Chronology of Soviet secret police agencies to operate as well. Chronology of Soviet secret police agencies <br> There was a succession of Soviet secret police agencies over time. The first secret police after the October Revolution, created by Vladimir Lenin's decree on December 20, 1917, was called "Cheka" (ЧК). Officers were referred to as "chekists", a name that is still informally applied to people under the Federal Security Service of Russia, the KGB's successor in Russia after the dissolution of the Soviet Union. For most agencies listed here secret policing operations were only part of their function; for instance, the KGB was both the secret police
National Military Union many skirmishes with both NKVD and Soviet Red Army. Its headquarters were destroyed in early spring of 1946, when Communist secret police arrested hundreds of its members. However, several units remained active until mid-1950s. National Military Union Narodowe Zjednoczenie Wojskowe (National Military Union, NZW) was a Polish anti-Communist organization, founded in November 1944, after collapse of the Warsaw Uprising. It was among the largest and strongest resistance organizations established in the Soviet-controlled Poland in mid- and late 1940s. The NZW consisted mostly of members of destroyed Narodowe Sily Zbrojne and disbanded Armia Krajowa. NZW's first commander was Colonel Tadeusz Danilewicz,