This is an old clip of a study of the effects of LSD on combat troops. It appears to be from around the 1940’s, and I don’t have any clue where it came from originally. But its mildly amusing to see a bunch of highly trained killing machines walking around aimlessly and falling over laughing.
LSD is typically delivered orally, usually on a sugar cube or in some sort of food product, so I’m guessing they were trying to determine how they could weaponize it by contaminating an enemy’s water supply or food supply. One surefire way to win is to make the other side not care if they fight any longer!