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gas mask: Media
protective device
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Observe English schoolchildren practicing using gas masks in case of a chemical attack amid World War II
The gas mask became a part of modern warfare with the introduction of chemical weapons...
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gas mask
Modern soldiers and civil defense units are equipped with gas masks and protective...
© Vladimir Melnik/Shutterstock.com
gas masks in World War I
French officer demonstrates how to use a gas mask in World War I.
Encyclopædia Britannica, Inc.
gas masks at the Second Battle of Ypres
Australian soldiers wearing gas masks during the Second Battle of Ypres, 1915.
© Photo12—Universal Images Group/Getty Images
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