Many people drive along Branch Ave. at Antietam, but few people take the time to walk along this important section of the Confederate line. With the battle hanging in the balance, Confederate General A. P. Hill and his Light Division arrived in the nick of time to save Robert E. Lee's army. Dennis Frye and Tom Clemens of the Save Historic Antietam Foundation join American Battlefield Trust Chief Historian Garry Adelman, and historian Bryan Cheeseboro for an examination of this chapter of Antieta

2.3K views · 215 reactions | On September 20, 1862, Alexander Gardner arrived at the Antietam Battlefield to photograph the aftermath of the bloodiest day in American history. There, he took a shot of the troops of Pennsylvania Battery E, also known as Knap's Battery. Join Garry Adelman as we "step into" this historic photo. | American Battlefield Trust | Facebook