The Austrian offensive in the Trentino. The Italians were taken by surprise and yielded Asiago and Arsiero (May 31). But the Austrians lacked sufficient forces to break through, the more so as the Italians hastily brought up reserves from the Isonzo front. The Italian lines held, and by June 17 a counteroffensive was launched. When this came to a close (July 7), most of the territory had been recovered.