Kammala jumla mai zuwa: A cikin 1939, bayan mamayewar Poland, wanda ya fara Yaƙin Duniya na II, Gdańsk Pomerania ya haɗu da Nazi Jamus kuma ya haɗu da sabon lardin Reichsgau Danzig-West Prussia. A lokacin da
A ƙarƙashin mamayar Jamus, an kama mutanen Poland da yawa, an danne su, an tura su zuwa sansanonin Nazi, an kore su da kisan gilla. An kama mutane da yawa musamman game da malamai da limaman Poland, kuma an gudanar da su a watan Satumba da Oktoba 1939. An kashe firistoci 16 a filin harbi na gida, wasu kuma an daure su a Tczew, kuma daga baya aka kashe su yayin kisan kiyashi na 'yan Poland a cikin Dajin Szpęgawski. A ranar 20 ga Oktoba, 1939, an kashe mazauna 44 a cikin Dajin Szpęgawski. Jamusawa sun cire alamun al'adun gargajiyar Poland daga babban cocin da seminary, kuma sun sace ko kuma sun lalata tarin tarihin Poland, gami da laburari da kuma adana bayanai. "Einsatzkommando 16" ya kafa kurkuku ga 'yan gwagwarmayar Poland na gida, malamai da firistoci a makarantar, kuma daga baya aka kashe wadanda aka kashe a cikin gandun dajin Szpęgawski, aka tura su zuwa sansanonin taro, ko kuma aka tura su kurkuku a Starogard Gdański. A cikin 1940 Jamusawa ba da daɗewa ba suka yi aiki da wani sansanin sansanin Stutthof a cikin garin.