An exceptional figure in the history of the German Navy, Wolfgang Luth was one of only seven men in the Wehrmacht to win Germany's highest combat decoration, the Knight's Cross with Oak Leaves, Swords, and Diamonds. At one time or another he operated in almost every theater of the undersea war, from Norway to the Indian Ocean, and became the second most successful German U-boat ace in World War II, sinking more than 220,000 tons of merchant shipping. A master in the art of military...