E. Lee's battle plan.
Three days before this battle, Union and Confederate forces fought over the passes of South Mountain. While Union forces drove the Confederates out of the Miller cornfield, fighting also raged at sites later known as Bloody Lane and Burnside Bridge. The battle might not have happened had George McClellan not come across a copy of Robert. E. Lee's battle plan. For 10 points, name this September 17, 1862 battle, also known as Sharpsburg, the bloodiest battle of the Civil War.
Three days before this battle, Union and Confederate forces fought over the passes of South Mountain.
{Antietam} [accept {Sharpsburg} before it is read]