• Antietam was the single bloodiest day in American History. There were over 23,000 casualties after the 12 hour battle ended. Visit our Casualties page to learn more about this topic.

  • Artillery played a key role during the battle. Over 500 cannon fired more than 50,000 rounds during the one day fight.

  • Following the Union victory at Antietam, President Abraham Lincoln announced the Emancipation Proclamation. The North was now fighting a moral crusade.

  • The Maryland Campaign included battles at South Mountain, Harpers Ferry, Sharpsburg, and Shepherdstown. Here is a Timeline to those events.

  • Following the battle, many soldiers wrote their accounts of their role in the battle.

  • Alexander Gardner and his assistant James Gibson captured the first images of a civil war battlefield after the armies clashed. This was the first time people back home could see the carnage after the guns fell silent.

  • Learn about the Mumma Bible and its interesting travels following the Battle of Antietam.

  • The Signal Corps used flags to communicate messages across great distances during the Civil War.

  • Twenty soldiers were awarded the Medal of Honor for their actions during the Battle of Antietam.

  • As soldiers marched onto the field at Antietam, the battle flag carried at the center of the regiment was very important for many reasons.

Last updated: December 30, 2015

Contact the Park

Mailing Address:

P.O. Box 158
Sharpsburg, MD 21782


(301) 432-5124

Contact Us