The Battle of Gettysburg (ˈɡɛtᵻsbɜːrɡ) was a major battle in the American Civil War fought by Union and Confederate forces between July 1 and July 3, 1863, in and around Gettysburg, Pennsylvania.
In the Battle of Gettysburg, Union Major General George Meade's Army of the Potomac defeated attacks by Confederate General Robert E. Lee's Army of Northern Virginia, halting Lee's invasion of the North and forcing his retreat. The battle involved the largest number of casualties of the entire war and is often described as the war's turning point, due to the Union's decisive victory and its almost simultaneous concurrence with the victorious conclusion of the Siege of Vicksburg.
After his success at Chancellorsville in Virginia in May 1863, Lee led his army through the Shenandoah Valley to begin his second invasion of the North—the Gettysburg Campaign. With his army in high spirits, Lee intended to shift the focus of the summer campaign from war-ravaged northern Virginia and hoped to inf