How Italy Turned Ethiopia into a Chemical Battlefield: Italian Chemical Warfare During the Second Italo-Ethiopian War (1935–1936)
Mustard Gas and Empire: Italian Chemical Warfare During the Second Italo-Ethiopian War (1935–1936) A Colonial War in the Age of Prohibited Weapons The Second Italo-Ethiopian War (1935–1936) stands as one of the most documented cases of large-scale chemical warfare in the interwar period. It was also a decisive moment in the crisis of the international order established after World War I, particularly the fragile prohibition regime surrounding chemical weapons. Italy’s extensive use of mustard gas (sulfur mustard) and other chemical agents against Ethiopian forces and civilians represented a deliberate violation of the 1925 Geneva Protocol, which Italy had signed but reserved the right to retaliate under contested conditions. Historian Angelo Del Boca, one of the foremost scholars on Italian colonial violence, emphasizes that the war “was not merely a conventional military campaign, but a laboratory of total colonial warfare in which the boundaries between combatant and civi...