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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Memorial Illumination
The Memorial Illumination will be held on Saturday, December 1, 2012.
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Schedule of Events
Click on the link below to go to our calendar of events.
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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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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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Did You Know?
Henry Kyd Douglas, the youngest staff officer for Gen. Thomas "Stonewall" Jackson was a native of the Sharpsburg area. His family home was just 4 miles west of the Battlefield. His uniform and personal library are part of the Battlefield collection.