Stephen R. Taaffe is professor of history at Stephen F. Austin State University in Nacogdoches, Texas. He is author of "Commanding Lincoln s Navy: Union Naval Leadership During the Civil War"; "Commanding the Army of the Potomac; The Philadelphia Campaign, 1777-1778"; and "MacArthur s Jungle War: The 1944 New Guinea Campaign"; and is a two-time winner of the Army Historical Foundation's Distinguished Book Award.