Nevertheless, Peter Wittgenstein’s role was also crucial. Aided by Count Steinhel, he was to advance southwards, take Polotsk, and drive the defeated corps of Oudinot and Saint-Cyr north-westwards into Lithuania and away from Napoleon’s line of retreat across Belorussia. As a result, the combined forces of Chichagov and Wittgenstein would control the whole area through which Napoleon’s main army would have to retreat, with Kutuzov’s forces in close pursuit. The enemy was already ‘exhausted’, having been drawn deep into Russia and having suffered heavy losses. It now faced still heavier losses and a very difficult retreat. If the plan was properly executed, ‘not even the smallest part of the main enemy army…can escape over our borders without defeat and ultimately total annihilation’.2
The key figure behind the plan was Alexander himself, though no doubt he discussed it with young Colonel Chernyshev and other more senior military figures in his entourage, including Petr Mikhailovich Volkonsky. To some extent this new plan inherited aspects of pre-war thinking about military operations. Drawn forward deep into Russia and then blocked by the main Russian army, Napoleon was to be defeated by other Russian armies thrusting far into his flanks and rear. In broad outline Alexander’s plan made sense and was the best way to deploy Russian forces in this theatre of operations and exploit Napoleon’s mistakes.
The emperor’s plan was, however, very ambitious. A number of armies initially hundreds of kilometres apart were expected to coordinate their operations and arrive simultaneously in central Belorussia. Communications between these armies would be difficult. To the mud, snow and cold which impeded all movements in a Russian autumn and winter one needed to add the fact that Wittgenstein and Chichagov were separated by a swath of land in which no less than five full enemy corps and a number of smaller detachments were operating. At the very moment when Alexander was sending Chernyshev to Kutuzov, an additional 36,000 French reinforcements under Marshal Victor were entering Belorussia from the west. They reached Minsk on 15 September and Smolensk twelve days later.
Alexander’s plan assumed that his armies would defeat all these enemy forces and drive them out of Belorussia, though at the time he was concocting his plan the Russians were not yet numerically superior to their foes. Advancing into Belorussia in the middle of winter the Russian columns would certainly suffer heavy losses from sickness and exhaustion. Alexander instructed Wittgenstein and Chichagov to fortify the defiles and obstacles through which Napoleon’s army would have to retreat, but would they have the time or the manpower to do this? As the emperor himself acknowledged, the enemy could head for Minsk or Vilna and had the choice of at least three highways down which to make his escape. In the event, Alexander’s plan about two-thirds succeeded, which was more than one might have expected in the circumstances. In the second half of November, however, as Napoleon approached the river Berezina it appeared briefly as if the plan might succeed completely and might result in the total destruction of the French army and even in the capture of Napoleon himself. Because this did not happen, Russian accounts of the autumn campaign have always tended to combine triumph at the French debacle with regret that it was not even more complete.
Chernyshev himself had to do a big detour to the east of Moscow before finally reaching Kutuzov’s headquarters south of the city on 20 September. There he had discussions with Kutuzov and Bennigsen which showed his intimate knowledge of Alexander’s thinking and filled in many of the gaps in the emperor’s written proposals. On 22 September Chernyshev reported to Alexander that he had shown the necessary tact in urging the emperor’s ideas on the commander-in-chief and that both Kutuzov and Bennigsen had warmly endorsed the plan. He added that the fall of Moscow had not fundamentally changed ‘the enemy’s poor situation’ and that Napoleon would not be able to sustain himself in the Moscow region for long. There was every chance of destroying him ‘so long as the people here don’t again make serious mistakes before our armies have united in his rear’.3