Secrets of World War II Episode 11: The Rise of Underwater Warfare & Tech Innovations 🌊

Secrets of World War II episode 11: The underwater war saw many innovations and a rapid increase in electronic technology, which eventually enabled the Allies to achieve ultimate victory. It was the only thing that truly frightened Winston Churchill. Silently patrolling the cold, gray waters of the Atlantic, the German U-boat almost sank Great Britain's chances for victory.