This is the most unintentionally funny video clip I’ve ever seen. It’s the incongruity of the stiff upper lip military commentary, combined with the fact that these marines are tripping out of their skulls and experiencing the world in a completely different way. The delicious irony is not lost on the troop commander (also part of the experiment) who says – in a deadpan tone, one imagines – “I cannot do anything about this. I cannot control the men and I can take no action myself. I am wiped out as an attacking force.” Then he falls over, laughing.
Definitely Pythonesque, life imitating art even before it was art. There are 2 clips here because the original footage was obviously edited at least a couple of different ways. Watch them both to get the full flavour – it’s worth it just to know that the chap climbing a tree is up there so he can feed the birds.