Joint exercises of the armies of the USSR, Czechoslovakia, East Germany and Poland

Polish People's Republic. September 1969. A motorized rifle battalion of the Czechoslovak People's Army disembarks from a Soviet Mi-6 heavy helicopter behind enemy lines during joint exercises of the armies of the USSR, Czechoslovakia, the GDR, and the Polish People's Republic. The exact date and location of the photo have not been established. Vladimir Musaelyan/TASS