Pictures!?!?
These soldiers didn't get in trouble because of the things they did to prisoners. Its a war. I'm sure way worse things went on across the country.
They got in trouble because they took photos of the things they did. How can two sargeants who are older than the younger soldiers let this happen. People do messed up things in war, that's a given, and to an extent acceptable, but to photograph it.
I think they all focused on the wrong thing. The girl at the end said there was nothing she could have done different. Don't go in the photographs! There was a whole company in that prison. What about all the other soldiers. They obviously weren't involved. There are always a few bad apples in every job/army/organization. Unfortunately for the younger soldiers, they got caught up with the wrong crowd. They learned that lesson the hard way.