On June 29, when Lee learned that the Army of the Potomac had crossed the Potomac River, he ordered a concentration of his forces around Cashtown, located at the eastern base of South Mountain and west of Gettysburg. On June 30, while part of Hill's Corps was in Cashtown, one of Hill's brigades, North Carolinians under Brig. Gen. J. Johnston Pettigrew, ventured toward Gettysburg. In his memoirs, Maj. Gen. Henry Heth, Pettigrew's division commander, claimed that he sent Pettigrew to search for supplies in town—especially shoes.