Somehow I doubt someone at his level would be asked to take the stand. But one never knows. He had those grunts fired up. After all. He claimed it was really great to be killing Islmofacist terrorist. Sort of gave one a warm fuzzy feeling. But if one where to subpena him, he can bark back that he also coined the phrase, no better friend and no worse enemy.
I'm trying to put my hands on the details about a court martial during WWII. A couple of grunts in Sicily were accused of killing prisoners. Their defense was that Gen. Patton had given a speech to the regiment and said, take no prisoners. I believe the guys got off.