Kammala jumlar da ke gaba: A ranar 17 ga Satumba, 1939, bayan mamayewar Jamus na yammacin Poland daidai da yarjejeniyar sirri ta Molotov-Ribbentrop Pact, sojojin Soviet sun mamaye gabashin Poland. Kamar yadda yawancin sojojin Poland suka tattara a yammacin da ke yaƙi da Nazi Jamus, Red Army sun haɗu da iyakantaccen juriya kuma dakarunsu sun yi sauri zuwa yamma, suna mamaye yankin Voivodeship tare da sauƙin sauƙi. Sun hadu da 'yan Jamus masu mamayewa tare da Layin Curzon kuma sun riƙe
wani bikin nasara na hadin gwiwa.