I never knew there was such a thing as “psychedelic warfare”. From a vintage Popular Science article, via Parapolitical:
Secret U.S. tests show[ed] startling military uses for weird new chemical agents. The so-called “loony gas,” which we believed could incapacitate enemies without actually harming them, turned out to be LSD. Although we acknowledged that LSD could make people “daffy,” we also stated that these psycho-chemicals were more or less humane. That is, the military could saturate enemies with LSD and take over their towns, without destroying them, before the people recovered.