Ministry of Railways (Soviet Union)
The Ministry of Railways (Russian: Министерство путей сообщения (МПС) Российской империи/СССР/РФ or Народный комиссариат путей сообщения (НКПС), more correctly translated as Ministry/People's Commisariat of Transportation) oversaw Soviet Railways, which operated the railways of the Soviet Union. It was divided into 32 agencies, which among them had millions of employees.
Source: Wikipedia — Ministry of Railways (Soviet Union) (CC BY-SA 4.0)