On the other hand, Barclay de Tolly, anxious to unite with Bagration and reach Smolensk, abandoned the strong encampment at Drissa, leaving Wittgenstein near there to watch the enemy and cover the road to St. Petersburg. The French pursued him with great rapidity, which, though it endangered his immediate union with Bagration at Vitebsk, yet served the Russian policy of drawing the enemy into the interior. Murat continually rushed forward with his cavalry to attack the rear-guard of De Tolly; but the Russian infantry maintained steady order, and continually withdrew before him. Every evening he was close upon them; every morning he found himself again distanced. The Russians appeared in full vigour, and well supplied with everything; the French were sinking with famine and fatigue. At Polotsk the Emperor Alexander left De Tolly, and hastened on to Moscow to prepare the inhabitants for that grand catastrophe which he already foresaw, and had resolved upon. On the 14th of July, when Barclay de Tolly was close pressed by Napoleon, he learned that though Bagration had been repulsed at Mohilev, he was now advancing on Smolensk; he therefore himself again retreated before the French towards Vitebsk. At that town he had a partial engagement with the French; but he quitted it in good order. Here Murat and most of the other general officers entreated Napoleon to close the campaign for this year; but he refused. The soldiers were dispirited by this continual pursuit without result; Murat himself was heartily sick of endeavouring to get a dash at the enemy and being as constantly foiled; King Jerome had been disgraced and sent back to his Westphalian dominions, on the charge of having let Bagration escape by want of sufficient energy; and Wittgenstein had, to the great disgust of Napoleon, on the 2nd of July, crossed the river, surprised Sebastiani's vanguard of cavalry in Drissa, and completely routed them. These things had embittered Buonaparte; and if he ever intended to encamp for the winter at Vitebsk, he now abandoned the idea with indignation. It was still midsummer; the enemy had so far eluded him; he had not been able to strike one of his usual great blows and send terror before him. He was impatient of a pause. "Surrounded," says Ségur, "by disapproving countenances, and opinions contrary to his own, he was moody and irritable. All the officers of his household opposed him, some with arguments, some with entreaties, some--as Berthier--even with tears; but he exclaimed, 'Did they think he was come so far only to conquer a parcel of wretched huts? that he had enriched his generals too much; that all to which they now aspired was to follow the pleasures of the chase, and to display their splendid equipages in Paris. We must,' he said, 'advance upon Moscow, and strike a blow, in order to obtain peace, or winter-quarters and supplies.'"