Deputy Führer

Deputy Führer (German: Stellvertreter des Führers, more faithfully translated as "Deputy of the Führer") was the title for the deputy head of the Nazi Party, which was held by Rudolf Hess until his flight to the United Kingdom in 1941. After this event, Adolf Hitler abolished the office and replaced it with the office of Party Chancellery, which was given to Martin Bormann.

Source

 * Encyclopedia of the Third Reich