... morning, Longstreet's orders had been only to go as far as Cashtown, but later orders were sent for all troops to come to Gettysburg. It was now the fourth day since Meade had relieved Hooker. Harper's Ferry had been evacuated. Of its 11,000 troops, 7000 under French were brought to Frederick, and 4000 escorted to Washington the artillery and stores of the post. Meade knew that Ewell's corps was be...