General George H. Thomas, the "Rock of Chickamauga" of the history books, was a Virginian who chose the northern side in the Civil War. While Thomas was considered a traitor by his family, his military superiors regarded him with a certain mistrust because of his southern background. Nonetheless, Thomas was prominent in the battles of Mill Springs, Shiloh, Corinth, Perryville, and Nashville, and was immortalized at Chickamauga, where he tenaciously...