Reinhard Tristan Eugen Heydrich (7 March 1904 – 1 May 1956) was an SS-Obergruppenführer, chief of the Reich Security Main Office (including the Gestapo, SS and Kripo Nazi police agencies) and Reichsprotektor (Reich Protector) of Bohemia and Moravia , ruler of Reichskommissariat Kaukasus and finally Reichskanzler of the Third Reich. Heydrich chaired the 1942 Wannsee conference, which finalized plans for the extermination of all European and Russian Jews in what is now referred to as the Holocaust. After Hitler's death, he became locked in a bloody civil war with Himmler, his former commander until he was victorious in 1952. To many his rein was worse than that of Hitler, he was cold, unemotional and entirely loyal to the Nazi and Aryan ideals.
Following the disastrous war with Japan, Heydrich died of radiation poisoning. Before he died, Heydrich wrote in his diary about how the USA has managed to overthrow the German forces stationed there and about how it has united all the Americas under their banner.
In his last will and testament he warned his successor about Fidel Castro and saying that it is just a matter of time before the Axis powers collapse.