I heard a couple of retired generals on CNN refer to Baghdad as a "potential bloodbath" if Iraqi forces do not surrender.
That said, the people of Baghada have some of the most potent "Saddam Indocrination". They could be a bunch of "dead enders" to use some military jargon. That is the danger of a bloodbath.
Of course the bombing campaign of terror and fear....I mean shock and awe...( synonyms?)

could just cause most all of them to surrender, but that has yet to materialize.
I wonder how much public and political opinions towards the war will sway in the face of extreme coalition casualties. I wonder how much extreme Iraqi casulties would effect those opinions as well.
That said, a "low" number of casualties would not change my opinion that this war is unneccessary.