Originally Posted by
NAROBS
If, as hostile occupiers, they go as far as the Nazis, they will have a steadily incrementing list of measures they can take to wreak retribution and for effecting "Pour discouragee les autres" on the Ukranians resistance - ranging from severely restricting the operations of business (Particularly food and clothing) and transport and communications, restricting medical services to the occupier provision only, taking an economic tythe, threats to the families of known resistance workers, turning-off the utilities, individual arrests, mass arrests, straight imprisonment, deportations to Gulags in Siberia, individual executions, mass executions, wiping human settlements off the map (Lidice and Oradour), contaminating land so it can't be re-occupied, with anti-personal devices, bio or chem agents.
And, Russian Security forces would be operating in the same way as the Gestapo, infiltrating and undermining resistance organisations.
For all that you will need a much firmer Grip than you will achieve with 50.000 Troops, You will need MUCH more for that. Permanently.