Yeoncheon Area Defense (1951. 7. 31~ 9. 7)
The Thai Battalion was attached to the U.S. 1st Cavalry Division and defended the Yuldong area, north of Yeoncheon, from Jul. 31 to Sep. 7, 1951. During this period, the Battalion operated the outpost in front of the main defense line and performed a reconnaissance mission on the enemy's outpost. While patrolling on Aug. 18, they found 2 company size Chinese Communist Army and successfully launched a surprise attack on them. The Battalion became a reserve unit on Sep. 7.
Battle of Pork Chop Hill (Hill 234, 20km Northwest of Yeoncheon; 1952. 11. 1~11)
This was the battle in which the Thai Battalion after being attached to the U.S. 2nd Division fought against 2 enemy regiments under the command of the Chinese Communist Army 113th Division while defending the main defense line, northwest of Yeoncheon. After destroying the defense facilities in the Pork Chop Hill with an attack at night on Nov. 1, Nov, 7 and Jan. 10, 1952, the Chinese Communist Army sent company or battalion size troops and attacked Hill 234 three times. The Thai Battalion stopped the Chinese Communist Army Attack Unit's advance using fire power support from the Regiment and Division, and defended this outpost by defeating the Chinese Communist Army with hand to hand combat. The Thai Battalion caused the Chinese Communist Army heavy loss while only incurring minimal loss in this battle. The Thai Battalion received a nickname 'little tiger' for its bravery in this battle and gave the U.N. Forces confidence that they could defeat the Chinese Communist Army.
Battle of Kimhwa Hill 351 (10km Northwest of Kimhwa; 1953. 7. 14~27)
This was the battle in which the Thai Battalion fought against enemy units (46th, 47th) under the command of the Chinese Communist 16th Army Corps at Hill 351 located in the mid-point between Pyonggang and Kimhwa. The Thai Battalion as a member of the U.S. 2nd Division was dispatched to Hill 351, an outpost of the Division, on Jul. 13, 1953, and it defeated the Chinese Communist Army's several attacks from Jul. 14 to Jul. 27 with close-range combat using fire power support from the Division. They defended the position until Jul. 27 when the cease-fire agreement was signed. As a result of this battle, Hill 351, a key point on the Pyonggang - Kimhwa line, was included in the south side after the cease-fire agreement.
After the cease-fire agreement, the Thai Navy was withdrawn in Jan. 1955 and the Air Force in Nov. 1964. The Ground Troops were withdrawn in 1954 while leaving 1 company, and the remaining Company left on Jun. 1972.