I spent a lot of time trying to work out how to run this one with whatever groups I've had, it may be one of my least favorite modules.
It's set in western Ukraine, and the separatists are a brilliant Soviet general who's gone rogue. His enclave is being attacked by a pro-NATO formation, instead of by Soviet loyalists (I never could figure out why). It's left rather open for which side the PCs can take up, things are lined up for at least 3 options.