The valley being in their possession, the Germans wasted no time. Pushing northward along the river, one detachment occupied Idersko and Caporetto; another proceeded to assault the height of Starijok, just above Caporetto; yet another strong force made a frontal attack on the ridge of Zagradan, which runs like a wall along the Italian side of the river, and after fierce fighting took Luico, one of the pivots of the defenses upon it. Elsewhere he had attacked at the same time with less definite result. Mount Globocak was seized by surprise. It was an Italian big-gun position, and orders were given for it to be retaken at any cost. So a distinguished brigade of bersaglieri was sent up to counter-attack, and drove the Germans from the captured guns down the slopes of Globocak again. North of Caporetto, too, the angle of the Italian line at Zaga had been assailed, but had resisted, and across the river on the Bainsizza plateau the most violent fighting of all took place, as a result of which the Italian line was withdrawn from Kal, and the heavy guns and equipment were sent back across the Isonzo, though the Italian counter-attacks on the Bainsizza were carried out with such dash that they captured several hundred Austrian prisoners. [Sidenote: Danger that the Italian Army may be trapped.] Now the enemy's plan stood out in all its formidable strength and strategy. He had opened a gap in the Italian front; through this gap he was pouring overwhelming forces. Already the rest of the Italian Second Army and the Third Army on the Carso to the south of it were outflanked. If the whole of that great force was not to have its line of communications cut and be surrounded, it must be immediately and rapidly withdrawn for a great distance. An immense sacrifice of Italian territory was imperative if the Italian Army was to be saved from a trap by the side of which the fall of Metz was the capture of an outpost. During the afternoon of October 25 the general order of retreat was given. [Sidenote: Austrians use seventeen-inch howitzers.] I went up again to visit the British batteries which were with the Third Army on the afternoon of the twenty-fifth, and from one of their observatories watched the heavy shelling. The Austrians were using huge seventeen-inch howitzers, and the explosions of their gigantic shells, each weighing a ton, was like a small eruption. A solid block of piebald smoke as big as a cathedral sprang into the air and it was a minute or more before the last of it had drifted away. [Sidenote: Monfalcone the most romantic point in the fighting line.]