With dozens of historical documents and over 400 photographs, the author not only presents a comprehensive history of U-boat crews and the undersea war, but also shows how those with an interest in the U-boat war can find U-boat related artifacts and how they can trace many to specific boats ? and then research what those boats and crews accomplished. SELLING POINTS: ?Documentary accounts of specific U-boats and crews ?Details of operations and daily life ?Extremely rare award documents, photos, ephemera ILLUSTRATIONS 400 b/w images *