A military coup needs a sacrifice and courage that you can't find in an army without morale.
My dad sacrificed many things in life for me. He abandoned a very promising and lucrative career of an army officer just so that he could continue helping me with my chess and accompanying me to tournaments.
Week after week, the heads of Red Army Intelligence received updates on the Wehrmacht's preparations.
Great achievement is usually born of great sacrifice, and is never the result of selfishness.