For a long time, I have been told that the Red Army defeated the Wehrmacht simply by throwing bodies at them until the Wehrmacht couldn't take it anymore. I now know this is not the case, but I still want to know how exactly it happened. The German tactics in the early stages of the war against the USSR were arguably the reason for there initial success, but I do not know much about the Red Army's tactics in the early stages of the war, or towards the end. So my question is how did their tactical doctrine, and to a lesser extent operational doctrine, evolve over time? Did they simply copy the tactics of the German Army? Or did they develop completely new tactics to counter the Wehrmacht? Did the tactics stay the same, and were just poorly executed in the early war? Or did they really just throw bodies at the German Army? Thanks in advanced for any responses.