Ka dib markii uu tababar ku soo qaatay UK, Plagis wuxuu ku soo laabtay howlgalkii bishii Sebtember 1943 isagoo ahaa taliyaha No. 64 Squadron, oo ka duulaya Spitfire Mk VCs waqooyiga Faransiiska. Waxa uu qabtay amarkii No. 126 (Persian Gulf) Squadron bishii Juun 1944, wuxuuna hoggaamiyay weeraro badan oo lagu qaaday jagooyinka Jarmalka intii lagu jiray duulaankii Faransiiska iyo ololihii ka dambeeyay; waxaa lagu soo riday Arnhem intii lagu jiray Howlgalka "Market Garden"
Dhaawacyo fudud oo kaliya. Ka dib markii uu u wareegay Mustang IIIs, wuxuu amar ku bixiyay garab fadhigiisu yahay RAF Bentwaters oo taageeray howlgallada duqeynta. Wuxuu ku dhameeyay dagaalka isagoo haysta darajada hogaamiyaha duulimaadka wuxuuna ku sii jiray RAF kadib, isagoo ka hawlgalaya Gloster Meteors oo madax ka ah No. 266 (Rhodesia) Squadron.