PAWS (Phased Array Warning System) early warning radar site in northern Taiwan, will enter service late 2012. Air Force Air Defense and Missile Command 5 Air Force Air Defense and Artillery Brigade, 791st Brigade, 792st Brigade, 793st Brigade, 794st Brigade,795st Brigade 2 Air Defense Missile I-HAWK battalions, 621st, and 623th battalions, with 9 companies/batteries. 2 TK-1/2 Air Defense Missile battalion, 793st Brigade, 611st battalion with 6 companies/batteries. 4 TK-3 Air Defense Missile battalion, 792st Brigade. 3 Patriot PAC-2+ GEM/PAC-3 Air Defense/Anti-Ballistic Missile battalion, with 9 mixed companies/batteries that are all upgrading to PAC-3 standard, with 6 more PAC 3 companies/batteries on order. 1 Skyguard Short Range Airbase Air Defense battalion, with 6 companies/batteries and radar sub units with OTO 35mm AAA, s 2 Antelope Short Range Airbase Air Defense battalions, with unknown companies/batteries. At least 2 AAA Air Defense Artillery battalions, with 40mm/L70 and 20mm AAA guns. Air Defense Artillery Training Center: Pingtung Target Service Squadron Education Service Support Company First training company Second training company Third training company Education, Training & Doctrine Command History Post-imperial China The Qing Dynasty had established aircraft operations at the Beijing Nanyuan airfield in 1909, just before the abolishment of their rule following the Double Ten Revolution in 1911, and became the airbase to where the early beginnings of the Republic of China Air Force took shape. In July 1917, Qing loyalist general Zhang Xun led the Manchu Restoration, and then-Premier of the Republic Duan Qirui ordered the bombing of the Forbidden City; the mission was carried out in a Caudron Type D aircraft piloted by Pan Shizhong () and bombardier Du Yuyuan () flying out of Nanyuan airfield, dropping three bombs over the Forbidden City, which caused the fatality of a eunuch, but otherwise inflicted minor damage. Before Civil War Formally established in 1920 as the Aviation Ministry, the ROCAF was active during the tenure of the ROC on Mainland China. In this period, various airplanes were purchased and deployed by warlords in their struggle for power until nominal Chinese reunification in 1928. The ROCAF immediately dispatched combat aircraft to the Hongqiao Aerodrome during the January 28th Incident of 1932, and aerial skirmishes occurred for the first time between China and the Imperial Japanese. In February 1932, US Reserve Lt. Robert McCawley Short, who was transporting armed Chinese aircraft, shot down an IJN aircraft on February 19, 1932, and downed another on February