The establishment of China Air Force is as follows: an Air Force Division has three flying regiments, a flying regiment has three flying brigades, and a flying brigade has three flying squadrons. A squadron of China Air Force has three combat aircraft. In other words, a flight regiment of China Air Force has 27-30 combat aircraft, and a flight division has more than 80 fighters. Among them, the flight group consists of three flight brigades (positive battalion) and 1 maintenance brigade (positive battalion), and the maintenance brigade consists of three maintenance squadrons (positive company). So a squadron has about 10 planes, and the squadron leader is a company commander.