The Union's Campaign for Chattanooga, Tennessee, and its resulting Battle of Chickamauga, is a valuable study of marked contrasts. On the one hand, brilliant strategic planning and operational maneuver, in concert with skillful deception, allowed the Union's Army of the Cumberland to advance virtually unchallenged into the vital Southern city of Chattanooga on 9 September 1863. Following this drive into the gateway of Georgia and the Confederacy, however, was the Union defeat on the tactic...