Wheeler and his troopers guarded the army's left flank at Chickamauga in September 1863, and after the routed Union Army collected in Chattanooga, Gen. Bragg sent Wheeler's men into central Tennessee to destroy railroads and Federal supply lines in a major raid. On October 2 his raid at Anderson's Cross Roads (also known as Powell's Crossroads) destroyed more than 700 Union supply wagons, tightening the Confederates siege on Chattanooga. Pursued by his Union counterparts, Wheeler advanced to McMinnville and captured its 600-man garrison. There were more actions at Murfreesboro and Farmington, but by October 9 Wheeler had safely crossed the Tennessee River at Muscle Shoals, Alabama. The extensive raid and a subsequent northern movement to assist Longstreet in his siege of Knoxville, would cause the mounted arm of the army to miss the battles for Chattanooga (November 23–25). Wheeler covered Bragg's retreat from Chattanooga following the Union breakthrough at Missionary Ridge on November 25 and received a wound in his foot as his cavalry and Maj. Gen. Patrick Cleburne's infantry fought at the Battle of Ringgold Gap on November 27.