Kammala jumla mai zuwa: Tarihin Poland daga 1939 zuwa 1945 ya ƙunshi farko lokacin daga mamayewar Poland ta Nazi Jamus da Tarayyar Soviet zuwa ƙarshen Yaƙin Duniya na II. Bayan yarjejeniyar rashin cin zarafin Jamus da Soviet, Nazi Jamus ta mamaye Poland a ranar 1 ga Satumba 1939 da Tarayyar Soviet a ranar 17 ga Satumba. Yaƙin ya ƙare a farkon Oktoba tare da Jamus da Tarayyar Soviet sun raba kuma sun haɗa Poland gaba ɗaya. Bayan harin Axis a kan Tarayyar Soviet a lokacin rani na 1941, dukan
Poland ta mamaye Jamus, wacce ta ci gaba da gabatar da manufofin wariyar launin fata da kisan kare dangi a duk faɗin Poland. A ƙarƙashin ayyukan biyu, 'yan ƙasar Poland sun sha wahala da yawa na mutane da kayan aiki. Dangane da ƙididdigar Cibiyar Tunawa da Ƙasar, kimanin 'yan ƙasar Poland miliyan 5.6 sun mutu sakamakon mamayar Jamus kuma kimanin 150,000 sun mutu sakamakon mamayar Soviet. Yahudawa sun zaba da Jamusawa don gaggawa da kuma kawar da su gaba daya kuma kimanin kashi 90 cikin dari na Yahudawa na Poland (kusan mutane miliyan uku) an kashe su a matsayin wani ɓangare na Holocaust. An kashe Yahudawa, 'yan Poland, Romawa da fursunoni na sauran kabilu da yawa "a cikin taro" a sansanonin kisan Nazi, kamar Auschwitz, Treblinka da Sobibór. 'Yan kabilar Poland sun sha wahala a hannun Nazi Jamus da kuma Soviet. An kiyasta cewa 'yan Jamus sun kashe 'yan Poland miliyan biyu. Suna da shirye-shiryen gaba don juya ragowar yawancin 'yan Poland zuwa aikin bayi da kuma kawar da waɗanda aka ɗauka a matsayin "marasa so" a matsayin wani ɓangare na "Generalplan Ost". Tsabtace kabilanci da kisan kiyashi na 'yan Poland da kuma dan kadan' yan Ukraine sun kasance a yammacin Ukraine (Kresy na Poland kafin yakin) daga 1943. 'Yan kishin kasa na Ukraine ne suka kashe mutanen Poland.