Fighting occurred during the next few days in the Tonale region and in the Lagarina Valley. On the Piave an Italian detachment crossed the western branch of the river, made a surprise landing on an islet west of Grave di Papadopoli and occupied it. Thirty-six prisoners and four machine guns were captured. In the Tonale region Austrian reactions against advanced Italian positions were repulsed on August 15, 1918. On the Piave, southwest of Grave di Papadopoli, three hostile attacks against the Italian garrison were driven back with heavy losses. Four hostile aeroplanes and a captive balloon were brought down. There was lively activity by both artilleries during August 16, 1918, on the Asiago Plateau, northwest of the region of Monte Grappa, and on the middle Piave. In the upper Zebru Valley one of the Italian patrols attacked an enemy advance post at an altitude of over 11,000 feet and drove it back. Two hostile aeroplanes were downed. On August 17, 1918, there were isolated artillery actions from Stalvio to Asiago, in the Grappa region, and on the lower Piave. After violent artillery preparation the enemy attempted, by strong encircling attacks, to retake the Piave Islet, captured by the Italians a few days earlier. After suffering heavy losses, abandoning machine guns and material, and leaving twenty-nine prisoners in Italian hands, the Austrians were forced to retire. Still another Austrian attack, made the next day, August 18, 1918, against the same position broke down under Italian fire. On the whole front there were artillery duels and considerable activity by reconnoitering patrols. Early in the morning of August 19, 1918, after violent artillery bombardments, numerous enemy troops attacked from west and from north the Italian lines on the Cornone, forming southern slopes of the Sasso Rosso, on the Asiago front. The Italian garrison stopped the enemy after a brisk hand-to-hand struggle. Reenforcements quickly arrived, counterattacked the enemy, repulsed him with heavy losses, and captured prisoners. Austrian attempts to attack Italian advanced lines north of the Ledro Lake and to surprise protection patrols north of the Col del Rosso were hindered by Italian fire. British reconnoitering parties captured a few prisoners on the Asiago Plateau. Allied batteries had been very active from the Lagarina Valley to Astico Valley. An unusual enemy artillery activity in the Asalone area provoked effective concentrations of fire on the part of the Italian batteries. [Illustration: Italy's successful offensive, October, 1918.]