WW1 - Gas attack

The video tutorial discusses the first gas attack by the Germans in 1915 during WWI, focusing on the use of chlorine gas. It describes the initial impact on French troops and subsequent attacks on Canadians, who used improvised methods for protection. The evolution of gas masks is detailed, from flannel hoods to the more effective small box respirator, which provided better defense against stronger gases like phosgene and mustard gas. The tutorial concludes with instructions on how to use the small box respirator.

What improvements were made to gas masks after the initial designs?

Explain how the small box respirator functioned as a defense against gas.