...ncellorsville, and then southward to Piney Branch church, and Burnside was to withdraw from Hill's front, and, marching to the eastward of Chancellorsville, then turn south, thus covering the road to Fredericksburg , in his rear, along which Grant was sending his wounded to Aquia creek, and by which he had communication with his base of supplies, which he had now shifted to the same point on the Potomac. The...