Abyssinia invasion

Chemical weapons are not a new method of warfare, they have been in recorded use since about 2000 BC. However, science and technology have refined these weapons and now their potential is awesome. It was the rise of the modern chemical industry at the end of the nineteenth century that first made feasible the use of significant quantities of toxic chemicals on large-scale battlefields and, indeed, chemical weapons were first used on a significant scale by both sides in the First World War. They were then used immediately after the war by Britain in Iraq (1920), and Spain in Morocco (1921). They were also used by Italy during its invasion of Abyssinia (Ethiopia) in 1935-1936, Japan during its war against China in 1937-1943, and by the United States in Vietnam... 

The Italians made use of chemicals in their invasion of Abyssinia in... 

CW agents were reportedly used in several localised, mainly colonial, conflicts in the interwar years. Of particular note was the first major use of airborne delivery when Italy sprayed sulfur mustard from aircraft during its invasion of Abyssinia in 1935/36. A year later Japan began using chemical weapons on the Chinese mainland. 

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