Peter Andrews’s excellent article about George H. Thomas ("The Rock of Chickamauga,” March) is most informative. I was confused, however, by his statement that Thomas had been rewarded with the three stars of major general. The grade of major general was and is designated by two stars. Thomas was appointed major general of volunteers in April 1862. Two and a half years later he was appointed to the same grade in the regular Army. This would be his permanent rank.