I think I know what he’s talking about, but he has it turned the wrong way round when it comes to interwar development of doctrine and equipment - during that period, the Germans were banned from doing quite a few military activities such as developing their armored forces and air force. So, they made co-operative training and R&D sites inside the Soviet Union, as a way to get around the restrictions. If anything, it was the Germans who helped shape the professional Soviet military of the 1930s. In addition, during the 20s and 30s, the Soviets imported entire factories from the West, and set them up under foreign guidance. The Germans were, along with the United States, one of the main contributors the Russians growth as an industrial power - the Minsk Truck Plant and Uralmash heavy industrial plants were built by the Germans
http://en.wikipedia.org/wiki/Kama_tank_school
http://en.wikipedia.org/wiki/Lipetsk_fighter-pilot_school
He is right about about how the Soviets were one the main suppliers Germany had during WW2. Vast amounts of oil, gran, and other resources that the German war machine needed were exported in vast amounts by the Soviets.