게티즈버그 전투는 언제 끝났는가?
The Confederate Army of Northern Virginia began its Retreat from Gettysburg on July 4, 1863. Following General Robert E. Lee's failure to defeat the Union Army at the Battle of Gettysburg (July 1–3, 1863), he ordered a retreat through Maryland and over the Potomac River to relative safety in Virginia. The Union Army of the Potomac, commanded by Maj. Gen. George G. Meade, was unable to maneuver quickly enough to launch a significant attack on the Confederates, who crossed the river on the night of July 13–14.
July 4, 1863