 Anotsigira kupandukira kwavarimi muna 1907 uye Hondo Yenyika I yeRomania, Antonescu ainzwira tsitsi mapoka akarerekera kurudyi uye echiFascist National Christian neIron Guard kwenguva yakawanda yepakati pehondo. Akanga ari mukuru wemauto kuFrance uye gare gare mukuru weGeneral Staff, achishanda kwenguva pfupi saGurukota rezvekudzivirirwa muNational Christian cabinet yaOctavian Goga pamwe neFirst Cristea cabinet yakazotevera, umo akashandawo saGurukota reMhepo neMarine. Mukupera kwema1930, maonero ake ezvematongerwo enyika akamuisa mukukakavadzana naMambo Carol II uye zvakatungamira mukusungwa kwake. Antonescu zvisinei akasimuka kuita mukurumbira wezvematongerwe enyika panguva yedambudziko rezvematongerwe enyika ra1940, uye akatanga National Legionary State, kudyidzana kusinganetsi nemutungamiri weIron Guard Horia Sima. Pashure pokupinda muRomania musungano neGermany yeNazi uye kuva nechokwadi chokuvimba kwaAdolf Hitler, iye akabvisa Varindi mukati meKupandukira kweLegionaryra1941. Mukuwedzera pakuva Mutungamiriri wehurumende, akashandawo saGurukota rake rezvekunze uye Gurukota rezvekudzivirirwa. Nokukurumidza pashure pokunge Romania yabatana neAxis muOperation Barbarossa, ichidzorera Bessarabia neNorthern Bukovina, Antonescu akavawo Marshal weRomania. 