Watch Secrets of Nazi U-Boat Bases

Secrets of Nazi U-Boat Bases offers a new look at the Battle of the Atlantic; the most important military campaign of World War II. While occupying France, Hitler built along the French Atlantic Coast what he thought was the secret to securing victory - five huge underwater bases that protected and rearmed his returning U-Boat fleet after attacking British supply ships.

Secrets of Nazi U-Boat Bases is a 2019 documentary with a runtime of 53 minutes.