Known as the bloodiest single-day battle in American History, the Battle of Antietam took place at Antietam creek in Maryland. Strategic plan unveiled and outnumbered, things didn’t start off smoothly for General Robert E. Lee and the Confederate army; yet, even with a copy of the enemy’s plan and a two-to-one advantage, did things work out for Union! With one side disadvantaged and the other wasting their advantages, the battle stayed undecided for hours- that is until violent attacks to General Lee’s troop had the Confederate army retreating. Although, the Battle of Antietam does not have a clear victorious side, the Union declared it as a victory and used the victory to justify the “Emancipation Proclamation”