One effect of the German declurahowever, was to hasten the for of fifty over-age United States destroyers to Britain in return for naval and air bases on British possessions in the Western Hemisphere. These craft were badly needed by the British to fight the intensified German submarine and it attacks. is just possible that Hitler's blockade "move was influenced in some measure by the difficulties he has been encountering in his alr siege of Britain. That the German air force has suffered. I wot be questioned. So is numerical supremacy, it has sh been able to. drive British planes from the skies or to clear a way for a "bridgehead" which would enable German troops to be landed for a general invasion of the British Isles.
Hitler may foresee a long size one in which submarine and sur-
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