Welcome to FR. I have news for you. We are not at war with Iraqi civillians. The insurgents come from other countries.
Al Qaeda does not fly a flag or wear a uniform so in that regard they "are" civilians but their troops are at war with Iraqi civilians. They kill more Iraqis in their attacks than US troops.
This is not the same war as the war against Saddam's Iraq. Saddam is out of power and will not return.
We waged war in Germany for 50 years after WWII. The Cold War was fought until the Berlin Wall came down.
He's dead, too.