The problem is that one complaint in these circumstances carries a great deal of clout in our sensation seeking and / or politically biased media, and as looks the case in the John Leslie affair, trial by media is the norm so you are cuffed before any hearing or trial anyway.
You won't see the **** media withdrawing their crap once the 1RI boss is cleared. I suppose you had to be there at the time but if you want evidence of war crimes, a dink on the head from a Brit is apparently far worse than gassing 5000 or so civilians and slaughtering hundreds of thousands of others. Let's not forget who the true enemy was here, Saddam and his regime. Apart from one US Major with a God complex, the US still are the only major ally we can rely on too.
By the way, the US don't have a monopoly on Blue on Blue, vide the GW1 and 2 Warrior, CVR and CR2's brought back to UK with a UK strain of 120mm HESH rash.