150 years ago today, despite still nursing their wounds from setbacks suffered during the Peninsula Campaign and the crushing defeat at 2nd Manassas, lead elements of the newly re-organized Army of the Potomac, under the command of Gen. George B. McClellan, began to move out from the protection of Washington’s strong fortifications, in pursuit of Lee and the Army of Northern Virginia. By Sept. 7, McClellan would officially move his headquarters out of Washington to Rockville, MD.
to learn more about Washington’s Civil War forts, click here

Welcome to the official site for the Antietam Battlefield Guide Association. The Antietam Guides are a group of historians dedicated to providing outstanding interpretive tours of the Antietam Battlefield, as well as other sites related to the Maryland Campaign of 1862. The Antietam Guides are booked through the Antietam National Battlefield Museum Store. This site offers a listing of our battlefield guides, as well as updates about our programs, what our guides are up to, and information about Antietam National Battlefield. We hope to see you at the park soon!