No, they aren’t - the difference is all about formalities; from the moral standpoint they are precisely the same. It doesn’t matter if you go killing innocent people because of religion, political interests, race, or money.
If that's true (which I doubt), the US military is fantastically bad at their job.
Low estimates of the cost of the Iraq war put it at 185k dead iraqi civilians.
I believe that it is much more likely that the US military simply doesn't care much about civilian deaths incurred whilst it seeks useless vengeance. This satisfies Occam's Razor, too.