in wars like Iran-Iraq, soldiers aren't the targets. And I would doubt that all the kids used as cannon fodder by Iran, for instance, were so well equipped.
http://en.wikipedia.org/wiki/Chemical_warfareIran-Iraq War
The Iran-Iraq War began in 1980 when Iraq attacked Iran. Early in the conflict, Iraq began to employ mustard gas and tabun delivered by bombs dropped from airplanes; approximately 5% of all Iranian casualties are directly attributable to the use of these agents.
About 100,000 Iranian soldiers were victims of Iraq's chemical attacks. Many were hit by mustard gas. The official estimate does not include the civilian population contaminated in bordering towns or the children and relatives of veterans, many of whom have developed blood, lung and skin complications, according to the Organization for Veterans. Nerve gas agents killed about 20,000 Iranian soldiers immediately, according to official reports. Of the 80,000 survivors, some 5,000 seek medical treatment regularly and about 1,000 are still hospitalized with severe, chronic conditions. Iraq also targeted Iranian civilians with chemical weapons. Many thousands were killed in attacks on populations in villages and towns, as well as front-line hospitals. Many still suffer from the severe effects.
Despite the removal of Saddam and his regime by Coalition forces, there is deep resentment and anger in Iran that it was Western companies based in West Germany, France, and the U.S. that helped Iraq develop its chemical weapons arsenal in the first place, and that the world did nothing to punish Iraq for its use of chemical weapons throughout the war.
(photo) Victims of Iraq's poison gas attack in civil area during Iran-Iraq war . Chemical weapons which had been delivered to Saddam killed and injured numerous Iranian and Iraqis. According to Iraqi documents, assistance in developing chemical weapons was obtained from firms in many countries, including the United States, West Germany, the United Kingdom, France and China.
I hadn't thought that Iran's hands were exactly clean in this regard. Phosphene, though, yeah, not a big factor.