And you can be a Protestant too.
The Catholic Church condemns this definitively in Gaudium et Spes,(Constitution on the Church in the Modern World) Para 80:
"With these truths in mind, this most holy synod makes its own the condemnations of total war already pronounced by recent popes, and issues the following declaration:
"Any act of war aimed indiscriminately at the destruction of entire cities of extensive areas along with their population is a crime against God and man himself. It merits unequivocal and unhesitating condemnation."
It didn't destroy Mitsubishi nor the entire city along with its population, nor was it capable of doing so, nor was that its intention; it's aim was to convince the Japanese to end the war and save a great deal more innocent and combatant lives. And it accomplished its aim, for both American AND Japanese.
Would you include Tokyo and a hundred other firebombed cities in this as well?
And how do you think the church would answer my question posed above. The Church also has a just war doctrine and I think my answer fits more closely with it as well.
I would trust my church to act in the world in the most moral manner given the real circumstances and choices available.
I still think I'm right, the Church would choose right.
And, if you disagree, perhaps you can be a Protestant too?