"War Beneath the Sea" I do not have the author. I can get it if you need it. This book covers all U-boat/Submarines starting with WWI and through WWII. It is an excellent read with great insight on Donitz and his war diary. Tonnage War, etc. I highly recommend it. It also highlights all the authors noted above and the best parts of there books on the subject. It explains Berkley Park and decoding enigma. Problems with the convoy coverage and the air gap problem. What Donitz was facing. After reading this book I found that Donitz was a fairly decent guy and he did give a damn about his crews. It was pretty clear in his diary. It is 500 pages long and chock full of great stories and facts.
