The cause of this action, which it would have been most desirable to have avoided, was a strong attack by the enemy upon the rear-guard of general Chlapowski which was marching on the road to Szawla. To avoid exposing the rear-guard to a great loss, or even to the chance of it, the command was given, to take position, and the corps was placed in order of battle. The battle of Rosseyny, which lasted scarcely four hours, was very sanguinary, and highly honorable to the Polish arms. The object of the enemy on this occasion was to surround our left wing. As soon as he perceived that our corps had taken position and was arranged in order of battle, the enemy brought forward his artillery, consisting of 24 pieces of cannon, and commenced a heavy fire upon our centre. This fire did not cause a great loss, for, our position being elevated, the shot struck too low to be effective. A few moments after this fire of artillery was commenced, a strong column of Russian cavalry showed itself on our right wing. This column had with it a body of light artillery, which commenced fire also. On our left wing, which was supported upon a marsh, and, for that reason, in little expectation of an attack, but a small force was collected. This wing was composed of a battalion of infantry and the 1st regiment of lancers. These troops had been placed on this wing to repose from the combats and fatigues of the day and night preceding, in which they had acted as rear-guard. The brave lancers, however, at the first sight of the enemy, demanded of the general to be permitted to make a charge. This permission being given, at the first discharge of the Russian artillery, our soldiers threw themselves with impetuosity upon both the cavalry and the artillery of the enemy. The capture of sixty prisoners and the spiking of three cannon were the fruits of this brilliant attack. It was the last charge of that brave regiment. Our centre was not less fortunate than our left wing. Our artillery being better placed than that of the enemy, several of his pieces were dismounted, and his fire began to slacken. For some hours a light fire of tirailleurs was continued on both sides, when our generals, seeing that the enemy did not renew the attack, gave orders to evacuate the position, and to resume the march for Szawla.