On the 8th of March, 1915, General von Gallwitz again tried an offensive with fresh forces which he had gathered. It was thwarted, however, on the 12th, to the north of Przasnysz. The Germans estimated the Russian forces which here were brought, up for the counterattack at some ten army corps and seven cavalry divisions. The Russians in advancing this time, instead of directing their thrust at Mlawa, pushed northeastward of Przasnysz along the rivers Orczy and Omulew. In this sector the Germans counted from the 13th to the 23d of March forty-six serious assaults, twenty-five in the daytime and twenty-one at night. With special fury the battles raged in the neighborhood of Jednorozez. This attempt to break into Prussia was also unsuccessful, and in the last week of March the Russian attacks slackened, quiet ensuing for the weeks following Easter. For six weeks the armies had struggled back and forth in this bloody angle, fighting in cold and wet, amid snow and icy rains. The Germans asserted that in these six weeks the troops of General von Gallwitz had captured 43,000 Russians and slain some 25,000. They estimated the total losses of the enemy in this sector during the period at 100,000. Countless graves scattered about the land, and the ruins of cities and villages were left to keep awake the memory of some of the fiercest fighting of the war in the east. CHAPTER LII FIGHTING BEFORE THE NIEMEN AND BOBR--BOMBARDMENT OF OSSOWETZ The winter battles of the Mazurian Lakes had forced the armies at the northern end of the Russian right flank back into their great fortresses Kovno and Grodno, and behind the line of the Niemen and the Bobr. A great forest region lies to the east and north of Grodno, and between the Niemen and the cities of Augustowo and Suwalki which the Germans, after their successful offensive, used as bases for their operations. A strip of country including these forests, and running parallel to the Niemen was a sort of no-man's land in the spring of 1915. Movements of troops in the heavily wooded country were difficult to observe, and the conditions lent themselves to surprise attacks. This resulted in a warfare of alternate thrusts by Russians and Germans aimed now at this point, now at that, in the disputed territory. Several actions during the spring stand out beyond the rest in importance, both because of the numbers engaged and their effects. In what follows will be described a typical offensive movement in this district undertaken by the Russians, and the way it was met by the Germans.