[Raellus]

Going Home has several status blurbs for Soviet units listed as being located in Poland. I don't have the module in front of me but the gist of one of them is "loyal but not responding to orders from higher HQ". Others are listed simply as "not responding to higher HQ". Still others have gone rogue and are setting up shop as the local government in whatever town or village near where they happened to start the Polish winter. And, of course, you have your mutinous units that simply splinter into various marauder bands.

So, in my view, a lot of it comes down to the unit commander. It boils down to two essential questions: Is he effective enough to maintain unit morale and cohesion? And, is he loyal to the remaining Soviet hierarchy? Some of them would probably try to carve out their own little fiefdom on Polish soil. Others might simply try to get their men home. Others may continue to follow the directives of the government/military hierarchy. In many cases, mutinies or unit coups would have rendered unit commanders either spectators or corpses.

At a higher level, I think the Soviet government would try to maintain a military presence in Poland until they could be relatively certain that the German military was in no position to mount offensive operations outside of its own borders. With German non-aggression likely, the Soviets would probably recall units to put down the rebellions in its break-away western "republics".