The Maryland town devastated by the bloodiest day of the Civil War—the Battle of Antietam—is now home to its ghostly victims.In September 1862, fighting from the Battle of Antietam spilled into Sharpsburg's streets. Residents were left to bury the dead from both sides. Today, locals report lingering echoes of that strife, from the faint taps of a Union drummer boy named Charley King to the phantom footsteps of Confederate soldiers charging up the stairs of the Rohr...