25 JUNE 1950:
Simultaneously with the invasion of South Korea, North Korean troops made an amphibious landing at Kangnung on the east coast just south of the 38th parallel. Meanwhile, North Korean fighter aircraft attacked Seoul and Kimpo airfields, destroying one USAF C-54 on the ground at Kimpo.
26 JUNE 1950
The North Koreans captured Chunchon, Pochon, and Tongduchon, South Korea. The U.S. Seventh Fleet sailed north from the Philippines. The ROK requested ten F-51s from the U.S. Air Force to supplement the South Korean Air Force's AT-6s and liaison-type airplanes. In continued preparation for air evacuation of U.S. citizens from Korea, Far East Air Forces (FEAF) traded C-54s for C-47s from all over the Far East, because the latter could land on smaller airfields.
USAF SB-17 aircraft provided rescue cover for the initial evacuation by sea of U.S. citizens from Seoul. ... Beginning in the early morning, F-82G Twin Mustang fighters of the 68th Fighter All Weather Squadron (FAWS) provided air cover for freighters, including the Reinholte, sailing from Inchon, South Korea, to Japan. The Fifth Air Force also flew escort and surveillance sorties, some over the straits between Japan and Korea, and some over the Seoul area.
27 JUNE 1950
The UN Security Council called on all UN members to aid South Korea. President Truman directed U.S. air and sea forces to assist the Republic of Korea, and General MacArthur ordered Far East Air Forces to attack North Korean units south of the 38th parallel.
... Far East Air Forces used Kimpo Airfield near Seoul and Suwon Airfield some twenty miles south of the capital for emergency air evacuation of 748 persons to Japan on C-54s, C-47s,and C-46s. Cargo aircraft assigned to the 374th Troop Carrier Wing (TCW) and FEAF headquarters accomplished the airlift, escorted by F-82s, F-80 jet fighters, and B-26 light bombers.
... When North Korean aircraft appeared over Kimpo and Suwon Airfields, the USAF aircraft flying air cover engaged the enemy in the first air battle of the war.
... In all, six pilots shot down over Kimpo seven North Korean propeller-driven fighters, the highest number of USAF aerial victories in one day for all of 1950.
Fifth Air Force B-26s, flying from Ashiya AB, Japan, attacked enemy targets in South Korea in the evening, but bad weather made the raids ineffective.
28 JUNE 1950
North Koreans captured Seoul, forcing the ROK government to move to Taejon. Enemy forces also occupied nearby Kimpo Airfield and, on the east coast, Mukho Naval Base below Kangnung. North Korean Yaks strafed Suwon Airfield, destroying one B-26 and one F-82.
Flying from Kadena Air Base (AB), Okinawa, the 19th Bombardment Group, in the first B-29 medium bomber strikes of the Korean War, attacked a railroad bridge and targets of opportunity such as tanks, trucks, and supply columns along North Korean invasion routes.
29 JUNE 1950
North Korean forces captured Kapyong and massed on the north shore of the Han River. Heavy fighting raged in the Kimpo area. North Korean aircraft bombed and strafed Suwon airfield, destroying a C-54 on the ground.
Eight B-29s of the 19th BG attacked enemy-held Kimpo Airfield and the Seoul railroad station, reportedly killing a large number of enemy troops. As the medium bombers turned toward Kadena, Okinawa, enemy aircraft attacked the formation, enabling B-29 gunners to shoot down for the first time in the war one of the opponent's airplanes.
Using RB-29 aircraft, the 31st Strategic Reconnaissance Squadron (Photographic) also started operations over Korea from Yokota, Japan.
30 JUNE 1950
Fifteen B-29s attacked railroad bridges, tanks, trucks, and troop concentrations on the north bank of the Han River in the Seoul area.