Chemical defense (1924-1925)

An airplane flies by, starts spraying poisonous substances.

A gas cloud on the ground.

An airplane sprays poisonous substances, drops a gas bomb.

The face of D. Rockefeller.

Red Army soldiers in gas masks sit in a trench ready to begin a training gas attack, open the valves of gas cylinders.

Gas comes out of the hose sockets.

Gas spreads along the ground.

A gas cloud next to an artillery piece.

Gas spreads across a forest clearing after a gas grenade explodes.

A flamethrower crew in position.

A Red Army soldier in protective gear holds a gas hose.

Streams of fire burst from the trench, the grass burns, and clouds of black smoke rise upward.

A tank drives up to barbed wire fences.