"Hey cannibal soldier! Don't eat your comrades!"

"I promise not to eat any of the alive ones sir!'

"Good enough."

Why do you think they knew beforehand?

Did he wear a "cannibal and proud" shirt?

It's probably not. This sort of propaganda has been used by militaries throughout history to dehumanize the enemy.

We-ell, I've seen it in a Russian TG chat. IIRC the conversation implies two soldiers deserted, were in a house in the middle of nowhere, one killed another, ate him for a couple of weeks, then died. Then their, eh, brothers in arms found that place.

Yup. But might as well be true. C'mon, they take soldiers from prisons, what could go wrong?

Probably russian comrade meat has a bit of cigarette and vodka flavour. I'll have to admit that's not my ideal flavour profile.