Overview
Antietam National Battlefield preserves the site of the Civil War battle fought on September 17, 1862, the bloodiest single day in American history.
History
The battle ended the Confederacy's first invasion of the North and led President Lincoln to issue the Emancipation Proclamation.
Today
Visitors tour the battlefield by car, bike or on foot.
Compiled October 2026. History is summarized for general interest; check primary sources for research. This landmark is local context, not an employer or job listing.