The post-war narrative of the German U-boat efforts follows several stages: the first “Happy Time,” followed by the second “Happy Time,” and then utter destruction by the Allies. In reality, the ...

To this day, there has only been one recorded instance of submarine-on-submarine warfare during WWII. The German Navy's destroyed U-864 is toxic to this day.

As World War II drew to a close, U.S. Navy intelligence suspected German U-boats equipped to launch V-1 rockets were preparing to hit New York City. The War Department dismissed the threat. The Navy ...