The charge that ""the military mind lags behind military realities"" is basic to the thinking behind this vitally important book in which- against the history and adventure of ""The Tenth Fleet""-Farago concludes that while our submarine offensive arm is powerful and foresighted, our defensive preparations are woefully inadequate, and both Admiral Burke and his successor, Admiral Anderson, consider the problem insoluble. While the purpose behind the book and the conclusions reached will be unpalatable, the background of that shadowy defensive arm of World War II makes exciting reading in a recapitulation of one area of the war that has not had its historian. ""The Tenth Fleet"" was the brainchild of Rear Admiral Ernest King; its brilliant execution should surely be credited to Admiral F.S. Low and his dedicated staff. In a fusion of brain and brawn the most successful antisubmarine operation of the war -- in conjunction with its British counterparts- won an astonishing victory over the German wolf packs. The story of what happened is full of adventure --imagination -- and men who brought about the victory. It holds a beacon for today which should not be ignored. Farago was close to the procedure and has done a fine job here.