Chemical defense (1924-1925)

Flying aircraft, it starts to spray poisons.

The gas cloud on the ground.

The plane sprays poisonous substances discharged gas bomb.

Face D. Rockefeller

The soldiers in gas masks sit in a trench in readiness to begin training the gas attack, open valves of gas cylinders.

Gas flares out from the hoses.

Gas spread along the ground.

gas cloud near the big gun.

Gas spreads on forest clearing after the explosion of the gas grenades.

Flamethrower calculation of position.

Red Army in the security kit keeps the gas hose.

From the trench are pulled out of the jet fire, burning grass, lifted up black smoke.

The tank drove up to the barbed wire.