...was these heights that the right of the Union army under Sumner was destined to assail. The left of the Union line composed of the Grand Division of Franklin was, as already stated, two miles below Fredericksburg . The plain here stretches to a width of two miles, and is scolloped by spurs of hills, less elevated than those in the rear of the town and clothed with dark pines and leafless oaks. This positio...