Is the mission to kill the enemy or to torture him from long distance? Blow the guy's head off and move to the next target. No need to be ghoulish about it.
Actually I think there may well be just such a need.
The war is NOT over until either, like Carthage, all the enemy are dead, or like WWII Japan, the enemy's will to fight is broken.
1.3 billion muslims on earth.
Chose a solution.
Chose wisely.