6 Season
36 Episode
Nazi Megastructures - Season 1 Episode 3 U-Boat Base
This episode describes the immense and impenetrable concrete and steel submarine pens that the Nazis built to protect their precious and deadly U-boats from Allied attacks.
- Year : 2019
- Country : United Kingdom, United States of America
- Genre : Documentary, War & Politics
- Studio : National Geographic Channel
- Keyword : nazi, military weapons
- Director :
- Cast : Richard Lintern
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