...ter, Gen. Banks ordered a halt to reform any disordered regiments. It was done, and the corps moved on, the enemy harassing in vain. Martinsburgh was reached, and Williamsport--thirteen miles on. The Potomac was then reached in the evening. A battle had been fought and thirty-five miles marched that day. The train crossed and was in safety. Towards evening the troops passed over, except that the Seco...