Austro-Hungarian Artillerymen Wearing Gas Masks Reloading a Field Gun Somewhere in Palestine (1917)

Austro-Hungarian artillerymen wearing gas masks reloading a field gun somewhere in Palestine, c. 1917.

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A Group of German Soldiers Wearing Gas Masks Posing With Grenades in a Trench During World War 1

A group of German soldiers wearing gas masks posing with grenades in a trench during World War 1.

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French Troops Wearing Gas Masks Posing in a Trench in Champagne, France (1916)

French troops wearing gas masks posing in a trench in Champagne, France, 1916. Animated stereoview.

Two Allied Soldiers Wearing Gas Masks Repairing a Telephone Line

Two Allied soldiers wearing gas masks repairing a telephone line during gas training in World War I.

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American Soldiers Undergoing Gas Mask Training

American soldiers undergoing gas mask training, c. 1918. Animated stereoview.

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French Soldiers Wearing Gas Masks Lifting a Man on a Stretcher

French medical personnel wearing gas masks lifting a man on a stretcher probably during a gas drill, c. 1918. Animated stereoview.

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