Timely Escape: Robert E. Lee’s Confederates cross the Potomac River back into Virginia only hours before a planned Union attack on July 14. (Private Collection/©Look and Learn/Elgar Collection/Bridgeman Images)
Timely Escape: Robert E. Lee’s Confederates cross the Potomac River back into Virginia only hours before a planned Union attack on July 14. (Private Collection/©Look and Learn/Elgar Collection/Bridgeman Images)