National Park Service · Maryland
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.
Reservations for Antietam National Battlefield are made through Recreation.gov. In peak season, the most popular campgrounds are typically claimed within minutes of each release — which is why the park reads as "sold out" for most of the year.
Sold out is not final, though. People book far ahead and plans change, so cancellations return to the official calendar throughout the season — with no announcement, at any hour. A cancelled site is bookable by whoever sees it first.
| Managed by | National Park Service |
|---|---|
| Book through | Recreation.gov |
| Location | Sharpsburg, MD |
| Campgrounds | 1 |
| Official listing | Recreation.gov |
Set a watch on the whole park, or go straight to the campground you want — each one has its own availability and cancellation pattern:
| Rohrbach Group Campground | 10 sites |
|---|
We scan the official Recreation.gov calendar for Antietam National Battlefield around the clock. The second a site that matches your dates and equipment opens up, you get a text with a direct link to that exact site. You book it yourself, in your own account, at the normal price. We never book, hold, or resell anything — monitoring is all we do, and it's what your fee pays for. Openings are first-come, so a text beats an email every time.
Page data refreshed 2026-10-29. Availability facts come from the official directory listing for Antietam National Battlefield; cancellation statistics come from our own scanning logs.