The fire bombing of tokio was the only alternative to lamay's long summer of burning down the cities of japan with na pom. The military historian conrad krane says, we would have surrendered eventually anyway. But he said, the impact of the mass ov fire bombing campaign atomic bombs was that we surrendered in august,. No fire bombs and no atomic bombs. If they don't surrender, the soviets invade, and then the americans invade, and Japans gets carved up like germany and Korean peninsula were.