Rubuta ci gaba don wannan sakin layi - Bayan mamayewar Jamusanci da Soviet na Poland, wanda ya fara Yaƙin Duniya na II a watan Satumbar 1939, Augustów ya mamaye
ta Tarayyar Soviet har zuwa 1941. An tura mazauna da yawa zuwa gudun hijira a Kazakhstan, daga inda wasu suka sami damar dawowa bayan shekaru 6. A ranar 22 ga Yuni, 1941, kafin Jamusawa su kama garin, Soviets sun kashe fursunonin Poland 30-34 a cikin Augustów a matsayin wani ɓangare na kisan gillar fursunonin NKVD. Sojojin Nazi na Jamus sun mamaye Augustów har zuwa 1944, kuma suna aiki da sansanin aikin tilas a garin. Yaƙin Duniya na II ya kawo lalacewar kusan kashi 70% na garin da mutuwa ko ƙauracewar yawancin mazaunanta, daga cikinsu akwai al'ummar Yahudawa dubu da yawa waɗanda aka ɗaure a cikin ghetto da ke tsakanin canal da kogin. 'Yan Jamus sun kashe kusan dukansu kafin su tafi. A cikin 1945 Soviets sun gudanar da kewaye da Augustów - wani aiki na musamman akan tsoffin mayakan Armia Krajowa masu adawa da kwaminisanci.