Whakaotihia te rerenga e whai ake nei: I whakahau a General Prezan i te 4th Army Corps i te 1915-1916, a ka noho hei upoko o te Rōpū Tuawha o Romanian i te wa o te Romanian Campaign i muri mai i te tau 1916, ki nga ope o nga Central Powers. I ārahi a Prezan i ngā Hāhi Taua o Romania i te
Ko te Pakanga o Bucharest (Noema-Hōngongoi 1916), a, i te mea i hoki mai aua ope ki te taha raki-rawhiti o Romania (Moldavia). I te Hōngongoi me Akuhata 1917, ko Prezan, i taua wa ko ia te Tumuaki o te Kaimahi Nui (me te awhina a te Kaihauturu-Karauna a Ion Antonescu) i angitu te aukati i te whakaekenga a Tiamana i arahina e Field Marshal August von Mackensen. I mahi tonu ia i tenei tuunga tae noa ki te 1920.