Question

Why would American troops be so relieved to hear that the Americans had dropped the atomic bomb on Japan?

Answer 1

That would mean that the war would end quickly with the invention of such a powerful weapon.

Answer 2

I believe the Americans would be relieved, because the Japanese dropped a bomb on Pearl Harbor , killing americans on the boat, which was a sneak attack by the Japanese. So, by being able to return a bomb that was dropped on the Americans and doing the same back for loved ones lost. Would make americans feel relieved.