Listening to Dan Carlin's Hard Core History and reading a few other sources on the Eastern Front I learned that in the later stages of WWII the Soviet Government was scraping the bottom of the barrel of able soldiers and emptied more than few prisons to boost their manpower. Once the war was over how did they deal with these convict-soldiers who had been given training and many of whom now had combat experience and possibly a taste for blood after the sacking of East Germany. Did they cause significant trouble for post-war Russia? Did they receive pardons in exchange for service?
Do you mean penal battalions (shtrafbats/shtrafniki)?
If so, I refer you to a previous comment/post in a similar vein:
The comment seems to imply that the prisoner units were used in essentially suicide missions ("human mine clearers"), and had horrifying mortality rates. So the result would most likely be a lot of dead prisoners, with very few military-trained criminals who actually survived the war.