The German Experience in Submarine Warfare
Declaration of War Against the United States
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| UNTERSEEBOOT: The German Experience in Submarine Warfare |
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| Type VIIB, 1940 | ||||||||||||||||
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| Type VIIC, 1944 | ||||||||||||||||
| "In the spring our u-boat war will begin at sea." | ||||||||||||||||
| --Adolf Hitler Declaration of War Against the United States |
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