I am assured that our army is steadily, but I fear too slowly, moving upon Lee and the Rebels. There are, I hope, substantial reasons for this tardiness. Why cannot our army move as rapidly as the Rebels? The high water in the river has stopped them, yet our troops do not catch up. It has been the misfortune of our generals to linger, never to avail themselves of success, — to waste, or omit to gather, the fruits of victory. Only success at Gettysburg and Vicksburg will quiet the country for the present hesitancy. No light or explanation is furnished by the General-in-Chief or the War Department.
SOURCE: Gideon Welles, Diary of Gideon Welles, Secretary of the Navy Under Lincoln and Johnson, Vol. 1: 1861 – March 30, 1864, p. 367