Frank G. Tinker, Jr. was the top American ace flying under contract with the Spanish Republican Air Force in the Spanish Civil War. A U.S. Naval Academy graduate, Class of 1933, he went into combat with Soviet airmen during the war. Through sheer perseverance, he rose from a teenage enlisted seaman, through the U.S. Naval Academy, to the officer’s wardroom—then pressed on to claim the wings of a naval aviator and to become a top-flight fighter pilot and a published author....