TIL that Tear/CS gas is prohibited use in war not because of the physical effects, but that it prevents escalation.
One side sends over CS gas grenades, the other responds with a nerve agent, and then nukes start to fly.
Maybe that's why we had to learn how to fight in NBC (Nuclear, Biological, Chemical) suits back in basic training.
All I can say is MOPP IV sucks ass.. the charcoal lining would make you sweat your ass off

