Daily Factoid

U-Boat Bases and Bunkers: U-Boat Bunker roofs were anywhere from three to seven meters thick, their outer walls were anywhere from two to seven meters thick, and their interior walls that separated each pen were anywhere from one to three meters thick.

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Charles McCain

Charles McCain is a Washington DC based freelance journalist and novelist. He is the author of "An Honorable German," a World War Two naval epic. You can read more of his work on his website: http://charlesmccain.com/

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