Show ancients used gas warfare the earliest use ot of deleterious gases gabes in siege warfare is recorded in the history of the peloponnesian wars from to B C during this struggle between the athenians and Spar spartano spartans tans and their respective allies the cities or of platea and dellum delium were besieged wood saturated with pitch and sulphur was set bet on fire and burned under the walls walla of these cities in order to generate choking and poisonous fumes which would stupefy the defenders and render tho the task of the attacking forces less difficult |