…rules that is historically accurate and even makes sense…
Ummm……there is no way that Stalin would have put his forces under the command of the US or UK, or vice versa. Remember, after the Germans surrendered a large portion of the US military wanted to keep going to Moscow. Wisely they decided not to.
As far as the factories go, they are one of the most unrealistic parts of the game. The UK builds a factory in Persia and starts cranking out armor, not to mention aircraft carriers and battleships? Not an easy task.
Not playing by these rules is essential, as SUD said. I remember using them back in the dark ages and I could beat the axis without using the US at all. Russia holds off Germany while the UK pounds Japan and then turns back west and Russia and the UK run over Germany.