The US Army contribution to Inchon should also be mentioned.
US 7th infantry Division
The U.S. X Corps, at its embarkation, numbered slightly less than 70,000 men. Included as its major units were the 1st Marine Division, the 7th Division, the 92d and 96th Field Artillery Battalions, the 56th Amphibious Tank and Tractor Battalion, the 19th Engineer Combat Group, and the 2d Engineer Special Brigade.
Beefed up to around 23,000 men with 8,000 ROK members,including the ROK 17th Regiment.
187th Airborne RCT
Compensating, numerically at least, for this slight understrength of the 7th Division, MacArthur, after conceiving the idea that South Korea might be called on to provide soldiers for American units, attached more than 8,000 Koreans to the division. On 11 August he directed General Walker to procure, screen, and ship to Japan for use in augmenting the 7th Division approximately 7,000 able-bodied male Koreans. Fortunately the ROK Government cooperated since no American commander had authority beyond merely requesting these men. As a commentary on the desperation out of which this measure was born, General Wright on 17 August talked to the chief of staff, GHQ, by telephone from Korea. He told him that about 7,000 Koreans were being shipped out of Pusan that day. "They are right out of the rice paddies," he said, "and have nothing but shorts and straw hats. I understand they have been inoculated, given a physical examination and have some kind of paper. I believe we should get busy on equipment." These Korean men were brought to Japan, equipped and trained briefly, and then attached to the 7th Division.
The 187th was airlifted into Kimpo airport:
http://www.armyhistory.org/armyhistoric ... xCompID=32
With the outbreak of the Korean War in June 1950, the 187th, now a parachute unit, was called up for duty. Under the command of COL Frank S. Bowen, the 187th was paired up with the 674th Field Artillery Battalion and supporting units to form the 187th Airborne Regimental Combat Team (RCT).
The RCT left Camp Stoneman, CA, on 6 September 1950 and arrived in Japan on 20 September. Four days later, it was airlifted to Kimpo Airfield near Seoul, where it successfully cleared the Kimpo Peninsula.
The story of the McGovern brothers who both served with the 187th and died in Korea: