Austrian Counterattacks End Tenth Battle of the Isonzo
June 4 1917, Jamiano–The latest Italian offensive had ended on May 28, having won (at great cost) many of the hills around Plava and some modest gains on the Karst–the most success the Italians had had since the capture of Gorizia. The Austrians had once again prevented a breakthrough, though they had suffered tremendously as well. Despite their heavy losses, Boroević was determined to retake some of the lost ground, and had been ordering local counterattacks.
One of the most successful of these came on the southern Karst on June 4. After a brief yet accurate barrage before dawn, Austrian stormtroopers (many freshly arrived from the Eastern Front) attacked the Italian positions reeling from the barrage. They successfully seized their objectives, advancing more than a third of a mile and capturing over 7,000 prisoners in a few hours. In many places, the Italians had surrendered without resistance. Cadorna, outraged that his few gains were being reversed, launched counterattacks the next day to little effect; the Tenth Battle of the Isonzo was over by the end of June 5.
Neither army was in a condition to continue the fight. Both sides had suffered around 60% casualties, though the Italians had suffered four times as many killed. An ominous signal of Italian morale was that more of their troops had been captured than the Austrians, despite being on the offensive.
Sources include: John R. Schindler, Isonzo; Mark Thompson, The White War; Randal Gray, Chronicle of the First World War.