The fugitive army was, after this fearful day, relieved, but the temperature again fell to twenty-seven degrees below zero, and the stoutest hearts and frames sank. On the 5th of December, Napoleon, placing himself in a sledge, hurried in advance of his army, nay, preceded the news of his disaster, in order at all events to insure his personal safety and to pass through Germany before measures could be taken for his capture.[21] His fugitive army shortly afterward reached Wilna, but was too exhausted to maintain that position. Enormous magazines, several prisoners, and the rest of the booty, besides six million francs in silver money, fell here into the hands of the Russians. Part of the fugitives escaped to Dantzig, but few crossed the Oder; the Saxons under Reynier were routed and dispersed in a last engagement at Calisch; Poniatowsky and the Poles retired to Cracow on the Austrian frontier, as it were, protected by Schwarzenberg, who remained unassailed by the Russians, and whose neutrality was, not long afterward, formally recognized. The Prussians, who had been, meanwhile, occupied with the unsuccessful siege of Riga, and who, like the Austrians, had comparatively husbanded their strength,[22] were now the only hope of the fugitive French. The troops under Macdonald, accordingly, received orders to cover the retreat of the grand army, but York, instead of obeying, concluded a neutral treaty with the Russians commanded by Diebitsch of Silesia and remained stationary in Eastern Prussia. The king of Prussia, at that time still at Berlin and in the power of the French, publicly[23] disapproved of the step taken by his general,[24] who was, on the evacuation of Berlin by the French, as publicly rewarded. The immense army of the conqueror of the world was totally annihilated. Of those who entered Moscow scarcely twenty thousand, of the half million of men who crossed the Russian frontier but eighty thousand, returned. [Footnote 1: Vide Bignon.] [Footnote 2: From a letter of Count Minister in Hormayr's Sketches of Life, it appears that Russia still cherished the hope of great concessions being made by Napoleon in order to avoid war and was therefore still reserved in her relations with England and the Prussian patriots.] [Footnote 3: French troops garrisoned German fortresses and perpetually passed along the principal roads, which were for that purpose essentially improved by Napoleon. In 1810, a great part of the town of Eisenach was destroyed by the bursting of some French powder-carts that were carelessly brought through, and by which great numbers of people were killed.] [Footnote 4: Who was far surpassed in splendor by her stepdaughter of France.]