Gimpo International Airport Squadron shot down four Ilyushin Il-10s for no losses over Gimpo in the USAF's first jet-aircraft victory. Gimpo was captured by the KPA shortly after the capture of Seoul on 28 June 1950. On 29 June eight B-29s of the 19th Bomb Group bombed Gimpo and the Seoul railyards. By July the KPAF were using the base for attacks on UN forces, on 10 July, seven Yak-7s were hidden at Gimpo and used in strikes against UN positions at Cheongju. The next day they surprised and damaged several F-80s in the area. On 15 July the US launched an attack
Gimpo International Airport from Kaihwasan and Yangchan, several miles from the base. Then known as Keijo New Airfield (京城新飛行場) in Japanese parlance, Kimpo was constructed with four runways to supplement the much smaller Keijo Airfield (京城飛行場), which was later known as Yeouido Airport. Gimpo played a major role during the Korean War, and the USAF designated the airfield as Kimpo Air Base or K-14. North Korean forces attacked South Korea on 25 June 1950 starting the Korean War. During one of the first Korean People's Air Force (KPAF) attacks on 25 June a Military Air Transport Service C-54 Skymaster was destroyed on the