U-Boat Bases and Bunkers 1941-45

This work takes a look at the formidable U-boat bases and bunkers built on the French coast in Norway and Germany, and also focuses on the huge Valentin factory... » 

This work takes a look at the formidable U-boat bases and bunkers built on the French coast in Norway and Germany, and also focuses on the huge Valentin factory complex at Bremen, which manufactured the new type XXI electro-boats. «