Why not go back to where it all began? Poland 1939 and then France...
Ouch - no american troops there, bad for sales. Then I'll have to opt for a full blown WWIII in Europe in 1991 after the Soviet generals got tired of the perestrojka...
After that, back to the historical reality and the big tank battles with real tanks... East front.
After that, Normandy->Berlin.
/Mazex