Without let-up the Russians continued to hammer away at the Austro-German lines on the Graberka and Sereth Rivers. On August 6, 1916, the Russian troops captured some more strongly fortified positions in the vicinity of the villages of Zvyjin, Kostiniec, and Reniuv. This region abounds with woods, and lends itself therefore easily to the most determined defense. This resulted again in very fierce bayonet encounters. The Austro-German forces attempted to stop the Russian advance and launched a long series of very energetic counterattacks, especially in the region of the river Koropiec. All of these, however, were in vain. They were repulsed and resulted in considerable losses. According to their official statement, the Russians made about 8,500 prisoners in the Sereth sector on August 5 and 6, 1916, captured four cannon, nineteen machine guns, eleven trench mortars, a large number of mine throwers and much war material of all kinds. The amount of ground captured by August 7, 1916, was claimed to have reached the considerable total of sixty-one and one-half square miles. Closer and closer the Russians were getting to their immediate objective, Stanislau. On August 7, 1916, strong Russian forces attacked along a front of about fifteen miles on a line between Tlumach and Ottynia and succeeded in forcing back the Austro-Germans along this entire front. They forced their way into the town of Nizniow (about fifteen miles northeast of Stanislau), which was captured, as also were the villages of Bratychuv, Palakhiche, Nodworna, Charnolocza, Krovotula, Nove, and the small town of Ottynia, and finally the town of Ilumach itself. In spite of the gradual retirement of the Austro-Germans they maintained their counterattacks, which, however, were not successful. By April 8, 1916, they had been forced to take their line back to the west of Nizinoff-Tysmienitsa-Ottynia, or within a few miles east of Stanislau. The Russians on that day crossed the Koropiec, drove their opponents out of their fortified positions, and themselves occupied the left bank up to the point of its juncture with the Dniester. Late on the same day the town of Tysmienitsa was taken as well as a ridge of heights to the northeast as far as the right bank of the Dniester. The fall of Stanislau now had become only a matter of days. Throughout the next two days, August 9 and 10, 1916, the battle for the possession of Stanislau continued to rage incessantly. One after another the Russians overcame all the obstacles in their way. River after river was crossed, trench after trench was stormed, and village after village was captured. At last, about 8 o'clock in the evening of August 10, 1916, the Russians under General Lechitsky entered Stanislau from where the Austro-German troops had previously retired in good order in a northerly direction against Halicz.