National Battlefield · MD
Antietam National Battlefield is open.
Last checked Wed, 14 Oct 2026 13:00:58 GMT
23,000 soldiers were killed, wounded or missing after twelve hours of savage combat on September 17, 1862.
A federal government shutdown is in effect. Access and staffing at National Park Service sites vary — some close and barricade entrances, some stay open but unstaffed. Live shutdown status →
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 Abraham Lincoln to issue the preliminary Emancipation Proclamation.
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We derive Antietam National Battlefield's status from the National Park Service's own alerts and operating hours, refreshed hourly — this is our reading, not an official determination. As of the last check: No active closures or hazards reported. Full method: how we check park status.