Description: After the Tullahoma Campaign, Rosecrans renewed his offensive, aiming to force the Rebels out of Chattanooga. The three corps comprising Rosecrans’s army split and set out for Chattanooga by separate routes. Hearing of the Union advance, Braxton Bragg concentrated troops around Chattanooga. While Col. John T. Wilder’s artillery fired on Chattanooga, Rosecrans attempted to take advantage of Bragg’s situation and ordered other troop...