John A. Logan, called Black Jack by the men he led in Civil War battles from the Henry-Donelson campaign to Vicksburg, Chattanooga, and on to Atlanta, was one of the Union Army's most colorful generals. James Pickett Jones places Logan in his southern Illinois surroundings as he examines the role of the political soldier in the Civil War. When Logan altered his stance on national issues, so did the southern part of the state. Although secession,...