sentences:  Nonetheless, Louisville was occupied by Union troops for almost the entire war, and resentment seethed.Both Prentice's sons joined the Confederate army, and the elder, William, died September 21, 1862 (shortly after the Battle of Antietam and as Union troops massed in Louisville to attack General Braxton Bragg's forces).His son Clarence rose to the rank of Major in Dortch's 2nd battalion, Kentucky Cavalry.