The US is not the first to use CBW. In the Iran / Iraq war Sadam used nerve agents against both the Kurds and Iranians with devastating effects. The Russians used CBW on the Afgans in the 80's including one nicknamed 'flash' that killed so quickly the fighters died while still sighting down the barrels of their rifles. In the the Americas the French gave out infected blankets to native Americans destroying whole tribes and in the middle ages and before anthrax was deliverdd by launching dead animals over fortress walls to infect the populations.