gunnervi

I think the genre you are looking for is “immersive sims”. Notable historical examples are Thief, Deus Ex, and System Shock.

Let him who hath understanding reckon the number of the beast. For it is a human number. Its number is six hundred and sixty six

Ultimately, these sorts of crimes are incredibly common for occupying armies. Culture impacts the way these crimes are handled – are they punished, ignored, covered up, or tacitly (or even explicitly) encouraged? But the common element is soldiers, and the way that war leads to the dehumanization of the enemy, not that some cultures breed uniquely evil people.