The last troops of the Confederate Army of Northern Virginia cross the Potomac River into Maryland, while the first troops of the Federal Army of the Potomac begin crossing as well.
Exploring the most important 55 months in American history
The last troops of the Confederate Army of Northern Virginia cross the Potomac River into Maryland, while the first troops of the Federal Army of the Potomac begin crossing as well.
Citizens panic as Confederates start entering Pennsylvania. Robert E. Lee issues stern orders against looting civilian property, Joseph Hooker develops a secret strategy for dealing with the Confederate invasion, and the Confederate cavalry prepares to ride around the Federal army.
George B. McClellan’s Federal Army of the Potomac crosses from Maryland to Virginia, nearly 40 days after the Battle of Antietam.
Robert E. Lee’s Confederates withdraw from Maryland as George B. McClellan proclaims a complete Federal victory in the Maryland campaign.
Robert E. Lee’s Confederates make a final stand against George B. McClellan’s Federal army before Lee decides to withdraw from Maryland and return to Virginia.
The bloodiest day in American history takes place as the armies of Robert E. Lee and George B. McClellan fight to a standoff near Sharpsburg, Maryland, along Antietam Creek.