Flying squadron is the basic tactical unit of aviation. Generally, there are 24 aircraft, and the other two aircraft are used as temporary combat readiness supplements to perform combat tasks within the establishment of the flight brigade or alone.

Usually, a squadron is a type of fighter, but modern warfare is composed of many types of fighters, including air-to-air fighters, electronic fighters, anti-submarine aircraft and attack aircraft.

For example, the famous HVA-46 Skull Squadron and the flight squadron of the Nimitz aircraft carrier are typical mixed formations: 8 F/A- 18, 6 F- 14, 6 A-6, 2 EA-6B and 2 S-3. But this is only the basic preparation, and it can be temporarily adjusted according to different tasks.

China's first squadron to undertake combat missions;

1949 From July 3/KLOC-0 to August 8, the Aviation Bureau of the Military Commission held the first aviation work conference in Beiping, which was devoted to studying the specific formation of the flight squadron and various implementation measures.

It was confirmed at the meeting that the formed flying squadron is a mixed flying squadron, which has two fighter units: 1 bomber unit and 1 ground unit. The required aircraft, aircrew and ground crew were transferred from the aviation offices of the northeast military regions and the old aviation school and concentrated in Peiping as soon as possible.

On August 15, the flight squadron was formally established at Beiping Nanyuan Airport. This is the first squadron of China People's Liberation Army to undertake combat tasks, including squadron leader Xu and political commissar Wang Pingyang.

The birth of squadron indicates that the people of China have their own air combat power. The squadron was originally equipped with 10 aircraft, including six P-5 1 fighters, two mosquito bombers and two PT- 19 trainers.

Although the number of planes is limited, everyone's combat vigilance and enthusiasm are very high, and 2 to 4 planes are kept on duty every day. Once the Kuomintang air force strikes, it can immediately take off and fight.

After short-term assault training and various preparations, the squadron officially took on the air defense mission in Beiping on September 5.