| 1. |  | Union Generals | United States History--Civil War, 1861-1865; Generals; Military leadership; Military officers | Beginning at the top and going clockwise: Maj. Gen. John C. Fremont; Maj. Gen. Irwin McCowell; Maj. Gen. Henry W. Halleck; Maj. Gen. Joseph Hooker; Brig. Gen. Robert Anderson; Maj. Gen. Don Carlor Buell;... |