As World War II recedes further into the past, still each year hundreds of new books are published about some aspect of this global conflict. Many offer new insights from recently declassified documents. Other's look to re-interpret what was thought to be well understood events. This book is no exception. The history of U-402, a Type VIIC German U-boat, is another tile in the mosaic of the war, and more specifically the Battle of the Atlantic. U-402's conning tower was emblazoned with the shield of its sponsoring German city of Karlsruhe. Upon that shield was the Latin word Fidelitas' -Fidelity -and Baron Siegfried Freiherr von Forstner, the U-boat's captain, embodied that word through his deep sense of loyalty to his profession, country, and crew. Born of an aristocratic military family, with a tradition of U-boat service, von Forstner served without the pretentiousness of title, even after winning the Ritterkreuz (Knight's Cross). He fought the war like a knight of old, with a defined code of chivalry, as he duelled with escorts, went to the aid of fellow U-boats, and rescued his enemy from the sea. As the North Atlantic battlefield grew deadlier with each successive patrol, von Forstner remained focused on his duty to sink Allied tonnage while keeping his crew alive. His daring and conduct at sea captured the respect of Captain, US Coast Guard (Ret) John M Waters, who was a Watch Officer onboard the escort USCGC _Ingham_ that fought U-402 in several convoy battles. After the war, he became the unexpected chronicler of his former enemy, and established an enduring friendship with von Forstner's family. The story of von Forstner and U-402 parallels the rise and fall of the Wolfpack, and reflects the ebb and flow of the Battle of the Atlantic from the early operations in European waters, to Operation _Paukenschlag_ (Drumbeat) off the US East Coast, to the climatic convoy battles of the North Atlantic in 1943\. This is a truly gripping account of the Atlantic conflict, and the large selection of photographs adds a realism and authenticity found in very few accounts of the U-boat war.

During the last year of World War II the once surface-bound diesel-electric U-boat ushered in the age of total undersea war' with the introduction of an air mast, or 'snorkel' as it became known among the men who served in D nitz's submarine fleet. U-boats no longer needed to surface to charge batteries or refresh air; they rarely communicated with their command, operating silently and alone among the shallow coastal waters of the United Kingdom and across to North America. At first, U-boats could remain submerged continuously for a few days, then a few weeks, and finally for months at a time, and they set underwater endurance records not broken for nearly a quarter of a century. The introduction of the snorkel was of paramount concern to the Allies, who strived to frustrate the impact of the device before war's end. Every subsequent wartime U-boat innovation was subordinated to the snorkel, including the new Type XXI Electro-boat wonder weapon'. The snorkel's introduction foreshadowed the nearly un-trackable weapon and instrument of intelligence that the submarine became in the postwar world. This exhaustive study, the first of its kind, draws upon wartime documents from archives around the world to re-evaluate the last year of the U-boat's deployment, all its key technological innovations, the evolving operations and tactics, and Allied countermeasures. It provides answers to many long-standing questions about the last year of the war: How and why did U-boats patrol so close inshore? How effective was acoustic and anti-radar camouflage? Why was U-boat wireless communication so problematic? How did U-boats navigate so effectively submerged? What were the health implications of staying submerged for a month or more? What does an accurate snorkel-configuration look like? This new study is destined to become the authoritative reference for all these issues and many more.