Oddly enough if you joined the British Army in days of yore you might have found yourself ordered to take LSD.
https://www.youtube.com/watch?v=ziqpwkhqTRs
( Likely also true for other countries, eg: USofA, etc )
https://www.youtube.com/watch?v=ziqpwkhqTRs
( Likely also true for other countries, eg: USofA, etc )
Why shouldn’t they be marching the soldiers?
If nothing else, the double edged sword application of chemical weapons was well known at this point.
Making an incapacitated enemy dead: Easy.
Making a dead civilian/ally un-dead: Necromancy.