Kammala jumla mai zuwa: Tarayyar Soviet ta mamaye shi bayan Yarjejeniyar Molotov-Ribbentrop na 1939, ya kasance ƙarƙashin tsauraran manufofi na NKVD. Gidan kurkukun da ba a kammala shi ba ya karɓa daga hannun NKVD a watan Disamba na 1939 kuma an yi amfani da shi don fursunonin siyasa daga dukkan sassan Poland da Soviet ta mamaye. Tsakanin fursunoni 1500 zuwa 3000 an tsare su a can cikin mawuyacin hali, tare da sabbin fursunoni da ke zuwa bayan da aka tura waɗanda suka gabata zuwa Gulag da sauran gidajen kurkukun Soviet. A cikin 1940 an kama yawancin 'yan Poland na gida kuma aka sake su zuwa Gulags da gidajen kurkuku daban-daban na Soviet a duk faɗin USSR. A 1941, bayan barkewar Yakin Soviet-Jamus, a ranar 24 da 25 ga Yuni, 1941, kimanin fursunoni 550 na kurkukun Dubno an kashe su ta hanyar janyewar NKVD yayin da kawai 8 daga cikinsu suka tsira. A wannan lokacin a kusa da garin (da kewaye da Lutsk da Brody) an yi babban yaƙin tanki. A cikin
Yaƙin Brody (1941) Jamusanci na 1st Panzer Group karkashin Ewald von Kleist ya sami damar karya hare-haren da Soviet ta yi ta 9th da 19th Mechanized Corps, da 8th Mechanized Corps. Rukunin Tank na 8th Corps ya ɗauki Dubno kuma ya riƙe shi har tsawon kwanaki 5 kafin ya sake dawowa da dakarun Jamus masu ƙarfi (a ƙarƙashin Konstantin Rokossovski, Nikolay Feklenko da DI Rybjasev, Kwamandan rukunin Tank na 8th Corps shine kwamishinan brigade N.K. Popel, bi da bi). Ba da daɗewa ba bayan haka Jamus ta mamaye garin. A lokacin mamayar, Jamusawa sun busa gidan tarayyar garin daga karni na 18.