General von Gallwitz's plan, however, was of more ambitious scope. It was his intention, by encircling the Russians in the territory before him from both wings, to sweep clear of enemies the entire stretch of country in the Polish triangle between the Vistula and the Orczy rivers. The right wing of his troops that had come down the bank of the Vistula was to swing to the eastward in behind the Russians. German troops which had arrived at Willenberg inside of the East Prussian boundary, one of the German concentration points on the line of railroad lying behind their front, on the other hand, received orders to descend the valley of the Orczy and to come in behind the Russian right flank from the east. These troops, making a wide detour, swept past Przasnysz on the east, and swinging round to the south of the city attacked the Russians holding the place from this direction. The Germans had understood that only small Russian forces were in the city. Anticipating the German movement, however, a Russian division, as the Germans learned later, had hastened to Przasnysz. The Russians also had collected large forces on the Narew, and were hurrying them toward Przasnysz on roads covering a wide front. Two full Russian corps from this line were flung upon the German left wing. The forces of Von Gallwitz which had carried out the encircling movement from the east and south of Przasnysz now found themselves caught between two Russian armies. However, they were unwilling to relinquish the booty which they had planned to seize. A part of the German forces was disposed in a half circle as a defense against the Russians coming up from the south, and a division of reserves, February 24, stormed Przasnysz. The German Great Headquarters announced that the Germans captured 10,000 prisoners, including 57 officers, and took 36 cannon, 14 machine guns, and much war material of various sorts. However, the Russian troops were now pressing forward from the south with irresistible force. The Germans, in consequence, slowly fell back, fighting under great difficulties, and moving northward toward their defensive lines, carrying with them their prisoners and booty.