On the same day the coast front, the Carso Plateau, and the Tolmino bridgehead were shelled strongly by Italian artillery. On some sectors of the Tyrol front there was continued activity on the part of patrols and the artillery. In the zone between Vallarsa and the head of the Posina Valley Italian infantry captured a strong intrenchment at the bottom of the Leno Valley. Between Monte Spil and Monte Corno they completed capture of the trenches still left in Austrian hands after the fighting of September 7, 1916. Progress was made by the Italians on the ground north of Monte Pasubio and on the northern slopes of Corno del Coston, in the upper Posina Valley. Italian batteries destroyed military depots near St. Ilanio north of Rovereto. The Austrians shelled Caprile, in Cordevole Valley, and Cortina d'Ampezzo. On September 12, 1916, Italian Alpine troops, north of Falzarego gained possession of a position which not only commanded Travenanzes Pass, but also interrupted communications between the Travenanzes Valley and the Lagazuoi district. This success was extended on the next day, September 13, 1916, when Italian detachments by a daring climb succeeded in taking some positions in the Zara Valley in the Posina sector and on Monte Lagazuoi in the Travenanzes-Boite Valley. Once more, on September 14, 1916, the Italians opened a new offensive in the region of the Carso Plateau. Artillery and mine fire increased there with the greatest violence. In the afternoon strong infantry forces in dense formation advanced to the attack. Along the whole front between the Wippach River and the sea fierce fighting developed, and the Italians in some places succeeded in penetrating the Austrian first-line trenches and in maintaining themselves there. North of the Wippach, as far as the region of Plava, artillery fire was very lively, but no infantry engagements worth mentioning developed. In the Fiemme Valley artillery duels continued. Several attacks delivered by Italian detachments about a battalion strong against the Bassano ridge were repulsed. A second attack on the Carso Plateau in the evening of September 14, 1916, carried the Italian lines forward a few more miles and enabled them to surround the height and village of San Grado. After bombarding the Austrian positions for eight hours, this height and the village were stormed on the following day, September 15, 1916.