Norway, the Netherlands, Belgium, Bohemia-Moravia and, especially, France made significant involuntary contributions to the German war effort. Their mines, factories, farms and railways were directed to servicing German requirements and their populations were obliged to work at German war production: at first in their own countries, later on in Germany itself. In September 1944 there were 7,487,000 foreigners in Germany, most of them there against their will, and they constituted 21 percent of the country’s labour force.