19 15 On April 22nd, the German army released chlorine gas on the ypres defense line in Belgium, which was the fog of ypres that shocked the world. It was the first large-scale use of chemical weapons in the history of human war. Modern chemical and biological weapons have thus entered the stage of war, leaving gloomy and terrible memories for people all over the world.

During the First World War, there were more than 40 kinds of poisons used by human beings, such as chlorine, phosgene, diphosgene, chloropicrin, diphenylarsine, hydrocyanic acid, mustard gas, etc. The dosage of poisons reached120,000 tons, and the number of casualties was about1300,000, accounting for 4.6% of the total number of war casualties.

Extended data:

I. Chemical weapons

Toxic substances used to poison people and animals and destroy the ecology in war are called military poisons. Shells, bombs, rockets, missiles, mines, cloth sprinklers, etc. filled with military poisons are collectively called chemical weapons.

Second, the varieties of chemical agents

Mustard gas, mixture of mustard gas and Lewis gas, diphenylarsine hydrocyanic acid, phosgene, benzophenone, etc. Many poisonous agents are very toxic. During the war, mustard gas was called the king of poisonous gas, while Lewis gas was called "the dew of death". So far, there are still no effective methods and drugs to treat the victims of these poisons. Once the victim, or death, or suffer considerable pain and long treatment.

Baidu Encyclopedia-ypres Chemical Warfare

Baidu encyclopedia-chemical weapons