Following a succession of failed efforts in the East, Union forces score a narrow victory in the Battle of Antietam (Sharpsburg, Maryland). Though the battle falls short of capturing Lee's army, its result boosts northern morale and provides President Lincoln with an opportunity to reframe the purpose of the war by means of the Emancipation Proclamation. For complete text plus animated maps, music, and more, visit www.ageofrevolution.net.