 He led Confederate defenses at the Battle of Fort McAllister (1863).General P. G. T. Beauregard in his official report to the war department, commended very highly the conduct of officers and men engaged in the successful defense of Fort McAllister in February 1863.Anderson and the 5th Georgia Cavalry were transferred to the Army of Tennessee under General William W. Allen as part of Kelly's Division, under General Joseph Wheeler before the opening of the Atlanta Campaign.