On the face of it, it sounds to me like he acted without malice, believing his action to be the only humane thing to be done.
Still, a courts martial may be the only way to really get the facts straight and documented. An acquittal in a courts martial would be the best thing for this soldier, since it means that the matter has been fully and fairly investigated.
It closes the matter. At least I hope that's where this is going.
Yep, me too. I agree with you.
I wasn't there. Thank the good Lord he didn't have an embed reporter along with him.