October Revolution event. 7 November, the anniversary of the October Revolution, was the official national day of the Soviet Union from 1918 onward and still is a public holiday in Belarus and the breakaway territory of Transnistria. The October revolution of 1917 also marks the inception of the first communist government in Russia, and thus the first large-scale socialist state in world history. After this Russia became the Russian SFSR and later part of the USSR, which dissolved in late 1991. October Revolution The October Revolution (), officially known in Soviet literature as the Great October Socialist Revolution (, '), and commonly
NKVD (INU); GUGB political police unit represented by Secret Political Department (SPO) became Secret Political Directorate (SPU), and so on. The former GUGB 4th Department (OO) was split into three sections. One section, which handled military counter-intelligence in NKVD troops (former 11th Section of GUGB 4th Department OO) become 3rd NKVD Department or OKR (Otdel KontrRazvedki), the chief of OKR NKVD was Aleksander Belyanov.<br> After the German invasion of the Soviet Union (June 1941),the NKGB USSR was abolished and on July 20, 1941 the units that formed NKGB becomes part of NKVD USSR. The military CI was also upgraded from department