<prompt> Bhala okuqhubekayo kwalesi sigaba - IMpi Yezwe II eYurophu yaqala ngoLwesihlanu 1 September 1939 lapho amabutho aseJalimane ehlasela iPoland. Ngaleso sikhathi, i-III. I-Gruppe yayingaphansi komyalo ka Hauptmann uKaputeni uWerner Mölders futhi yayisanda kwakhiwa eWiesbaden-Erbenheim ngomhlaka 26 Septhemba 1939. Isikhulu esiphethe sikaMüller esingu-8. Igama elithi Staffel lalisho ukuthi Oberleutnant Isikhulu Sombutho uHans von Hahn. UMüller waba semishini yempi ngesikhathi seMpi Yomshoshaphansi futhi wathola i-Iron Cross 2nd Class ngomhlaka 17 Ephreli 1940. Wathola ukunqoba kwakhe kokuqala emoyeni phakathi neMpi yaseFrance. Ngomhlaka 27 Meyi 1940, ngesikhathi sokukhishwa kweDunkirk, wadutshulwa i-Armée de lAir Curtiss Hawk endaweni eseduze nase-Amiens. Ngo-10 Juni, wahlonishwa ngokucekela phansi izindiza ezintathu zaseFrance iMorane-Saulnier M.S.406. I Geschwader indiza imisebenzi yayo yokugcina yempi eMkhankasweni waseFrance ngoJuni 19. Ngo-June 20, i-III. I-Gruppe yanikeza isembozo sezindiza eziseduze kwaseCompiègne ngesikhathi kuxoxiswana ngezingxoxo zokuqeda impi  <response>: eyasayinwa ngoJuni 22. 