Ka cika wannan jumlar: An kafa Jamhuriyar Poland ta Biyu a shekara ta 1918 kuma ta kasance ƙasa mai zaman kanta har zuwa shekara ta 1939, sa'ad da Nazi Jamus da Tarayyar Soviet suka mamaye Poland, hakan ya sa aka soma Yaƙin Duniya na Biyu. Miliyoyin 'yan ƙasar Poland na addinai daban-daban ko asali sun mutu a lokacin mamayar Nazi na Poland tsakanin 1939 da 1945 ta hanyar kisan kare dangi da kisan kiyashi. Duk da haka gwamnatin Poland da ke gudun hijira ta yi aiki a duk lokacin yakin kuma 'yan Poland sun ba da gudummawa ga nasarar Allied ta hanyar shiga cikin yakin basasa a gabashin da kuma yammacin.
Yammacin gaba. Ci gaban yamma na Red Army na Soviet a cikin 1944 da 1945 ya tilasta sojojin Nazi na Jamus su janye daga Poland, wanda ya haifar da kafa wata ƙasa ta gurguzu, da aka sani daga 1952 a matsayin Jamhuriyar Jama'ar Poland.