Battle of Antietam By Kassidy.Taryn Sutter Period: Sep 17, 1862 to Sep 17, 1862 Battle of Antietam One day battle, the bloodiest day in american history. Lincoln then issued his Preliminary Emancipation Proclamation on September 22, 1862. https://www.history.com/topics/american-civil-war/battle-of-antietam
