Teaching in one part of the Black Sea Fleet marines. Sailors overcome obstacles. Marine Corps combat vehicles boost water line. Soviet soldiers help with the harvest of grain at the farm "Red Flag" Tselinograd region. One of the engineer units of the Czechoslovak People's Army brings a pontoon bridge across the water hazard. Training tank battle. The tanks are on a pontoon bridge to the opposite side and start fighting. Tenth Cup friendly armies Military Triathlon, held in a suburb of Leningrad. Participating teams of the USSR, Bulgaria, Hungary, the DRV, Cuba, Mongolia, Korea. Shooting competition of the machine, throwing grenades, running for 200, 400m hurdles.