Russian Tactics, and sometimes lack thereof

I find it simply ridiculous that the Red Army was able to lose so many men, tanks, guns, etc. time and time again and yet STILL come back twice as hard to destroy the Wermacht by the end of the war. Their tactic of three men to a rifle was brutally effective in grinding down the Germans, but at what cost of life? They lost 22 million men in the war, and still had one of the biggest armies in the world, plenty to fight the Cold War. The Russians had their moments, like at Kursk, but for the most part their tactics should not have won them the war. I guess it just goes to show you how important a strategic base is for long drawn-out conflicts.