Ready for Labour and Defence of the USSR

Ready for Labour and Defence of the USSR (Russian: «Готов к труду и обороне СССР» Gotov k trudu i oborone SSSR), abbreviated as GTO (Russian: ГТО) was the All-Union physical culture training programme, introduced in the USSR on March 11, 1931 on the initiative of the Komsomol. It was a complement to the Unified Sports Classification System of the USSR. While the latter provided Soviet physical education system requirements only for athletes, GTO was a programme for all Soviet people of almost all ages.

Source: Wikipedia — Ready for Labour and Defence of the USSR (CC BY-SA 4.0)