Napoleon himself stayed in Smolensk until the 14th. The last unit to leave was Ney’s IIIrd Corps on the 17th. According to author George F. Nafziger, of the 100,000 men who had left Moscow in October, only about 41,500 remained. The Imperial Guard was 14,000 of this number. Eugène’s IVth Corps had 5,000 left while Davout’s Ist Corps had 10,000. The V and VIII Corps (Poles and Westphalians) were merged and totaled 1,500. The Minard map puts the total reaching Smolensk at 37,000, Ségur at 36,000.
Philippe-Paul de Ségur, Napoleon’s aide-de-camp, describes how Napoleon “… had counted on finding fifteen days’ provisions and forage for an army of a hundred thousand men; there was not more than half that quantity of rice, flour, and spirits, and no meat at all. We heard him shouting in great fury at one of the men who had been entrusted with the responsibility of providing those supplies. This commissary, it is said, saved his life only by crawling on his knees at Napoleon’s feet. The reasons he gave probably did more for him than his supplications.”
The man explained “When I reached Smolensk, the bands of deserters the army had left behind in its advance on Moscow had already invested the city with horror and destruction. Men were dying there as they had died on the road. When we had succeeded in establishing some sort of order, the Jews were the first to furnish some provisions. Some Lithuanian noblemen followed their example, inspired perhaps by a nobler motive. Then the long convoys of supplies collected in Germany began to appear… Several hundred head of German and Italian cattle were driven in at the same time.”
“A horrible, death-dealing stench from the piles of corpses … was poisoning the air. The dead were killing the living. The civil employees and many of the soldiers were stricken, some of them to all appearances becoming idiots, weeping or fixing their hollow eyes steadily on the ground. There were some whose hair stiffened, stood on end, all twisted into strings; then, in the midst of a torrent of blasphemy, or even more ghastly laughter, they dropped dead.”
The cattle were slaughtered “…. immediately. These beasts would neither eat nor walk…. several convoys were intercepted, some supply depots taken, and a drove of eight hundred oxen were recently seized at Krasnoye.”
In short, the reserves were gone, drawn down by other units that had spent time in the city. Other provisions had been sent east to meet the army as it retreated. Napoleon’s plans for spending the winter in Smolensk, if that was his intention, were gone.
Napoleon’s Invasion of Russia, George F. Nafziger, p 305
Napoleon’s Russian Campaign, Philippe-Paul de Ségur, p 184 – 185