Hell Below (2016)

S1E5 Hitler's Revenge

A mere month following the Japanese assault on Pearl Harbor, a new adversary struck at America, this time from the depths of the ocean. This narrative unfolds the details of Operation Drumbeat, orchestrated by German Admiral Karl Donitz, aimed at deploying U-boats along the U.S. coastline to target Allied merchant vessels from Newfoundland down to North Carolina. Utilizing historical war footage and insights from military experts, we uncover how the Nazis relentlessly attacked our shores and the reasons behind the U.S. Navy's struggle to counter their efforts.