This kind of thing, mutilating dead bodies, is pretty much standard procedure in that part of the world, especially for Muslim irregulars. It occurs much more often than not if an opportunity exists. What happened to our soldiers would depend a great deal on how soon the Iraqi regular army, as opposed to the so-called fedayeen, gained custody of the bodies. The regulars have a different tradition, and would fear American reprisals, while the fedayeen seek death at infidel hands.
Obviously, this barbarism has been common in every part of the world since prehistoric times but the Islamo-fascists seem have a peculiar fixation on it. We have often seen this in Israel, where PA supporters go so far as to mutilate their own dead in a kind of frenzy. They have been filmed after Israeli air attacks digging out the body parts of the their own dead, waving them around in the air, and carrying them away as souvenirs or keepsakes, or relics----I am not sure what to call it, frankly, and I am not sure that I want to know.
In Arab thinking, the mutilation of dead enemies is supposed to intimidate surviving enemies. In western thinking, it is more likely to infuriate. The Hizbollah terror entity, darling of Europe's Fourth Reich media (Guardian, etc.), has erected a billboard on the Israel-Lebanon border, facing into Israel. It shows dead and mutilated Israelis, including murdered prisoners and a severed head with the face clearly recognizable. The text taunts Israelis with the words, "Your soldiers are still in Lebanon." Don't believe that human beings are capable of this depravity? See for yourself, but take a strong stomach.
Why don't the Israelis go a few feet over the border and blast this disgusting sign to splinters, along with its minders and any other Hezbollah devils they can catch? One reason could be that the sign stands within a few yards of a UN compound on the Lebanon side. Go figure.