Reinhard Heydrich was a high-ranking German Nazi official during the World War II. He played a major role in planning the Holocaust and many historians consider him one of the darkest and most fearsome men within the Nazi Party. Hitler described him as "the man with the iron heart". While the Nazis called him ‘The Blond Beast’, others referred to him as the ‘Hangman Heydrich’. He was ambitious for power and was a manipulator. He led Hitler's Final Solution in which the almost entire Jewish population of Europe was exterminated. The founding head of the Sicherheitsdienst (SD), he also served as the chief of the Reich Security Main Office, and the police agency. He converted the Gestapo into an instrument of terror. He convened the Wannsee Conference, where he presented the plans to coordinate a European-wide ‘Final Solution’ of the Jewish extermination. The British Special Operations Executive plotted to kill him in Prague, where he was the Deputy Reich Protector of Bohemia and Moravia. In the top-secret ‘Operation Anthropoid’, a team of Czech and Slovak soldiers critically wounded him in an ambush. He died from his injuries. After his funeral in Berlin, Hitler ordered retaliatory measures against the Czech population.