I should clarify just a little, when that statement is standing on it's own merit, it does suggest that I may believe that the Allied powers were blameless in their actions, where civilian populations were concerned, which is not my intent or belief. I must insist that the statement be held in context with the entire paragraph where I have offered it as an introduction to observing that civilians and "war support" might be heavily influenced by first hand experience by those "at home".
Even my generalizations such as Allied and Axis powers is slippery slope, but it seemed the best way of describing the belligerents without resorting to good guys vs bad guys circa 1939-1945.
I may not have articulated my thoughts quite as accurately as I hoped in my original post and left things a bit ambiguous, I apologize for that bit.
You second point does hold very true, the scope of the war outside the London Blitz was something previously unseen in the history of warfare.