Troops are almost irrelevant, Russia are running out of materiel. And I'm not convinced they have the power structure necessary to make a human wave approach work; this isn't 1940s USSR. Men will catch on that their guns also work on their own officers.

Not only that, an approach that doesn't have enough vehicles simply cannot work. They're limited to moving a few miles a day; how are they going to be supplied with food, let alone enough ammunition?