All they need to do is adapt existing munitions.
The sheer amount of munitions bunkers that went unguarded during the advance on Baghad makes it only neccesary for them to transport a few (thousands?) of the tons of unaccounted-for and abandoned explosives (and, presumably, appropriated, *we* certainly don't have them) to a spot and set them off. Gives a battlefield-level of destruction, in a city. A hummer isn't any protection against that kind of power, even with armor.
If we bring in tanks for civilian control, I think I might need to call a Godwin on our policy.