About 8.5 million Germans, or 10% of the population, had been members of the Nazi Party. Nazi-related organizations also had huge memberships, such as the German Labor Front (25 million), the National Socialist People's Welfare organization (17 million), the League of German Women, Hitler Youth, the Doctors' League, and others. It was through the Party and these organizations that the Nazi state was run, involving as many as 45 million Germans in total. In addition, Nazism found significant support among industrialists, who produced weapons or used slave labor, and large landowners, especially the Junkers in Prussia. Denazification after the surrender of Germany was thus an enormous undertaking, fraught with many difficulties.