The
attack on the Soviet Union on June 22nd 1941 and the
unexpectedly strong resistance put up by the Red Army forced the German
High Command to transfer increasing numbers of troops away from the
Western front, considerably weakening it in the process. When the United
States entered the war in December 1941, fears of an Anglo-American
landing intensified, and in the same month, Hitler reinforced his system
of defence by ordering the construction of the Atlantic Wall. This
gigantic project, entrusted to the Todt Organization, was begun in 1942
but had still not been completed by 1944, despite the efforts of
Field-Marshal Rommel, who had been made responsible for the entire
sector between the Netherlands and the Loire at the end of 1943.
The project involved building
15,000
structures along the entire coast of the North Sea, the English Channel
and the Atlantic. This required the labour of 450,000 workers (both
voluntary and impressed) and the use of 11 million tonnes of concrete
and 1 million tonnes of steel for the reinforcing rods.