The Italians established themselves on the southern side of the Assa Valley and gained possession of trenches near Zebio and Zingarella. The following day, June 29, 1916, the Italian line in the region between the Val Lagarina and the Val Sugana was pushed forward still further until it reached the main Austrian line of resistance.
With the support of their artillery they renewed their attack on the strongly fortified line of the Austrians from Monte Interrotto to Monte Campigoletto and captured two important points of the Austrian defenses, near Casera, Zebio and Malga Pozza, taking 359 prisoners, including 5 officers and 3 machine guns.
Step by step they pushed their way back into the territory from which the Austro-Hungarian offensive of a few weeks ago had driven them. On July 18, 1916, the Italians gained some new positions on the rocky slopes of the Corno del Coston in the upper Posina Valley. Four days later, July 22, 1916, they captured some trenches on Monte Zebio on the Sette Comuni Plateau.
During the following night Austrian detachments entered through galleries dug under the snow one of the Italian trenches near Casere Zebio Pastorile. After heavy hand-to-hand fighting they were repulsed with considerable loss, leaving some prisoners in the hands of the Italians.
During the next few days the Italian artillery was again lively on several sectors of the mountain front. Tarvia was repeatedly shelled. On February 19, 1917, Austrian patrols made twenty-two prisoners as the result of an enterprise against Italian positions east of Monte Zebio and north of Assio.
On the Asiago Plateau Italian artillery destroyed the Austrians' complex system of defenses at several points. Italian infantry, attacking during a violent storm in the direction of Monte Zebio and Monte Forno, carried the pass of Agnello, and captured nearly the whole of Monte Ortigara, 6,924 feet high, east of Cima Undice.
The Italians captured what was left of the enemy garrison and two 75-mm. guns, one trench mortar, four machine guns, and a large quantity of supplies and ammunition. On the front of the Asiago Plateau the Austrian artillery continued to show great activity. Patrol attacks on Italian positions on Monte Zebio were repulsed.