From: Nepean, Ontario
You could do this now using the manual PBEM system, which is just sending save files around.
Say you want 3 German players and 3 Russian, one for each front on each side.
Germans pick who is going to be overall leader and he starts making decisions and moves/fights with one front. Saves the game and send to 2nd German.
2nd German plays and send to 3rd who then plays, ends the turn then send to the Russian leader. Rinse & repeat.
Pretty easy to do.
Life is not a journey to the grave with the intention of arriving safely in a pretty & well preserved body,
but rather to skid in broadside, totally worn out & proclaiming "WOW, what a ride!"