I would say that it’s quite likely that the US knew about Hitler’s nuke program. In all of the questioning they did of Nazi scientists and officers,someonewould have mentioned it. And there would be far too much evidence in documents, prototypes, etc to keep it a ...
It would also be nice if B-29 would have one nuke what you can use just each 10-15 minutes. That would be awesome! (Sorry that this was so long)