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.
Columbia, Pennsylvania
With the Union Army of the Potomac hastening northward into Maryland and Pennsylvania, Robert E. Lee ordered his widely scattered forces to withdraw to Heidlersburg and Cashtown (not far from Gettysburg) to rendezvous with other contingents of the Confederate Army. The burning of the Columbia-Wrightsville Bridge thwarted one of Lee's goals for the invasion of Pennsylvania, and General Gordon later claimed the skirmish at Wrightsville reinforced the erroneous Confederate belief that the only defensive forces on hand were inefficient local militia, an attitude that carried over to the first day of the Battle of Gettysburg.