If you kill enough of them, they stop fighting.
Killing Japanese didn't bother me very much at that time... I suppose if I had lost the war, I would have been tried as a war criminal.... Every soldier thinks something of the moral aspects of what he is doing. But all war is immoral and if you let that bother you, you're not a good soldier.
As far as casualties were concerned I think there were more casualties in the first attack on Tokyo with incendiaries than there were with the first use of the atomic bomb on Hiroshima. The fact that it's done instantaneously, maybe that's more humane than incendiary attacks, if you can call any war act humane. I don't, particularly, so to me there wasn't much difference. A weapon is a weapon and it really doesn't make much difference how you kill a man. If you have to kill him, well, that's the evil to start with and how you do it becomes pretty secondary. I think your choice should be which weapon is the most efficient and most likely to get the whole mess over with as early as possible.
If you are going to use military force, then you ought to use overwhelming military force. Use too much and deliberately use too much... You'll save lives, not only your own, but the enemy's too.
I had blood upon my hands as I did this, but not because I preferred to bathe in blood. It was because I was part of a primitive world where men still had to kill in order to avoid being killed, or in order to avoid having their beloved Nation stricken and emasculated.