Seminary Ridge was the site of Battle of Gettysburg fighting on July 1, 1863, as well as a Pitzer Woods engagement on July 2. Robert E. Lee established his headquarters on the ridge just north of the Chambersburg pike, and the ridge also served as the Confederate line of battle for July 2 & 3 attacks against Union Army positions on Cemetery Ridge. On July 3, 500 men in George Pickett's division were killed/wounded on Seminary Ridge (including 88 lost in one regiment of Kemper's Brigade) from the Federal artillery counterfire prior to Pickett's Charge. The last hospital patient of the seminary's Old Dorm left on September 16, 1863.