which received the following destination. 1st, the corps under the command of B***, consisting of about 1,500 infantry and 100 horse, was to observe the territory upon the Russian frontier, between Jarbourg, upon the Niemen, as far as the frontier of Courland. This corps was to interrupt the transport of provisions, from the Russian territory, and also to keep a communication between the ports of the Baltic Sea, Lipawa and Polonga, so as to secure a correspondence with foreign vessels which might arrive with ammunition and other aid for Poland. The 2d corps consisted of about 2,000 infantry, under the command of P***, and Z***, and were to act between Uceamy and Dawgeliszki. There this corps of partizans was to profit by the strong positions which the nature of the country offers, among its lakes and forests. This corps was to observe the great road which leads through that country from St Petersburgh to Warsaw, and to surprise and attack all the Russian detachments which might pass that road, on their way to Poland. To act in communication with this corps, and against the garrison of Wilno, was designated a 3d corps, under the command of M***, composed of nearly 2,000 infantry and 100 cavalry. This corps made itself severely felt. A fourth small detachment, under the command of B***, of about 800 strong, acted in the department of Grodno, and occupied a part of the forest of Bialowiez. Besides these, was a detachment of 400 horse, under the command of V***. This detachment was constantly in movement, and kept open the communications between the other corps, and acted as occasion required. It was especially to attempt to surprise the enemy's artillery, which was often sent in an unprotected state. This detachment of cavalry, with the first named corps under the command of B***, attacked so sudden and vigorously the Russian corps under the command of general Szyrman, that they were forced to take refuge upon the Prussian territory at Memel. The Prussians received them, and afterwards permitted them to leave with their arms and ammunition. This was not the first nor the last example of such relief afforded to our enemy by Prussia. The insurrections of Lithuania and Samogitia, which had begun so successfully and promised to extend even to the borders of the Dnieper and the Black Sea, could not but threaten the utmost danger to the Russian forces which had entered the kingdom, and it was from this moment that the situation of the enemy became in a high degree critical, as every military judge will perceive. The danger of their position was still more to be augmented by our success in the battle of Iganie, on the 9th of April. FOOTNOTES: