Virginia becomes the battleground after Antietam. As the Confederates retreat, Union forces miss an opportunity to follow and inflict a mortal blow. Lee is able to retreat and re-arm. McClellan, being given incorrect information as to the numbers of confederates under arms, takes too much time to re-equip. Due to this strategic blunder, he is relieved of command by President Lincoln in mid-campaign and replaced by General Burnside. The Battle of Fredericksburg will be his initiation, and the immense Union losses on the slopes of Marye's Heights his legacy.