Gordon Williamson, "U-boats vs Destroyer Escorts: The Battle of the Atlantic (Duel)".
Publisher: Osprey Publishing | ISBN: 1846031338 | 2007 edition | PDF | 80 Pages | 31.94 MB
Winston Churchill claimed that the "U-boat peril" was the only thing that ever frightened him during World War II. A formidable foe, the U-boat was developed from a small coastal vessel into a state-of-the-art killer, successfully stalking the high seas picking off merchant convoy ships. It was not until the destroyer escort was introduced, alongside the development of destroyer groups with dedicated anti-submarine tactics, that there was an effective means of defence and attack against the U-boat peril.