As a young man in Georgia, G. Moxley Sorrel enlisted in a cavalry unit even before the Civil War erupted, so eager was he to serve his home state. During the war, as an aide-de-camp on Brigadier General James Longstreet's staff he fought in many battles, including those at Chickamauga and Chattanooga. He was at Longstreet's side when Longstreet was struck down in 1864. Sorrel's "rough jottings from memory" provide vivid and detailed descriptions of...