Platov had already evacuated Mir and drawn back towards Nesvizh. On the 10th he was attacked by Rosniecki, and a cavalry action on a large scale ensued. Rosniecki had with him six regiments--some 3300 lances and sabres, while Tyskiewicz’s brigade, about 1200 more, was at Mir. Platov and Vassilchikov had at their immediate disposal at least 2000 regular cavalry and 3000 Cossacks. Rosniecki’s first two brigades, including that of Turno, and Vassilchikov’s regulars crashed together in a furious hand-to-hand combat, with fairly equal fortune; but the third brigade coming up in support was enveloped by a cloud of Cossacks and broken. Thereupon the whole division was forced to give ground, hotly pressed by the Russian Hussars, Dragoons and Cossacks. A complete rout was only averted by the gallant advance of Tyskiewicz’s brigade, which covered the retreat and enabled the broken regiments to rally near Mir. The Russians thereupon drew off. They had suffered considerably, and two Cossack colonels had been killed. But the Poles had lost over 700 men, and it may be imagined that the morale of the Polish army was considerably shaken. On the 11th Raievski and Voronzov evacuated Nesvizh and marched some 20 miles to Romanovo, while Platov fell back on Nesvizh. On the 12th Bagration made another long march to Slutsk, while Platov followed to Romanovo. At Slutsk Bagration learned that French troops had been located at Svislocz on the Berezina, about 27 miles north of Bobruisk. The inference was that Davout was marching to anticipate him at the latter place. He sent forward Raievski at once to the threatened fortress with the 7th Corps and some cavalry and Cossacks, while the 8th waited at Slutsk for the arrival of Platov.