15. Egyptian Military Against Yemeni Soldiers and Civilians, 1963-1967: 527 Casualties
In the 1960s, Egypt was engaged in a little-known war against Yemen to assert cultural hegemony over the Arab region. As part of the war, it included in multiple campaigns that involved dropping phosgene, mustard gas, and nerve agents on villages and other civilian targets.
One such attack occurred on the Yemeni village of Kitaf on January 5, 1967, when Egyptian air forces dropped 27 phosgene bombs onto the villagers. An estimated 150 people died in the attack, and hundreds more were wounded in an attack that effectively wiped out the village.
