On April 22 1915, a greenish fog drifted over the battlefield north of Ypres in Belgium, choking to death some 5,000 French soldiers and heralding a new type of ...

Another war blogger, who uses the alias Two Majors ... photos of what they said were special forces operatives, wearing gas masks and moving along what looked like the inside of a large pipe.

In the lead-up to World War II there were fears that the Germans ... More than 40 million gas masks were issued. In America there was a gas mask for children that looked like Mickey Mouse, with ...

Experience British life on the brink of war through original news broadcasts ... including the evacuation of children and the distribution of gas masks. The beginning of the BBC's wartime role ...

Following is a transcript of the video. 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 ...