Bratton rejoined his regiment in October 1862 and participated in the Battle of Fredericksburg in December. In the spring of 1863, his regiment missed the Battle of Chancellorsville because it accompanied Longstreet's Corps in the Siege of Suffolk, where Bratton served as temporary brigade commander. The regiment garrisoned Richmond, Virginia, while Robert E. Lee's army fought the Gettysburg Campaign during June and July. In the fall of 1863, Col. Bratton's 6th South Carolina accompanied Gen. Longstreet's corps to the Western Theater. He was present in several battles in the Tennessee area, including the Chattanooga Campaign and the Knoxville Campaign.