By June 1966 the Capital Division controlled all the area north of Qui Nhơn to the east of Route 1 and up to the base of Phù Cát Mountain. It extended its control also to the north and south of Route 19 up to the pass leading into An Khê. Working south along Highway 1 down toward Tuy Hoa and within Bình Định Province, the Division sent out reconnaissance parties and carried out small operations as far south as the border between Bình Định Province and Phú Yên Province.