The Russians did not make that effort because they were not attacking the French. At the beginning of the battle they stood blocking the way to Moscow and they still did so at the end of the battle as at the beginning. But even had the aim of the Russians been to drive the French from their positions, they could not have made this last effort, for all the Russian troops had been broken up, there was no part of the Russian army that had not suffered in the battle, and though still holding their positions they had lost one half of their army.