February, 1941 : German submarines were squeezing the vital maritime lifelines that allow Great Britain to stay in the war. In France, Otto Kretschmer, the top German submarine ace, was on leave but is suddenly recalled on duty by Admiral Dönitz, Commander of the German submarine arm, and given command of the prototype of a new class of diesel submarine, the U-800. Adding his tactical genius as a submarine commander to the fantastic capabilities of the U-800, Otto Kretschmer soon returns to...
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