69 individual weapons, and a large quantity of mines and grenades, engineer equipment, explosives, medicine, and documents; in addition, 185 structures, 17 tons of food and of crops were destroyed. Thần Phong II In 1965, the VC attacked all over the Central Highlands in the II Military Region. In early July 1965, three People's Army of Vietnam (PAVN) regiments (including 32nd and possibly the 33rd) completely isolated the Central Highlands. ARVN units could not use National Routes 1, 11, 14, 19 and 21, and all resupplies to the Highlands had to be performed by air. On 8 July 1965 Hiếu, II Corps Chief of Staff, was entrusted with the design and execution of a plan to reopen National Route 19. Contrary to the general practice of a road-clearing operation by concentrating troops to progressively destroy the ambushes set up by the enemy along the highway, from D-6 to D+2, Hiếu ordered the 22nd Division and the 3rd Armored Squadron to attack from Qui Nhơn to Tuy Hòa along National Route 1; the 2nd Airborne Task Force together with Regional Forces and Civilian Irregulars Defense Group Forces to retake Lê Thành District; VNMC Alpha Task Force and the 42nd Regiment to attack from Pleiku up north to Đak Sut on National Route 14; and the 20th Engineer Group to attack from Phú Bổn to Tuy Hòa to repair Interprovincial Route 7. After sowing confusion among the enemy, Colonel Hiếu "press[ed] the Viet Cong from three directions with movements launched from Pleiku and Qui Nhơn and a vertical envelopment from north of An Khê. These maneuvers were executed by a task force of the Pleiku sector departing from Pleiku, two task forces of the 22nd Infantry Division departing from Qui Nhơn, and a task force of two airborne battalions heliborne into northern An Khê and attacking south with Task Force Alpha of the marines brigade conducting the linkup." These actions resulted in the free flow of cargo convoys during 5 days from D+3 to D+7, "allowing an initial buildup of 5,365 tons of supplies in Pleiku". Later, operational units withdrew to their camps during D+8 and D+9. As a result of Operation Thần Phong, "the convoys transfused new life into the Highlands. Along with an immediate drop of 25 to 30 percent in the price of food and commodities, the population regained their feelings of security, confidence, and hope. Schoolboys in Pleiku