Simple, when they come out with their hands up and with white flags, throw out handcuffs. order them to handcuff themselves and give them exactly 60 seconds to do it. if they don't comply, terminate on the spot, nqa (no questions asked).
US troops vowed Wednesday to seize total control of Fallujah within 48 hours:
http://sify.com/news/fullstory.php?id=13608424