WARFARE BENEATH THE WAVESThe longest continuous military campaign of World War II, the Battle of the Atlantic, is widely considered one of the most complex naval battles in history. Between 1939 and 1945, German U boats and warships, together with the Luftwaffe, fought against the Royal Navy, the Royal Canadian Navy, the United States Navy, and convoys of Allied merchant ships in a series of devastating battles. In Warfare Beneath the Waves, eminent naval historian Axel