I’ve already covered the cryptologic failures of the United States and Britain in WWII but I still haven’t covered the Soviet Union. According to Soviet/Russian sources their codes were impenetrable and the Germans were never able to compromise their high level communications links. Is that true?
still researching this case and I haven’t copied all the available documents.
Once I do I will write a detailed essay on Soviet codes.
For now here
is a sneak peak: