The Knight's Cross (Ritterkreuz) was one of the highest decorations given for extreme acts of valor to all ranks of the German armed forces during World War II. Few awards captured quite the respect and admiration of the German public as the Knight's Cross—it was the greatest honor one could achieve. In all, there were 123 recipients in the U-boat arm, including its commander-in-chief Karl Dönitz. Jeremy Dixon's highly illustrated book is the ideal guide to all these men and their wartime service. Full details are given of their tours of duty, the operations they took part in, how they won their award, how many ships they sank and their subsequent careers.