Commander Walker was doing quite nicely at the end of WWI, but budget cuts and the power of the Battle-line quite eclipsed the need for consistent development in anti-Submarine warfare. Walker had to give up the bright lights and toil in obscurity trying to keep HMS Osprey, the AS warfare school open. It wasn't easy. The Germans would never be able to launch another U-Boat war, everyone knew it. Johnny Walker knew that wasn't true, and had a good idea how close the Germans had come in the winter of 1917-18.
In 1939, the war started up again and Walker was sent to a staff post, but after Dunkirk, he was back in the Atlantic. Max Horton gave Walker a vital convoy back from Gibraltar, containing the first of the RN's CVEs. Walker lost about half the convoy, including the Escort Carrier...and produced a 200 page report as to why. Horton read it, and moved Walker to the command of the first Hunter-killer ASW group. Together, with Horton letting Walker innovate anything in the interests of the service, they killed a lot of U-Boats. Walker was a wonderful leader, but he worked himself to death by July 7th 1944. In spite of only three days notice, and the fact that Overlord was in progress, over one thousand people attended his funeral. He was one of the top three Royal Navy Heroes of WWII. The book is thin...but adequate. ( )

This a cracking good story and the best thing about it is it is true. Johnnie Walker was a naval officer in the Royal Navy who was not perceived as a good officer. He was fascinated by anti-submarine warfare and worked out during the inter war years a system of finding and attacking subs. Leading the famous Second Group of sub hunters in his favourite ship, the sloop, HMS Starling, he was personally involved in the sinking of 15 U-Boats. The Admiralty eventually recognized his methods worked and he received the appropriate awards. He died before the end of the War from a cerebral hemorrhage brought on by the stress of continuous service at sea. ( )