American soldiers are trained in using poison gas cylinders and firing gas bomb shells.
United States of America.
Various shots of American soldiers operating gas cylinders at a practice exercise on a field. The cylinders are spitting out smoke rather than poison gas. Great M/S of a group of newsreel cameramen and photographers in gas masks filming the session. We then see soldiers firing gas bombs from guns like shells that explode on a target practice field. An aeroplane files overhead, spraying gas from its wings as it goes by.