After the German Invasion of Poland and World War II breaks out, Heydrich is promoted to Chief of the Reich Security Main Office. His "Einsatzgruppen" mobile death squads follow the German Army, committing genocide across Eastern Europe. He blackmails General Eduard Wagner into sending the "Einzatsgruppen" information to allow them to exterminate Jews and other "undesirables". In September 1941, Heydrich is appointed Acting Reich Protector of the Protectorate of Bohemia and Moravia, declaring that he will turn Prague into a "Jew-free" city. On 22 January 1942, Heydrich chairs the Wannsee Conference, to ensure there is a "Final Solution" for the genocide of Jews. In May 1942, Heydrich is attacked by Czech resistance fighters.