Chemical weapon used in World War I
Chemical weapons were first used in World War I to demoralize, injure and kill. It’s sad that technology and weapons develop mostly during wars, but as it seems, people use their intelligence only when they’re life is in danger or when they want to destroy or kill someone/something.
Most frequent of those chemical weapons were tear gas, mustard gas, phosgene and chlorine.
In the later stages of the war, as the use of gas increased, its overall effectiveness diminished. The widespread use of these agents of chemical warfare, and wartime advances in the composition of high explosives, gave rise to an occasionally expressed view of World War I as “the chemists’ war”.