Battle of Gettysburg
The Battle of Gettysburg () was fought July 1–3, 1863, in and around the town of Gettysburg, Pennsylvania, by Union and Confederate forces during the American Civil War. The battle involved the largest number of casualties of the entire war and is often described as the war's turning point. Union Maj. Gen. George Meade's Army of the Potomac defeated attacks by Confederate Gen. Robert E. Lee's Army of Northern Virginia, halting Lee's invasion of the North.
Pennsylvania in the American Civil War
Pennsylvania was the site of the bloodiest battle of the war, the Battle of Gettysburg, 
which became widely known as the one of the turning points of the Civil War. Numerous smaller engagements and skirmishes were also fought in Pennsylvania during the 1863 Gettysburg Campaign, as well as the following year during a Confederate cavalry raid that culminated in the burning of much of Chambersburg, Pennsylvania. The industrial town of York, Pennsylvania, was the largest city in the North to be occupied by the Confederate States Army during the war.