...nadvisable, and it was therefore determined to withdraw. The trains, with such of the wounded as could bear removal, were ordered to Williamsport on the 4th July, part moving through Cashtown and Greencastle , escorted by General Imboden, and the remainder by the Fairfield road. The army retained its position until dark, when it was put in motion for the Potomac by the last named route. A heavy rain c...