"The general staff was of the opinion that a French attack in the west would have broken through, as our fortifications were not complete, nor were they in 1939, when the French could have broken through, although at heavier cost. The West Wall was completed only from Trier south to the Rhine in 1939. Northward it was incomplete and without any depth. After 1940 construction ceased. To a certain extent the West Wall was a bluff, like the Atlantic Wall. With regard to the latter it was impossible to fortify the entire coast and every military man must have concluded that a landing and a penetration of five kilometers would end all difficulties as far as fortifications were concerned."