The Kingdom of Thailand was one of the 21 countries who responded to the United Nations request to send troops to aid South Korea during the Korean War 1950–1953.

Prime Minister Plaek Phibunsongkhram told parliament that, "by sending just a small number of troops as a token of our friendship, we will get various things in return."

After the engagement, the United States military awarded Major Kriangsak Chamanan the Legion of Merit of which he was later invited and received scholarship to study at Fort Leavenworth, where he left his name in the school hall of fame.

[5] In last spring of the war (March to June 1953), the Thai infantry spent most of their time training and as 9th US Corps reserve.

They served under United Nations command, performing escort duty and shelling enemy targets on land.

Royal Thai Air Force (RTAF) Douglas C-47 Skytrain aircraft took part in the Korean War.

Thailand still maintains, as of 2020, one liaison officer at the Armistice Committee site and six soldiers as members of the United Nations Command Honor Guard Company in Seoul.