1950, at Camp Lejeune, North Carolina, and again assigned to the 1st Marine Division, Fleet Marine Force. It was almost immediately deployed to Kobe, Japan in preparation for its participation in the Korean War from September 1950 – July 1953, during which it fought at Inchon-Seoul, Chosin Reservoir, the East Central Front, and the Western Front. After the war, the unit aided in the defense of the Korean Demilitarized Zone. On September 20th, 1950. The 2nd Battalion, 1st Marines set up a L-shaped ambush near Yongdungpo. A North Korean column of hundreds of NKPA troops and five T-34 tanks headed blindly into the ambush set by the Marines. Short-range fire from Marine 3.5-inch bazookas knocked out the first two enemy tanks; a storm of direct and indirect fire cut down the supporting infantry, killing 300 North Korean men. The surviving North Koreans withdrew to their prepared defenses within Yongdungpo. After the war, in April 1955, the unit was relocated to Camp Pendleton, California, where it participated in the transplacement system between the 1st and 3rd Marine Divisions. Vietnam War Deployed during November 1965 to South Vietnam, and assigned to the 3rd Marine Division, Fleet Marine Force Participated in the War in Vietnam, November 1965 – May 1971, Thừa Thiên Province Huế/Phu Bai) Quảng Nam Province Da Nang Air Base Quảng Trị Province Quảng Tín Province Major Operations and Battles Operation Oregon Quảng Trị Province Mar 20–23, 1966 Operation Hastings/Operation Deckhouse II Quảng Trị Province Jul 7 – August 3, 1966 Thủy Bồ incident Quảng Nam province Jan 31 – Feb 1, 1967, According to Vietnamese communist sources, from 31 January to 1 February 1967, Company H massacred up to 145 Vietnamese civilians, while according to American sources, 101 Vietcong and 22 civilians were killed in two days of fighting with Vietcong insurgents who occupied the village. The Americans suffered 5 dead and 26 wounded. Operation Union I/Operation Lien Ket 102 Quảng Nam and Quảng Tín Provinces Apr 21 – May 17, 1967 Operation Medina Quảng Trị Province Oct 11–20, 1967 Operation Kentucky Quảng Trị Province November 1, 1967 – February 28, 1968 Operation Napoleon/Saline Quảng Trị Province Feb 19 – December 9, 1968 Battle of Huế Thừa Thiên Province January 30 – March 3, 1968 Operation Scotland II Quảng Trị Province April 15, 1968 – February 28, 1969 Detached during April 1971 from the 1st Marine Division, and reassigned to