Are all other horrors of war so eclipsed by the Holocaust that we no longer have any usable scale by which we can condemn them? Can we condemn them as much as they ought (in my view) to be condemned without being falsely accused of equating them with the Holocaust? — Peter Hitchens
Is the motivation for defending Britain's deliberate bombing of civilians that giving even an inch to those who condemn it would be seen to moderate one's uncompromising opposition to everything the Nazis did and stood for? I don't understand it otherwise. And even this motivation is difficult to understand except as a thoughtless kneejerk reaction. It seems to me that your moral authority is only enhanced by facing up to the crimes perpetrated by your own side. After all, if anything you do can be justified by "but Nazis" then you don't have much of a morality at all.
As for the idea that condemning the bombings excuses or diminishes the atrocities of the Nazis, I just find it bizarre. Note that British historians right across the political spectrum condemn the actions. Not all would label it as a war crime, but none of them, as far as I know, think that the earth-shattering horror of the Holocaust makes everything the Allies did somehow all right.
Myself, I also hesitate to label it as a war crime, partly because I'm simply uncomfortable, unlike Benkei, with a legalistic framing of such things, even if I can admit that international law has its place, given that we do live in a war-torn world. But to me, the law here would seem to me just to normalize the war, and to simplify it, to isolate specific actions that have to be understood in context, etc. Anyway, that's beside the point. The point being that killing those people was an inexcusable evil.
To condemn the targeting of innocent people, who included children, the old, and the sick--to say it was evil, as I do, is not to say that the war effort was evil, that RAF personnel were evil, or even that Harris or Churchill were evil--and it is not to draw an equivalency between the bombing and the exterminations carried out by the Nazis.
Would any Allied action have been justified? Would it have been "yeah it was bad but we were fighting the Nazis" if the Allies had, after liberation, continued to use the concentration camps and death camps, this time to murder German people in exactly the same way as the Nazis used them? People who were not in any sense responsible for the Nazis? Would you simply shout "Payback" in that case too? (As it happens, the Soviets did continue to use the camps for a while, especially for political prisoners, though not to gas people)
Peter Hitchens is an extremely unfashionable conservative but he has a lot of good stuff to say about the issue:
I get into no end of trouble for my position on this. I am told that I am unpatriotic, even now, for discussing it or for being distressed by the extreme and horrible cruelties inflicted by our bombs on innocent women and children, who could not conceivably be held responsible for Hitler’s crimes. On the contrary, I believe it is the duty of a proper patriot to criticize his country where he believes it to have done wrong.
I am told I am defaming the memory of the bomber crews. I have never done so, and never will. They had little idea of what they were doing, died terrible deaths in terrible numbers thanks to the ruthless squandering of life by their commanders, and showed immense personal courage. It is those who, knowing what was being done, ordered them into battle that I blame.
I am told that I am equating our bombing of Germany with the German mass murder of the Jews, when I would not dream of making such a comparison, never have done so and never will. I am told that I am excusing the mass murder of the Jews, when nothing could ever excuse it and I should certainly never attempt to do so. Is it still necessary to say that two wrongs do not make a right, and that one horribly wrong thing may be worse than another horribly wrong thing, and yet they may both still be horribly wrong, examined by themselves as actions? — Peter Hitchens
https://hitchensblog.mailonsunday.co.uk/2015/02/the-bombing-files-arguments-against-the-raf-bombing-of-german-civilians-summed-up.html