This was SOP way back. An ARVN murdered one of my teammates. He got transfered and the investigation was quashed in the interests of allied harmony. If it had been one of us murdering one of our counterparts...Red Line Brig and 20 years at Portsmouth.
The Polish had a "rape van" at Bagram around 2009/2010. Their "punishment" was to get sent downrange to FOB Ghazni. Organized gang rapes on men and women alike and nothing happened.