Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. As of June 20, 1945 such groups were numbered 156 with 1783 of personnel. P 460-464. Since summer 1945 the fact of such group existence also became known for OUN/UPA, thus the NKVD stopped new groups creation and rejoin the existed to lager size formation (initially they can have from 3 to 50 persons depending on task). In 1946-47 such group was formed by MGB. Accordingly to report from 15 February 1949 4/001345 from Military Judge of Ukrainian area to Khrushchev, some special groups committed atrocities against the civil population in order to falsify their links with OUN/UPA and summon faked OUN/UPA detachments, sometimes even they exterminate Soviet agents from other region or authority . In many cases such crimes against Soviet law were hidden by local regional MGB staff, nevertheless some of such groups were prosecuted by Military Court.