Attack may signal the end of accepting surrenders. This and other actions (faking surrenders, executing POWs, etc) is going to get a hell of a lot more Iraqis killed than would otherwise die.
As an NCO, I would never order or permit my soldiers to commit war crimes. I would, however, make it clear in their minds that their safety and that of their troops depended on erring on the side of caution and that 1000 dead Iraqis was better than 1 dead GI.
1SG, USA(Ret)
Desert Storm