@FrankFrank @randahl That is true. Have soldiers in modernized/western militaries engaged in war crimes before‽ Yes. But usually they try to destroy the evidence (via fire), not bury bodies in the ground where animals & living humans can find them.
Marines investigate photos from Iraq that reportedly show troops burning bodies https://www.cnn.com/2014/01/15/us/iraq-war-photos/index.html
Either way, an investigation is needed after discovering these mass graves.