I would be more inclined to think that just maybe this animal was acting on orders from superiors and was not predisposed to abusing people who couldn't defend themselves if I hadn't read all of the testimony by his peers and wasn't aware of his civilian record, which, as I understand it, contains allegations of many of the same activities while he was a US Prison guard.
IMO This guy is lucky he got as little time as he did considering the nature of his crimes AND the incredible damage he inflicted on his fellow soldiers. I am sure there are more dead or injured because he did hat he did than there would be otherwise.
Allegations, hell...he was FIRED from one prison for doing stuff like this.