Voluntary Sports Societies of the Soviet Union
The Voluntary Sports Societies (VSS) of the USSR (Russian: Добровольные спортивные общества (ДСО) СССР, Dobrobolvolnye Sportivye Obshestva SSSR (DSO SSSR)) were the main structural parts of the universal sports and physical education (fitness) system, that existed in the USSR between 1935 and 1991. The Departmental Sports Societies (DSS) of the USSR (DSS-USSR) (Russian: Ведомственное спортивное общество (BCO) CCCP, Vedomstvennoye Sportivnoye Obshchestvo SSSR (VSO SSSR)) were only very few: Dinamo Voluntary society in support of Army, Aviation, and Fleet (DOSAAF) Armed Forces sports societies (CSKA, SKA, VO, DKA, DO, others).
Source: Wikipedia — Voluntary Sports Societies of the Soviet Union (CC BY-SA 4.0)