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 were renamed "ministries". Accordingly, the Peoples Commissariat of Internal Affairs (NKVD) of the USSR became the Ministry of Internal Affairs (MVD), while the NKGB was renamed as the Ministry of State Security (MGB). In 1953, after the arrest of Lavrenty Beria, the MGB merged back into the MVD. The police and security services finally split in 1954 to become: In 1935–1945 Main Directorate of State Security of NKVD had its own ranking system before it was merged in the Soviet military standardized ranking system. 1 – 1943; 2 – 1943–1945. The main function of the NKVD was to protect the