1917 – The first Soviet state security organization, the Vecheka, was created on 20 December 1917. The Vecheka (All-Russian Extraordinary Commission for Combating Counter-revolution and Sabotage) is more commonly known as the Cheka.
1918 - The NKVD (People’s Commissariat of Internal Affairs) had been formed to control the militia (police), criminal investigation departments, fire brigades, internal troops, and prison guards.
1922 – With the end of the civil war and the resulting period of stabilization, the Cheka was transformed, on 8 February 1922, into the GPU (State Political Directorate) which was subordinated to the NKVD.
1923 – With the formation of the USSR in 1923 the GPU became the OGPU (Unified State Poltical Directorate) and was upgraded to an independent directorate of the Soviet Council of People’s Commissars (i.e. it was removed from NKVD control).
1934 - In 1934 the OGPU was transformed into the GUGB (Chief Directorate of State Security) which was subordinated into the new All-Union NKVD. This marked the beginning of Soviet state security’s most powerful and autocratic period. All key aspects of internal and state security were now subordinated into one body under one leader – at first G.G. Yagoda, then, from 27 September 1936, N.I. Yezhov, and finally, from 25 November 1938 Lavrentii Beria.
In 1934 the NKVD was organized as follows:
- GUGB (Chief Directorate of State Security)
- GUPVO (Chief Directorate of Frontier Guards and Interior Troops)
- GULAG (Chief Directorate of Camps)
- GUM (Chief Directorate of the Militia)
- other units responsible for Fire Fighting, Local Anti-Aircraft Defence, Highway Construction, Archives, etc. .
On 2 February 1939 the GUPVO was divided into 6 Chief Directorates:
- GUPV (Chief Directorate of Frontier Guards)
- GUKV (Chief Directorate of Convoy Troops)
- GUVOVPGO (Chief Directorate of Troops for Guarding Industry and State Facilities)
- GUZhV (Chief Directorate of NKVD Railroad Troops)
- GUInzhV (Chief Directorate of NKVD Engineer Troops)
- GUIntV (Chief Directorate of the NKVD Intendants Service)
- GUOV (Chief Directorate of Operational Forces) since 1940
On 3 February 1941, Decree 149 of the CPSU Politburo removed the GUGB from the NKVD and elevated to equal People’s Commissariat status creating the NKGB. The NKGB was led by V.N. Merkulov, Beria’s former deputy, who remained a loyal lackey. The new NKGB was responsible for:
- external espionage,
- counter-espionage throughout the USSR3)
- operations to find and liquidate anti-Soviet parties and counter-revolutionary formations in the USSR
- guarding the leaders of the party and state.
- The NKGB organization was created at all levels (All-Union down to Oblast, Krai and Raion)
The NKGB was divided into:
- UR (Directorate of Intelligence)
- UK (Directorate of Counter-Intelligence)
- USP (Secret-Political Directorate)
- UKMK (Directorate of the Kommendant of the Moscow Kremlin)
1941 – The NKGB’s independence was short lived. In late June 1941, after the German invasion, the NKGB was resubordinated into the NKVD as the GUGB to ensure closer control of the nation’s security apparatus during this chaotic time.
1943 – In April 1943, after the military situation had changed in favour of the USSR, the GUGB was again removed from the NKVD and became the NKGB. This time the change lasted until the birth of the MGB in 1946.
1946 – In March 1946 the Soviet government was restructured and all People’s Commissariats (NK) were redesignated Ministries (M). Thus the NKVD became the MVD and the NKGB became the MGB. Merkulov was replaced as head of the new MGB by V.S. Abakumov, S.N. Kruglov replaced Beria as head of the MVD, and Beria became a full member of the Soviet Politburo and a deputy chairman of the Council of Ministers exercising full control over the MVD and MGB.
1953 – On 6 March 1953, the day after Stalin died, Beria succeeded in uniting the MVD and MGB into one body, the MVD.
1954 – On 13 March 1954, after Beria’s fall, ” secret trial”, and execution, the monster unified MVD was again split up. The reformed MVD retained its traditional policing and internal security functions while the new KGB took on the state security functions of the MGB. The KGB was subordinated to the USSR Council of Ministers, the Soviet Cabinet.