 Pedzisa mutsara unotevera: Kupinda kweNazi Germany muPoland musi wa1 September 1939, uye kuzivisa kweBritain neFrance hondo kuGermany mazuva maviri gare gare kunoratidza kutanga kweHondo Yenyika II. Pashure pokuziviswa kwehondo, Europe yokumadokero yakaona kurwisana kuduku zvikuru kwenyika kana kuti kwemhepo pakutanga, uye nhambo yacho yakatumidzwa kuti Hondo Yokunyepedzera. MuEastern Europe, zvisinei, chibvumirano pakati peSoviet Union neNazi Germany chakasainwa musi wa 23 August chakazarura nzira muna September nokuda kwekupinda kweSoviet Union kumabvazuva kwePoland, iyo yakakamurwa pakati pevapambi vaviri vasati vapera mwedzi wacho. Soviet Union inotanga kurwisa kwechiuto kutsva nakupinda muFinland pakupera kwaNovember. 