Kammala wannan jumla: Bayan mamayewar Jamus da Soviet ta Poland, wanda ya fara Yaƙin Duniya na II a watan Satumbar 1939, garin ya
Jamus ta mamaye, wanda ya gudanar da yakin basasa a kan 'yan Poland da Yahudawa na gida. Chełmża na ɗaya daga cikin wuraren da aka kashe 'yan Poland da Jamus ta yi a 1939 a matsayin wani ɓangare na "Intelligenzaktion". Yawancin 'yan Poland na gida, musamman malamai, an kuma kashe su a cikin gandun daji na Barbarka a cikin Toruń na yanzu, kuma a matsayin wani ɓangare na "Intelligenzaktion". Gwamnatin Jamus a wancan lokacin ta dauki 'yan Poland da yahudawa a matsayin "untermenschen" kuma ta shirya kawar da su a matsayin kungiyoyin kasa. Don guje wa wannan makomar yawancin 'yan Poland na gida sun ɗauki rukuni na III da na IV na Volksliste. A farkon shekarar 1945, a Chełmża, 'yan kasar Poland da aka tilasta yin aiki da aka kwashe daga Jajkowo,' yan Jamus sun tilasta su shiga kungiyar Todt, duk da haka, wasu sun yi nasarar tserewa. Sakamakon kisan gillar Jamus da zalunci yawan mutanen garin ya ragu zuwa 10,000 a watan Maris na shekarar 1945.