By June 5, 1916, this number had increased to 480 officers, 25,000 men, twenty-seven guns and fifty machine guns. The battle on the northeast front continued on the whole front of 218 miles with undiminished stubbornness. North of Okna, the Austrians had, after stiff and fluctuating battles, to withdraw their shattered first positions to the line prepared three miles to the south. Near Jarlowiec, on the lower Strypa, the Russians attacked after artillery preparation. They were repulsed at some places by hand fighting. At the same time a strong Russian attack west of Trembowla (south of Tarnopol) broke down under Austrian fire. West-northwest of Tarnopol there was bitter fighting. Near Sopanow (southeast of Dubno) there were numerous attacks by the enemy. Between Mlynow, on the Ikva, and the regions northwest of Olyka, the Russians were continually becoming stronger, and the most bitter kind of fighting developed. Especially heavy fighting developed in the region before Lutsk. There the pressure from the Russian army of General Brussilov had become so strong that the Austrians had found it necessary by June 6, 1916, to withdraw their forces to the plain of Lutsk, just to the east of that fortress and of the river Styr. This represented a gain of at least twenty miles made in two days. The official Russian statement of that day claimed that during the same period General Brussilov's armies had captured 900 officers, more than 40,000 rank and file, seventy-seven guns, 134 machine guns and forty-nine trench mortars, and, in addition, searchlights, telephone, field kitchens, a large quantity of arms and war material, and great reserves of ammunition. On the other hand, the Austrians were still offering a determined resistance at most points south and north of Lutsk, and Russian attacks were repulsed with sanguinary losses at many places, as for instance at Rafalowka, on the lower Styr, near Berestiany, on the Corzin Brook, near Saponow, on the upper Strypa, near Jazlovice, on the Dniester, and on the Bessarabian frontier. Northwest of Tarnopol were repulsed two attacks. At another point seven attacks were repulsed. The Russians also suffered heavy losses in the plains of Okna (north of the Bessarabian frontier) and at Debronoutz, where there were bitter hand-to-hand engagements. [Illustration: The Russian Offensive from Pinsk to Dubno.]