On May, 6, 1915, the machine was set in motion by a violent bombardment. By the 8th the Austrians captured the bridgehead of Zaleszczyki; on the 9th the Russians drove them out again, capturing 500 men, 3 big guns, 1 field gun, and a number of machine guns. On May 10 the Russians took the initiative and attacked a front of about forty miles, along the entire Dniester line from west of Niczviska to Uscie Biskupic, crossed into the Bukowina and advanced to within five miles of Czernowitz from the east. A little stream and a village both named Onut are situated southwest of Uscie Biskupic. Here a detachment of Don Cossacks distinguished themselves on May 10, 1915. Advancing toward the Austrian wire entanglements in face of a terrific fusilade, they cut a passage through in front of the Austrian's fortified positions. Before the latter realized what was happening the Cossacks were on top of them, and in a few minutes a ferocious bayonet struggle had cleared out three lines of trenches. Russian cavalry poured in after them, hacking the Austrian's rear, and compelling them to evacuate the entire district. The Cossacks charged into the hurriedly retreating masses--on horse and on foot, with saber, lance, and bayonet, capturing 4,000 prisoners, a battery of machine guns, several caissons and searchlight apparati. The entire northern bank of the Dniester was in Russian possession by the night of May 10, 1915; several desperate counterattacks attempted by the Austrians on the 11th completely failed to recover the lost ground. Two days later a Russian official reported: "In this operation the Austrian units which led the offensive were repulsed near Chocimierz with heavy losses. Our artillery annihilated two entire battalions and a third surrendered. Near Horodenka the enemy gave way about seven o'clock in the evening of the same day and began a disorderly retreat. We again captured several thousand prisoners, guns, and some fifty ammunition caissons." Being a junction of six roads and a railway station on the curved line from Kolomea to Zaleszczyki, Horodenka is considered to be the most important strategic point along the Dniester-Czernowitz front. It was undoubtedly a severe blow to the Austrians.