Justice as a Cultural Value

Four American soldiers are facing the death penalty for murder, by military tribunal. The case against them is a little strange, as they were participating in an official raid, but it sounds like the soldiers were supposed to take prisoners, as opposed to killing their captives - even though the captives were clearly identified as enemies. Regardless, if they are found guilty and punished accordingly, could anyone come up with a story of Al-Qaida, Hezbollah, Hamas, or other religious Jihadis prosecuting their own this way to make sure they do not compromise their own rules of engagement? I think not. I think that the Jihadis don't discriminate.