Opening scenes from the 1989 movie "Glory". The first two minutes are the slow build-up. The events are also known as the "Battle of Sharpsburg (particularly in the South), fought on September 17, 1862, near Sharpsburg, Maryland, and Antietam Creek, as part of the Maryland Campaign. It was the first major battle in the American Civil War to take place on Northern soil. It was the bloodiest single-day battle in American history, with about 23,000 casualties."