"I Corps (Union Army)" . . . . "I Corps (Union Army)" . "1st" . "First Corps" . "I Corps (Army of the Potomac)" . . "50px" . . . "Union 1st Corps" . "III Corps" . . . "1864" . . "I Corps" . . . "Department of the Rappahannock" . . . . . . "Second Division, I Corps" . "I" . . . . . . . . . "force" . . . . "III Corps (Army of Virginia)" . "1862" . "Corps" . . "1st Corps" . "1862" . "1st Army Corps" .