This new book from Ian Baxter delves into an important topic surrounding WWII. The focus is U-boats (untersee-boot, or "undersea boat") and their campaign against Allied shipping during the course of WWII. Germany constructed an impressive 1171 U-boats in the war years. Such was the significance of this deadly battle for the seas that the Allies lost more than 50,000 seamen and 15 million tons of shipping from 1939-45. Indeed, particularly early on...