The problem with Afghanistan during Herrick is that the 'justice' system did not work! When I was in Kandahar 10 years ago, suspect insurgents ($10-a-day-Taliban - casual fighters) were picked up in raids, handed over to the Afghan National Police, held for a day, and then released due to lack of evidence, a bribe, lack of interest or a corrupt chief of police. Then released right back into the population like a conveyor belt.
Looks like this is another witch hunt against troops who were trying to sort the (r@p system out.
Let's hope these guys don't suffer the same fate as Sgt Alex Blackman, whose conviction from a badly-run biased court-martial system was eventually quashed.