Mezue ahịrịokwu na-esonụ: Mgbe mwakpo Soviet nke 1939, Bronna Góra tinyere ọtụtụ Polesie Voivodeship sonyeere Soviet Belarus mgbe ntuli aka nke NKVD kpebiri na ikuku nke ụjọ. Ndị amaala niile bi na mbụ mana amụrụ na Poland ga-ebi na Byelorussian Soviet Socialist Republic site na mgbe ahụ gaa n'ihu, dị ka ndị Soviet, ọ bụghị Polish. Otú ọ dị, ọchịchị ndị Soviet adịteghị aka n'ihi na e mebiri nkwekọrịta kwekọrọ na ya nke Molotov-Ribbentrop Pact nke e bịanyere aka na ya na mbụ na Moscow mgbe ndị agha Germany gafere ókèala ahụ.
Mpaghara Soviet na-arụ ọrụ na 22 June 1941. Site na 1941 ruo 1943 ógbè ahụ nọ n'okpuru nchịkwa nke Nazi Germany, nke ndị ọrụ aka nke Byelorussian Central Council kwadoro site n'aka ndị agha ndị Nazi Belarusian nke Byelorussian Homeland Defense.