Almost simultaneously with the passage of the Niemen by the three corps under the French marshals, those of Prince Eugene and the other generals also crossed, but further south, and also advanced at full speed in hopes of interposing between the three Russian armies, and of preventing their concentration. For the next week the French pressed hard upon the rear of the retreating Russians, but failed to bring on a battle, while they themselves suffered from an incessant downpour of rain which made the roads well-nigh impassable. The commissariat train broke down, and a hundred pieces of cannon and 5000 ammunition waggons had to be abandoned. The rain, and a bitterly cold wind that accompanied it, brought on an epidemic among the horses, which were forced to depend solely upon the green rye growing in the fields. Several thousands died; the troops themselves suffered so much from thirst and hunger that no less than 30,000 stragglers fell out from the ranks and spread themselves over the country, burning, ravaging, plundering, and committing terrible depredations. Such dismay was caused by their treatment that the villages were all abandoned, and the whole population retired before the advance of the French, driving their flocks and herds before them, and thus adding greatly to the difficulties of the invaders.

MAP SHOWING THE ROUTE OF NAPOLEON'S MARCH TO MOSCOW.

The greater portion of these straggling marauders belonged not to the French corps, but to the allies, who possessed none of the discipline of the French soldiery, and whose conduct throughout the campaign was largely responsible for the intense animosity excited by the invaders, and for the suffering that afterwards befell them.

As the pursuit continued even Napoleon's best soldiers were surprised at their failure to overtake the Russians. However long their marches, however well planned the operations, the Russians always out-marched and out-manœuvred them. It seemed to them almost that they were pursuing a phantom army, a will-o'-the-wisp, that eluded all their efforts to grasp it, and a fierce fight between the rear-guard of Barclay de Tolly's army and the advance-guard of Murat's cavalry, in which the latter suffered severely, was the only fight of importance, until the invaders, after marching more than half-way to Moscow, arrived at Witebsk.

Nevertheless they had suffered severely. The savage ferocity with which, in spite of repeated proclamations and orders, the invading army treated the people, had exasperated the peasantry almost to madness, and taking up arms, they cut down every straggler, annihilated small parties, attacked baggage trains, and repeated in Russia the terrible retaliation dealt by the Spanish guerillas upon their invaders.

On the right of the French advance there had been heavier fighting. There General Schwarzenberg with his 30,000 Austrians had advanced against the third Russian army, under Tormanssow. A brigade of the division under Regnier, which was by Napoleon's order marching to join Schwarzenberg, entered Kobrin, where it was surrounded by Tormanssow, and after a brave resistance of nine hours, in which it lost 2000 killed and wounded, the remainder, 2300 in number, were forced to surrender. Tormanssow then took up a strong position with his 18,000 men, and awaited the attack of the united forces of Schwarzenberg and Regnier, 38,000 strong.

The battle lasted all day, the loss on either side being between four and five thousand. Tormanssow held his position, but retired under cover of night. On the 3rd of August the armies of Barclay and Bagration at last succeeded in effecting a junction at Smolensk, and towards that town the French corps moved from various quarters, until 250,000 men were assembled near it, and on the 15th of August, Murat and Ney arrived within nine miles of the place.

Smolensk, a town of considerable size, on the Dnieper, distant 280 miles from Moscow, was surrounded by a brick wall thirty feet high and eighteen feet thick at the base, with loopholed battlements. This wall formed a semicircle of about three miles and a half, the ends resting on the river. It was strengthened by thirty towers, and at its forts was a deep dry ditch. The town was largely built of wood. There were no heavy guns upon the walls, and the city, which was completely commanded by surrounding hills, was in no way defensible, but Barclay de Tolly felt himself obliged to fight.