I'm pretty sure there's a Challenge Mag article about a Soviet unit operating on the CONUS east coast which is made up of POWs that escaped and were due to be ferried away by a Soviet sub, but the sub never arrived. IIR the unit has KGB or GRU with them coordinating things. I'm sorry to be so vague (I'm at work and don't have access to my Challenge Mags) but if I had to guess I reckon the article is in the first 50 issues.
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 "It is better to be feared than loved" - Nicolo Machiavelli
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