My advice is 'no prisoners'. Take THAT Lawrence of Arabia.
This is a war zone, not merely a criminal enterprise.
Lawrence orders that "no prisoners" be taken when leading a charge against retreating Turkish troops at Tafas. Many of Lawrence's British military colleagues, as well as some of his biographers, stoutly denied that any such order was given - never mind that Lawrence explicitly admitted as much in both his memoir and official battlefield report. Worse was his response upon discovering that one rebel group, having missed the "no quarter" edict, had taken some 250 German and Turkish soldiers prisoner. As Lawrence recounted in his official report, "we turned our Hotchkiss [machine gun] on the prisoners and made an end of them."