Thanks for posting the link. Answer: it's due to camaraderie. Plus understand that Red Army, and this is true certainly up to Yeltzin, viewed humans and certainly conscripts as part of a machine, a system, probably taught so by bolsheviks Their captains would command them straight into slaughter, stupidly, or deploy them knowing they would be starved. It's why casualties were so high, although it was probably closer to 9MM casualties, not 20MM..