A BODY OF PRUSSIANS MAKE AN INCURSION INTO POLAND.

While both armies remained in this position, the duke de Broglio received the staff as mareschal of France, and made an attempt to beat up the quarters of the allies. Having called in all his detachments, he marched up to them on the twenty-fifth day of December; but found them so well disposed to give him a warm reception, that he thought proper to lay aside his design, and nothing but a mutual cannonade ensued; then he returned to his former quarters. From. Kleinlinnes the allied army removed to Corsdoff, where they were cantoned till the beginning of January, when they fell back as far as Marburg, where prince Ferdinand established his head-quarters. The enemy had by this time retrieved their superiority, in consequence of the hereditary prince being detached with fifteen thousand men to join the king of Prussia at Fribourge, in Saxony. Thus, by the victory at Minden, the dominions of Hanover and Brunswick were preserved, and the enemy obliged to evacuate that part of Westphalia. Perhaps they might have been driven to the other side of the Ehine, had not the general of the allies been obliged to weaken his army for the support of the Prussian monarch, who had met with divers disasters in the course of this campaign. It was not to any relaxation or abatement of his usual vigilance and activity, that this warlike prince owed the several checks he received. Even in the middle of winter, his troops under general Manteuffel acted with great spirit against the Swedes in Pomerania. They made themselves masters of Damgarten, and several other places which the Swedes had garrisoned; and the frost setting in, those who were quartered in the isle of Useclom passed over the ice to Wolgast, which they reduced without much difficulty. They undertook the sieges of Demmen and Anclam at the same time; and the garrisons of both surrendered themselves prisoners of war, to the number of two thousand seven hundred men, including officers. In Demmen they found four-and-twenty pieces of cannon, with a large quantity of ammunition. In Anclam there was a considerable magazine, with six-and-thirty cannon, mortars, and howitzers. A large detachment under general Knobloch surprised Erfurth, and raised considerable contributions at Gotha, Isenach, and Fulda; from whence also they conveyed all the forage and provisions to Saxe-Naumberg. In the latter end of February, the Prussian major-general Wobersnow marched with a strong body of troops from Glogau in Silesia, to Poland; and, advancing by way of Lissa, attacked the castle of the prince Sulkowski, a Polish grandee, who had been very active against the interest of the Prussian monarch. After some resistance he was obliged to surrender at discretion, and was sent prisoner with his whole garrison to Silesia. From hence Wobersnow proceeded to Posna, where he made himself master of a considerable magazine, guarded by two thousand cossacks, who retired at his approach; and having destroyed several others, returned to Silesia. In April, the fort of Penamunde, in Pomerania, was surrendered to Manteuffel; and about the same time a detachment of Prussian troops bombarded Schwerin, the capital of Mecklenburgh. Meanwhile reinforcements were sent to the Russian army in Poland, which in April began to assemble upon the Vistula. The court of Petersburgh had likewise begun to equip a large fleet, by means of which the army might be supplied with military stores and provisions; but this armament was retarded by an accidental fire at Revel, which destroyed all the magazines and materials for ship-building to an immense value.