The Warlords expansion to Civilization IV adds Churchill and Stalin to the list of leaders available, helping you to recreate The War, although Italy is still represented by the Romans. You can round out the Allies with FDR running the Americans while Mao and Hirohito battle in Asia. Germany, of course, will be ruled by … … Bismarck.
Something seems to be missing here.
: Zubon
PS – Hirohito but no Tokugawa?
If you want to do so, you can get some of those leaders from http://www.civfanatics.com – along with lots of other mods for Civ4.
I will say that CivFanatics is a good site for all that sort of fun stuff.