In elections held on 4 December 1938, 97.32% of the adult population in Sudetenland voted for the NSDAP (most of the rest were Czechs who were allowed to vote as well). About half a million Sudeten Germans joined the Nazi Party, which amounted to 17.34% of the German population in the Sudetenland (the average in Nazi Germany was 7.85%). Because of their knowledge of the Czech language, many Sudeten Germans were employed in the administration of the Protectorate of Bohemia and Moravia as well as in the Nazi oppressive machinery such as the Gestapo. The most notable was Karl Hermann Frank, the SS and Police general and Secretary of State in the Protectorate.