The new streamlined gas mask, which some troops tried on for the ... in hot climates where soldiers may be naked to the waist. Contact us at letters@time.com ...

Narrator: These Army infantry recruits are being exposed to CS gas, more commonly known as tear gas to experience its effects and to learn how to properly use a gas mask. Here at the Maneuver ...

In 1914 a chemist called Fritz Haber offered his knowledge to the German Army. He soon began experimenting with chlorine gas ...

which contains a gas mask usage card and tape to make repairs to the gas mask. After the entry of the United States into the First World War in April 1917 the US forces were equipped with a mixture of ...