"A young child would not be very aware of the difference between murder and killing, nor would they need to be."

You know sod all about what I was taught. I was still going to church in my teens and know full well what I heard. Over the years we went to CoE, Methodist and finally an evangelical free church (which i quite liked) and at no point was the interpretation of "Thou Shalt Not Kill" ever questioned. Or in school. Ever.

Obviously for some people the fact you can't blow children and other innocents to bits is problematic when you support such action, and you'll lie to yourself to justify your own bloodlust. Nice.