The American Civil War was at a turning point in 1863 when Lt. Col. Arthur J. L. Fremantle of the British Coldstream Guards toured the Confederacy. Mildly predisposed toward the Union side because of his dislike of slavery, he was soon awakened to the gallantry of Jefferson Davis, Robert E. Lee and his generals, ordinary Johnny Rebs, and the women left at home. From April to early July 1863--the critical period of campaigns at Vicksburg, Chancellorsville,...