Jane Caplan reviews Nazi party membership numbers.
Jane Caplan, Nazi Germany: A Very Short Introduction (New York: Oxford University Press, 2019), 77
The vast majority of Volksgenossen—in attitudes ranging from enthusiastic embrace to tight-lipped silence—reconciled or resigned themselves to a Germany now controlled by the NSDAP. The party was supposed to be the great engine of Volksgemeinschaft, powering a revolution of values as well as social structures that would leave neither private relations nor social networks untouched. By 1939, eight million Germans, or 10 per cent of the population, were members of the party (Parteigenossen) organized at the grass roots by 250,000 cell and block leaders. Tens of millions more were members of one or more of the plethora of official Nazi organizations, including the SA or SS, and the Hitler Youth or League of German Girls-these a supreme priority for a regime intent on indoctrinating the next generation. What these memberships actually meant in terms of ideological conviction was uneven.