What an odd thread. I'm not really sure where you guys are headed. The modern world does not engage in war with a no-holds-barred mentality. You can't just march across enemy territory mowing down everyone that moves without drawing condemnation from the rest of the world. Clearly, you can not commit what are--in the international community--recognized as 'war crimes' and shrug it off by saying,"Hey, I want to win!"
Neither can you hope to completely avoid civilian casualties. Lord knows we've incurred more than enough civilian casualties in the middle east already, but that probably doesn't surprise anyone, given that we are staging military operations in urban settings over there. But, I have no idea why you guys are comparing relative levels of cruelty implicit in different types of weapons/warfare. They hate us enough to kill us in cold blood & desecrate the bodies as a dancing mob. They're not wagging fingers at us and criticizing how we are armed..
The issue (I thought) was one of hypocrisy. We say into the microphones that we aren't using chemical weapons in their streets, and then we leave scorched/melted bodies with the clothing intact. Administrative terminology aside, nobody cares if you "technically consider" a knife to be a "personal, hand-to-hand melee weapon." We look like insanely stupid jack-asses making speeches that say we are not using knives, while we leave bodies riddled with stab wounds in our wake.