To the west of the Val d'Assa that Cadorna had ordered the preparation of a third line of defence that ran from Cima Portule (7,570 ft.) east of the Val d'Assa and round the southern rim of the Asiago basin by Punta Corbin across the Astico to the mountains south of the Posina.
A retreat was ordered to the Portule line, east of the Val d'Assa, which was supposed to be the principal line of resistance.
Next day the attack was continued from north and west, and the Italians were swept off the whole line between the Val d'Assa and the Val Galmarara.
The line chosen by Krauss ran from south of Rovereto in front of Col Santo to the Borcola Pass; thence along the rim of the Arsiero plateau, north of the Posina and east of the Upper Astico; thence north-eastward across the Val d'Assa to Monte Mosciagh, and thence northward to the old frontier.
This gave a very strong defensive line, with ample depth east of the Upper Val d'Assa, which therefore remained entirely in Austrian hands, a useful line of communication in any case, and an invaluable opening in the event of further offensive action.