Operation Drumbeat: Hitler declares war on America, and German Admiral Karl Donitz devises a surprise attack plan on the U.S. Atlantic Seaboard. The attack remains largely secreted away for over 60 years until now, when NOAA National Marine Sanctuaries uncover the story using advanced technology.
Hitler's Secret Attack on America
A surprise U-boat assault is planned by Karl Donitz, Commander of the German submarine fleet, in response to Hitler's declaration of war against America in December 1941, targeting the U.S. Atlantic Coast.
