Kammala jumla mai zuwa: Bayan aiki a Gabas ta Tsakiya, Evans ya shiga Rundunar Sojan Sama ta RAF inda ya kasance jami'in sakonni a lokacin barkewar yakin duniya na biyu. A shekara ta 1941, an ba shi umurni na Fighter Interception Unit a Ford kuma yana da alhakin gabatar da sababbin hanyoyin da suka dace. Shi da kansa ya harbe mayakan abokan gaba guda biyu kuma an ba shi lambar yabo ta Flying Cross a shekarar 1942. A lokacin da yake da shekaru talatin, an ba shi mukamin kyaftin din kungiyar kuma ya tafi hedkwatar No. 11 (Fighter) Group da ke kula da ayyukan dare. A cikin 1943, an tura shi zuwa Bahar Rum inda ya ɗauki shirin siginar iska don
mamayewar Sicily. Daga baya ya yi irin wannan aiki a cikin Sojan Sama na Sojan Sama don saukar Normandy.