17 sept. 1862 - Battle of Antietam

Description:

Fought on September 17, 1862, between Confederate General Robert E. Lee's Army of Northern Virginia and Union General George B. McClellan's Army of the Potomac, near Sharpsburg, Maryland and Antietam Creek as part of the Maryland Campaign. It was the first field army–level engagement in the Eastern Theater of the American Civil War to take place on Union soil and at present remains the bloodiest day in American history, with a combined tally of 22,717 dead, wounded, or missing.