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.

Special lectures and commemoration program

National Cemetery 150th Anniversary

This year we commemorate the 150th Anniversary of the Antietam National Cemetery with a variety of special programs.

Lodge building at the National Cemetery

Plan Your Visit

Check out this section for answers to all your questions if you are planning a visit to Antietam National Battlefield.

NY State Monument with Cannon at Sunset

Learn About the Battle

Here you will find more information on the history of the Battle of Antietam as well as links to our Cultural and Natural Resources.

2017 Battle Anniversary Schedule

2017 Battle Anniversary Schedule

Full schedule of events for both Saturday, September 16 and Sunday, September 17.

Cannon on the Battlefield

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Last updated: August 23, 2017

Contact the Park

Mailing Address:

P.O. Box 158
Sharpsburg, MD 21782


(301) 432-5124

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