There are a set a rules called "The laws of armed conflict" which every person in the US military has to study and has to follow. Making a mistake in the heat of battle can sometimes be taken into exception, but murdering a 15 year old with with a hunting knife as he is about to receive medical attention , shooting civilians as they walk along a river, firing indiscriminately into a civilian community , none of those fall under those rules......If he is found guilty of these offenses it is a stain on all of us who have ever severed honorably, and if he would also be pardoned, that would go against just about everything this country stands for,