But the army of Italy, the Bavarian army, the 1st corps and the guard, very soon occupied and surrounded Wilna. There it was that, stretched out over his maps (which he was obliged to examine in that manner, on account of his short sight, which he shared with Alexander the Great and Frederic the Second), Napoleon followed the course of the Russian army; it was divided into two unequal masses: one with its emperor towards Drissa, the other with Bagration, who was still in the direction of Myr.
Eighty leagues in front of Wilna, the Düna and the Boristhenes separate Lithuania from old Russia. At first, these two rivers run parallel to each other from east to west, leaving between them an interval of about twenty-five leagues of an unequal, woody, and marshy soil. They arrive in that manner from the interior of Russia, on its frontiers; at this point, at the same time, and as if in concert, they turn off; the one abruptly at Orcha towards the south; the other, near Witepsk, towards the north-west. It is in that new direction that their course traces the frontiers of Lithuania and old Russia.
The narrow space which these two rivers leave between them before taking this opposite direction seems to constitute the entrance, and as it were the gates of Muscovy. It is the focus of the roads which lead to the two capitals of that empire.
Napoleon's whole attention was directed to that point. By the retreat of Alexander upon Drissa, he foresaw that which Bagration would attempt to make from Grodno towards Witepsk, through Osmiana, Minsk, and Docktzitzy, or by Borizof; he determined to prevent it, and instantly pushed forward Davoust towards Minsk, between these two hostile bodies, with two divisions of infantry, the cuirassiers of Valence, and several brigades of light cavalry.
On his right, the king of Westphalia was to drive Bagration on Davoust, who would cut off his communication with Alexander, make him surrender, and get possession of the course of the Boristhenes; on his left, Murat, Oudinot, and Ney, already before Drissa, were directed to keep Barclay and his emperor in their front; he himself with the élite of his army, the army of Italy, the Bavarian army, and three divisions detached from Davoust, was to march upon Witepsk between Davoust and Murat, ready to join one or the other of them; in this manner penetrating and interposing between the two hostile armies, forcing himself between them and beyond them; finally, keeping them separate, not only by that central position, but by the uncertainty which it would create in Alexander as to which of his two capitals it would be requisite for him to defend. Circumstances would decide the rest.
Such was Napoleon's plan on the 10th of July at Wilna; it was written in this form on that very day under his dictation, and corrected by his own hand, for one of his chiefs, the individual who was most concerned in its execution. Immediately, the movement, which was already begun, became general.
CHAP. VI.
The king of Westphalia then went along the Niemen at Grodno, with a view to repass it at Bielitza, to overpower the right of Bagration, put it to the rout, and pursue it.
This Saxon, Westphalian, and Polish army had in front of it a general and a country both difficult to conquer. It fell to its lot to invade the elevated plain of Lithuania: there are the sources of the rivers which empty their waters into the Black and Baltic seas. But the soil there is slow in determining their inclination and their current, so that the waters stagnate and overflow the country to a great extent. Some narrow causeways had been thrown over those woody and marshy plains; they formed there long defiles, which Bagration was easily enabled to defend against the king of Westphalia. The latter attacked him carelessly; his advanced guard only three times encountered the enemy, at Nowogrodeck, at Myr, and at Romanof. The first rencontre was entirely to the advantage of the Russians; in the two others, Latour-Maubourg remained master of a sanguinary and contested field of battle.