You could say soviets did all the WW2 heavy lifting, starting with https://en.wikipedia.org/wiki/Kama_tank_school https://en.wikipedia.org/wiki/Kama_tank_schoo

You could say soviets did all the WW2 heavy lifting, starting with https://en.wikipedia.org/wiki/Kama_tank_school https://en.wikipedia.org/wiki/Kama_tank_school https://en.wikipedia.org/wiki/Lipetsk_fighter-pilot_school https://en.wikipedia.org/wiki/Lipetsk_fighter-pilot_school https://en.wikipedia.org/wiki/Tomka_gas_test_site https://en.wikipedia.org/wiki/Tomka_gas_test_site and and culminating in https://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pact https://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pac...