Though most of the posts in the vicinity of the highway were cleared of the enemy by mid-June, some posts near Dras endured sporadic shelling until the end of the war. Once the NH 1A area was cleared, the Indian Army turned to driving the invading force back across the Line of Control. The Battle of Tololing, among others, slowly tilted the war in India's favour. Nevertheless, some Pakistani posts put up a stiff resistance, including Tiger Hill (Point 5140), which fell only later in the war. As the operation was fully under way, about 250 artillery guns were brought in to clear the infiltrators in posts that were in the line-of-sight. At many vital points, neither artillery nor air power could dislodge the Pakistan soldiers, who were out of visible range. The Indian Army mounted some direct frontal ground assaults, which were slow and took a heavy toll, given the steep ascents that had to be made on peaks as high as . Two months into the conflict, Indian troops had slowly retaken most of the ridges they had lost. According to official accounts, an estimated 75%–80% of the enemy-occupied area, and nearly all the high ground, was back under Indian control.