Illumination will be held on Saturday, December 1, 2012.
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Did You Know?
Robert Gould Shaw served as a Captain in the 2nd Massachusetts Infantry and was wounded in the Cornfield at Antietam before taking command of the 54th Massachusetts Infantry made famous in the movie Glory.