...Government. Then he spiked the heavy guns that could not be taken away, burned another Potomac bridge a few miles above, and, on the 15th, marched up the Valley toward Winchester, and encamped near Charlestown . On that day Patterson, who had received intimations from the General-in-chief that he was expected to cross the Potomac after driving Johnston from the Ferry, was at Hagerstown, in Maryland, a few...