Rubuta ci gaba don wannan sakin layi - Bayan wani sihiri a matsayin mai koyarwa a Burtaniya, Plagis ya koma aiki a watan Satumbar 1943 a matsayin kwamandan rundunar No. 64, yana tuka Spitfire Mk VCs a arewacin Faransa. Ya dauki umurnin No. 126 (Persian Gulf) Squadron a watan Yuni 1944, kuma ya jagoranci hare-haren da yawa a kan matsayi na Jamus a lokacin mamaye Faransa da yakin
wanda ya biyo baya; an harbe shi a kan Arnhem a lokacin Operation "Market Garden", amma kawai rauni ne kawai. Bayan canzawa zuwa Mustang IIIs, ya umurci wani reshe da aka kafa a RAF Bentwaters wanda ya goyi bayan aikin fashewar bama-bamai. Ya gama yakin tare da mukamin shugaban rundunar soji kuma ya kasance tare da RAF bayan haka, yana aiki da Gloster Meteors a shugaban No. 266 (Rhodesia) Squadron.