I would like information about an ancestor that was killed at the Battle of Chickamauga, named James Robert Sims (Simms). Four brothers in the 19th Infantry, Company I, Sou Carolina, all entered the war as enlisted men (e.g. privates). Only one was killed at Chickamauga. Other brothers names were: Samuel Seborn Sims, Thomas Benjamin Sims, and John Alexander Sims. Any info on these 3 brothers, but particularly James Robert Sims, would be greatly appreciated.