MACV was created on 8 February 1962, in response to the increase in United States military assistance to South Vietnam. MACV was implemented to assist the Military Assistance Advisory Group (MAAG) Vietnam, controlling every advisory and assistance effort in Vietnam. It was reorganized on 15 May 1964 and absorbed MAAG Vietnam to its command when combat unit deployment became too large for advisory group control.[2]:59
General Paul D. Harkins was the first commanding general of MACV (COMUSMACV), and was previously the commander of MAAG Vietnam. After reorganization he was succeeded by General William C. Westmoreland in June 1964, followed by General Creighton W. Abrams (July 1968) and General Frederick C. Weyand (June 1972).[2]:59
Admiral Harry D. Felt, Commander-in-Chief, Pacific, established the U.S. Military Assistance Command, Vietnam, on 8 February 1962, as a subordinate unified command under his control.[3]:27–8 Lieutenant General Paul D. Harkins, the Deputy Commander in Chief, U.S. Army, Pacific, who, as the commander-designate for the task force headquarters (HQ) in the event of operations in Southeast Asia, had participated in the planning for such operations, was appointed commander and promoted to general.
Harkins became the senior U.S. military commander in South Vietnam and responsible for U.S. military policy, operations and assistance there. Harkins had the task of advising the South Vietnamese government on security, organization, and employment of their military and paramilitary forces. As provided for in the organization of the task force headquarters in the contingency plans, MACV's commander was also his own Army component commander. With an initial authorized strength of 216 men (113 Army), MACV was envisaged as a temporary HQ that would be withdrawn once the Viet Cong insurgency was brought under control. In that event, the Military Assistance Advisory Group would be restored to its former position as the principal U.S. headquarters in South Vietnam. For this reason, the MAAG was retained as a separate headquarters.
In March 1962 Headquarters, U.S. Army, Pacific, removed the "provisional" designation from the U.S. Army Support Group, Vietnam, attached it to U.S. Army Ryukyu Islands, for administrative and logistical support, and made its commanding officer the deputy Army component commander under MACV. All U.S. Army units in South Vietnam, excluding advisory attachments, were assigned to the Army Support Group for administrative and logistical needs. Over the course of 1962 U.S. military strength in South Vietnam rose from about 1,000 to over 11,000 personnel. Each service continued to provide its own logistical support.
Throughout 1963 the duties of the U.S. Army Support Group steadily increased, particularly regarding to combat support activities and logistics. During the year, the U.S. buildup continued, especially in aviation, communications, intelligence, special warfare and logistic units, reaching a total of 17,068 men, of which 10,916 were Army. Because of this expansion, the commanding general, General Joseph Warren Stilwell Jr. late in 1963 proposed that the name of the support group be changed to U.S. Army Support Command, Vietnam. Harkins concurred and General James Francis Collins, commander of United States Army, Pacific and Admiral Felt approved the redesignation. The new designation went into effect on 1 March 1964.[3]:37
MACV was reorganized on 15 May 1964, and absorbed MAAG Vietnam within it, when combat unit deployment became too large for advisory group control. A Naval Advisory Group was established and the Commanding General, 2nd Air Division, became MACV's Air Force component commander.[3]:41 That year the U.S. strength in Vietnam grew from about 16,000 men (10,716 Army) to about 23,300 (16,000 Army) in 1964. Logistic support operations were highly fragmented. As a result, the 1st Logistics Command was established.[3]:43–5
The brigade from the 101st Airborne Division was originally planned to replace the 173d Airborne Brigade but, with the need for additional combat forces, both brigades remained in South Vietnam. Two months later, the 1st Cavalry Division (Airmobile), recently reorganized from an infantry formation, reported in country, and the rest of the 1st Infantry Division arrived in October.
In April 1967, General Westmoreland, who had arrived in June 1964 as Commander of MACV, organized a division-sized blocking force along the border between North and South Vietnam.[4]:330–1 The deployment of a division-sized U.S. Army force would allow the 1st Marine Division to move north, to provide greater support for the 3rd Marine Division in the northern portion of the I Corps Tactical Zone. Designated as Task Force Oregon, it included the 196th Infantry Brigade; the 3rd Brigade, 25th Infantry Division at Chu Lai Base Area; and the 1st Brigade, 10lst Airborne Division. On 25 September 1967 the 23rd Infantry (Americal) Division) was activated to control the blocking force, replacing the provisional task force HQ. With the elapse of five months, all the three same brigades remained in the new division, but the brigade at Chu Lai was now named the 3rd Brigade, 4th Infantry Division, after a responsibility swap that had occurred in August.
In April 1966, all Army communications-electronics resources in South Vietnam were combined in a single formation, the 1st Signal Brigade.[3]:60–1 It supported the combat signal battalions of the divisions and field forces in each corps area. The 1st Signal Brigade operated the many elements of the Defense Communications System in South Vietnam. To improve co-ordination and management of communications-electronics assets, the brigade commander served as the U.S. Army, Vietnam, staff adviser on all matters pertaining to Army communications-electronics.
Naval Forces, Vietnam
In contrast to the carrier, amphibious, and naval gunfire support forces and, at least during early 1965, the coastal patrol force, which Commander Seventh Fleet directed, the Navy's forces within South Vietnam were operationally controlled by COMUSMACV.[5] Initially, Westmoreland exercised this command through the Chief, Naval Advisory Group. However, the increasing demands of the war required a distinct operational rather than an advisory headquarters for naval units. As a result, on 1 April 1966, Naval Forces, Vietnam, was established to control the Navy's units in the II, III and IV Corps Tactical Zones. This eventually included the major combat formations: Coastal Surveillance Force (Task Force 115), River Patrol Force (Task Force 116) and Riverine Assault Force (Task Force 117). The latter unit formed the naval component of the joint Army-Navy Mobile Riverine Force.[6]:1–5
Commander Naval Forces, Vietnam (COMNAVFORV) also controlled the Naval Support Activity Saigon (NSA Saigon), which supplied naval forces in the II, III and IV Corps areas.[6]:2Naval Support Activity Danang (NSA Danang), provided logistic support to all American forces in I Corps, where the predominant Marine presence demanded a naval supply establishment. NSA Danang was under the operational control of Commander III Marine Amphibious Force.[6]:4–5
The "Commander, U.S. Military Assistance Command, Vietnam" was known by the abbreviation COMUSMACV (/ˌkɒm.juːɛsˌmækˈviː/ "com-U.S.-mack-vee").[7] COMUSMACV was in one sense the top person in charge of the U.S. military on the Indochinese peninsula; however, in reality, the CINCPAC and the U.S. ambassadors to Vietnam, Laos, and Cambodia also had "top person in charge" status with regard to various aspects of the war's strategy.
As the U.S. military presence in South Vietnam grew, MACV quickly outgrew the Pasteur Street quarters and expanded into a proliferating number of buildings throughout downtown Saigon. This added to the command’s existing security vulnerabilities and communications difficulties. In March 1965, Westmoreland began a search for a new location large enough to accommodate the entire headquarters. He initially tried to obtain a site between the ARVN Joint General Staff compound and Tan Son Nhut Airport, desirable from the standpoint of removing Americans from central Saigon and placing MACV conveniently close to its Vietnamese counterpart.[8]
On 2 July 1966 construction started on a new purpose-built facility. The building was designed and constructed under the supervision of the U.S. Navy Officer in Charge of Construction RVN. The construction contractor was RMK-BRJ, at a cost of $25 million. MACV occupied its new headquarters early in August 1967. The new complex soon earned the nickname "Pentagon East."[8]:270
The air-conditioned structure of two-story prefabricated buildings, a little more than a third the size of its Washington namesake, included twelve acres of enclosed office space. In addition to the headquarters offices, the complex included a barracks, a mess hall, a refrigerated storage building and its own power plant and telephone exchange. Inside, according to one staff officer, "the well-waxed corridors had the fluorescent feel of an airport terminal." A cyclone fence, topped with barbed wire and with watch towers at intervals, provided close-in protection.[8]:270
Following the closure of MACV and the establishment of the DAO, the MACV Headquarters became the DAO Compound.
Original MACV HQ, 606 Trần Hưng Đạo, Cholon, Saigon
Entrance to second MACV HQ, 137 Pasteur St, Saigon
MACV Headquarters ("Pentagon East") at Tan Son Nhut, 1969
Inactivation
Under the terms of the Paris Peace Accords MACV and all American and third country forces had to be withdrawn from South Vietnam within 60 days of the ceasefire. A small U.S. military headquarters was needed to continue the military assistance program for the southern Republic of Vietnam Military Forces and supervise the technical assistance still required to complete the goals of Vietnamization. This headquarters became the Defense Attaché Office, Saigon. That headquarters also reported operational and military intelligence through military channels to DOD authorities.[9]
The advance echelon of USSAG/7AF moved from Tan Son Nhut Air Base to Nakhon Phanom on 29 January 1973. Transfer of the main body, drawn largely from the operations and intelligence sections of MACV and Seventh Air Force, began on 10 February. USSAG was activated on 11 February 1973 under the command of commander of MACV. At 08:00 on 15 February, USAF General John W. Vogt Jr., as USSAG/7AF commander, took over from MACV control of American air operations.[10]:397[11]:48 U.S. air support operations into Cambodia continued under USSAG/7th AF until August 1973.[9]:18
The DAO was established as a subsidiary command of MACV and remained under the command of commander of MACV until the deactivation of MACV on 27 March 1973. Command then passed to the Commander USSAG/Seventh Air Force at Nakhon Phanom.[11]:52 The DAO was activated on 28 January 1973 with United States ArmyMajor GeneralJohn E. Murray, formerly MACV director of logistics, as the Defense Attaché and United States Air ForceBrigadier General Ralph J. Maglione, formerly the MACV J-1 (Director for Manpower and Personnel), as deputy Defense Attaché.[9]:18–9
By 29 March, the only American military personnel left in South Vietnam were the U.S. delegates to the Four-Party Joint Military Commission established under the Paris Peace Accords to oversee the ceasefire, themselves in the process of winding up work and departing; the fifty man DAO military contingent; and a 143-man Marine Security Guard. At 11:00 on the 29th, in a simple ceremony, General Weyand furled the colors of the Military Assistance Command, Vietnam, and formally inactivated it.[10]:400
A Military Assistance Advisory Group (MAAG) is a designation for a group of United States military advisors sent to other countries to assist in the training of conventional armed forces and facilitate military aid. Although numerous MAAGs operated around the world throughout the 1940s–1970s, including in Yugoslavia after 1951, the most famous MAAGs were those active in Southeast Asia before and during the Vietnam War.
The 1st Theater Sustainment Command is a major subordinate unit of United States Army Central at Fort Knox, Kentucky, United States.
The United States Army, Vietnam (USARV) was a Corps-level support command of the United States Army during the Vietnam War.
XXIV Corps was a U.S. Army Corps-level command during World War II and the Vietnam War.
The Battle of Xuân Lộc was the last major battle of the Vietnam War that took place at Xuân Lộc, Đồng Nai Province. Over a period of twelve days between 9 and 21 April 1975, the outnumbered South Vietnamese reserves attempted to stop the North Vietnamese forces from overrunning the town and breaking through towards South Vietnam's capital, Saigon. The Army of the Republic of Vietnam (ARVN) committed almost all their remaining mobile forces, especially the 18th Division, under Brigadier General Lê Minh Đảo, to the defence of the strategic crossroads town of Xuân Lộc, hoping to stall the People's Army of Vietnam (PAVN) advance. The battle ended when the town of Xuân Lộc was captured by the PAVN 4th Army Corps led by Major General Hoàng Cầm.
The Nakhon Phanom Royal Thai Navy Base (NKP), formerly Nakhon Phanom Royal Thai Air Force Base, is a Royal Thai Navy facility used for riverine patrols along the Mekong River. It is approximately 587 km (365 mi) northeast of Bangkok, 14.5 km (9.0 mi) west of Nakhon Phanom city in Nakhon Phanom Province in the northeastern region of Thailand, and 411 km (255 mi) from Hanoi in Vietnam. The Mekong River is NKP's border with Laos. The airfield at NKP is jointly used as a civilian airport.
The 18th Division was an infantry division in the III Corps of the Army of the Republic of Vietnam (ARVN). The U.S. Military Assistance Command Vietnam considered the 18th as undisciplined and it was well known throughout the ARVN for its "cowboy" reputation. In 1975 the 18th was made famous for its tenacious defense of Xuân Lộc, the last major battle before the Fall of Saigon.
Free World Military Assistance Forces was the group of allied nations who sent troops to fight in the Vietnam War under the FWMF banner, assisting the United States and South Vietnam against the Viet Cong (VC), China, Soviet Union, North Korea and People's Army of Vietnam (PAVN). Together with the U.S. and South Vietnamese, the FWMF were often referred to as the Allies.
The South Vietnamese Regional Forces, originally the Civil Guard, were a component of Army of the Republic of Vietnam (ARVN) territorial defence forces. Recruited locally, they served as full-time province-level forces, originally raised as a militia. In 1964, the Regional Forces were integrated into the ARVN and placed under the command of the Joint General Staff.
The South Vietnamese Popular Force was a part-time local militia of the Army of the Republic of Vietnam (ARVN) during the Vietnam War. The South Vietnamese Popular Force mainly protected homes and villages in South Vietnam from attacks by the Viet Cong (VC) and later the People's Army of Vietnam (PAVN).
The Fifth Division of the Army of the Republic of Vietnam (ARVN)—the army of the nation state of South Vietnam that existed from 1955 to 1975—was part of the III Corps that oversaw the region of the country surrounding the capital, Saigon.
The 25th Division of the Army of the Republic of Vietnam (ARVN)—the army of the nation state of South Vietnam that existed from 1955 to 1975—was part of the III Corps that oversaw the region of the country surrounding the capital, Saigon. It was based at Củ Chi Base Camp to the northwest of the city.
The 21st Division of the Army of the Republic of Vietnam (ARVN)—the army of the nation state of South Vietnam that existed from 1959 to 1975, was part of the IV Corps that oversaw the southernmost region of South Vietnam, the Mekong Delta. The 21st Division was based in Chương Thiện Province, the southernmost province in the whole country, in an area dominated by jungles and swamps.
The Vietnamese Airborne Division or VNAD was one of the earliest components of the Republic of Vietnam Military Forces. The Vietnamese Airborne Division began as companies organized in 1948, prior to any agreement over armed forces in Vietnam. After the partition of Vietnam, it became a part of the Army of the Republic of Vietnam. This division had its distinct origins in French-trained paratrooper battalions, with predecessor battalions participating in major battles including Dien Bien Phu and retained distinct uniforms and regalia. With the formation of an independent republic, the colonial paratroopers were dissolved, however regalia and aesthetics alongside the nickname "Bawouans" would be retained.
The 1959 to 1963 phase of the Vietnam War started after the North Vietnamese had made a firm decision to commit to a military intervention in the guerrilla war in the South Vietnam, a buildup phase began, between the 1959 North Vietnamese decision and the Gulf of Tonkin Incident, which led to a major US escalation of its involvement. Vietnamese communists saw this as a second phase of their revolution, the US now substituting for the French.
The year 1968 saw major developments in the Vietnam War. The military operations started with an attack on a US base by the North Vietnamese People's Army of Vietnam (PAVN) and the Viet Cong (VC) on January 1, ending a truce declared by the Pope and agreed upon by all sides. At the end of January, the PAVN and VC launched the Tet Offensive.
The U.S. Naval Forces, Vietnam was a command of the United States Navy, active during the Vietnam War, from 1 April 1966 to 29 March 1973.
The Defense Attaché Office, Saigon was a joint-service command and military attaché branch of the United States Department of Defense (DOD) under the control of United States Support Activities Group (USSAG). It assumed all DOD responsibilities in South Vietnam following the disestablishment of Military Assistance Command, Vietnam (MACV) in March 1973. The DAO was responsible for administering military assistance and support to the South Vietnamese armed forces, the gathering and distribution of military intelligence and the performance of normal Defense Attaché functions. The DAO remained in existence until August 1975.
The Joint General Staff (JGS) was a body of senior uniformed leaders in the South Vietnamese military which advised the Ministry of National Defence and the President of South Vietnam.
The Joint Casualty Resolution Center was a joint task force within the United States Department of Defense, whose mission was to account for United States personnel listed as Missing in Action (MIA) in the Vietnam War.
References
1 2 United States. Dept. of the Army Pamphlet 672-3. Update. Washington: GPO, 1986.
Dunham, George R (1990). U.S. Marines in Vietnam: The Bitter End, 1973–1975 (Marine Corps Vietnam Operational Historical Series). Marine Corps Association. ISBN978-0-16-026455-9. This article incorporates text from this source, which is in the public domain.
Sorley, Lewis (1999). A Better War. Harcourt, Inc., New York. ISBN978-0-15-601309-3.
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