Field Marshal Bahram Aryana ( Persian : بهرام آریانا ); also spelled Bahram Ariana born Hossein Manouchehri ; 17 March 1906 – 21 June 1985) was the most senior military commander of the Imperial Iranian Army during the reign of Mohammad Reza Pahlavi and an Iranian nationalist and humanist . Professor Monica M. Ringer described Aryana as probably the most famous "converted Zoroastrian " of the Pahlavi era .