In the zone east of Goritz Austrian counterattacks, directed particularly against the summit of Height 174 and to the east of the Vertoibizza Torrent, broke down under Italian fire. Afterward Italian infantry, assuming a counteroffensive, occupied the important height to the south of Grazigna after a desperate conflict.
On the Carso Plateau the Austrians, with the evident object of lessening the Italian pressure in the region of Goritz, attempted a powerful effort against positions at Monte Vuocgnacco and Monte Faiti, on the northern sector of the plateau. Successive waves of Austrian infantry were broken down by well-directed fire, or rolled back in disorder after having suffered serious losses.
On the whole front from Tolmino to the sea there were continuous actions by artillery of all calibers. The Austrian artillery continued its work of devastation on the city of Goritz.
On May 17, 1917, the Italian troops were engaged in fortifying the important position captured east of Goritz and organizing communication with the rear. The Austrians attempted but failed to hinder the work of the Italian forces.
During the night the Austrians under cover of darkness attempted surprise attacks upon positions on the bridgehead of Bodrez (on the Isonzo seven miles southwest of Tolmino), on the Vodice, Hill 592, and at Grazigna. In the morning the Austrians brought up strong reenforcements and renewed their attack, which was particularly violent in the Vodice region and south of Grazigna. Shattered by Italian battery fire the Austrian masses were counterattacked and repulsed by infantry, who at several points surrounded their assailants and forced them to surrender.
The number of prisoners by now had increased to 6,432, including 143 officers.
All along the front from Tolmino to the sea the artillery continued very active. Goritz again suffered very heavy damage.
Surprise attacks during the night of May 17, 1917, on Italian positions on the heights of Hill 592 on Monte Vodice were repulsed. In the morning of May 18, 1917, Italian troops opened a vigorous attack, with the object of capturing the heights of Hill 652 on Monte Vodice, the key to the Austrian defenses north of Monte Santo. The stubborn resistance of the Austrians, supported by numerous batteries of all calibers, which kept up a continuous fire from the rear, rendered the action long and severe. Advancing from rock to rock, expelling the Austrians from trench and cavern, destroying their machine guns, Italian infantry by evening succeeded in reaching the crest of the long-contested heights and maintaining the position against the concentrated fire of Austrian batteries.
With the capture of the ridge between Monte Cucco and Monte Vodice, the task of diverting the Austrian attention, which was assigned to the troops in the sector between Bodrez and Loga, was completed, and they withdrew to the right bank of the Isonzo without molestation from the Austrians.
In the region east of Goritz the Italians maintained all their positions against persistent attacks, which were particularly violent south of Grazigna and on the heights of Hill 174 south of Tivoli.