The Arkansas River Valley is one of the most fertile regions in the South. During the Civil War, the river also served as a vital artery for moving troops and supplies. In 1863 the battle to wrest control of the valley was, in effect, a battle for the state itself. In spite of its importance, however, this campaign is often overshadowed by the siege of Vicksburg. Now Mark K. Christ offers the first detailed military assessment of parallel events in Arkansas, describing their consequences for both Union and Confederate powers.