Soviet Divisions Defecting to NATO

[HorseSoldier]

Sounds like an interesting situation to dump PCs into the middle of.

You might want to give White Eagle, Red Star a read for inspiration and texture for the setting. It's about the 1919-20 war Poland fought against the Red Army, a lot of which took place in Ukrainian territory (and which also involved several factions besides just the Poles and Soviets, since the Russian Civil War was still going on at the same time).