In this dramatic story, Lawrence Paterson draws on the original war diary entries of Germany's premier submarine unit, the 1st U-boat Flotilla, to describe events of the war at sea from 1939 to 1944. Compiled by the flotilla commander, the war diary was a formal record that included combat results. From laying mines along Britain's eastern seaboard to the desperate final battles, the roller-coaster fortunes of Karl Doenitz's "Grey Wolves" are recorded...