After the victory in the West over France in 1940 and the preemptive strike in 1941 against Stalin's aggressive Red Army, the bulk of the German Wehrmacht found itself in a fierce struggle in the vastness of Russia. To counter the threat of an Allied invasion in the West, the Organisation Todt began constructing a massive fortress along the coast, from the Spanish border to the shores of Norway. Over the years, deep-layered defensive positions were established to protect the Reich, including enormous bunkers for covering long-range and heavy artillery, radar installations for detecting enemy bomber streams, U-boat bunkers, flak positions, and much more. This sensational book features never-before-published contemporary color photographs in razor-sharp quality of structures in France, Belgium, Holland, Denmark, and Norway, documenting not only all the details of these defensive installations.