Other than the logistics of it, what is wrong with my idea? We were preparing to move the bulk of our European, China, mainland and Burma armies to Okinawa to invade Japan until Truman dropped the bombs. Pretty much just the reverse of my proposal.
“Other than the logistics of it, what is wrong with my idea?”
Try telling the guys who survived Okinawa and Iwo and Peleliu that you have decided to have them go refight Stalingrad to help save Germany from Russia.
There would have been a mutiny. There nearly was in Europe as they began discussing moving forces to the pacific. The common thinking was “we won our battle, they can finish theirs”.
It would not have been tolerated.