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Cambodian campaign
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Cambodian campaign
The Cambodian campaign (also known as the Cambodian incursion and the Cambodian liberation) was a series of military operations conducted in eastern Cambodia in mid-1970 by South Vietnam and the United States as an expansion of the Vietnam War and the Cambodian Civil War. Thirteen operations were conducted by the Army of the Republic of Vietnam (ARVN) between April 29 and July 22 and by U.S. forces between May 1 and June 30, 1970.
The objective of the campaign was the defeat of the approximately 40,000 troops of the People's Army of Vietnam (PAVN) and the Viet Cong (VC) in the eastern border regions of Cambodia. Cambodian neutrality and military weakness made its territory a safe zone where PAVN/VC forces could establish bases for operations across the border. With the US shifting toward a policy of Vietnamization and withdrawal, it sought to shore up the South Vietnamese government by eliminating the cross-border threat.
A change in the Cambodian government allowed an opportunity to destroy the bases in 1970, when Prince Norodom Sihanouk was deposed and replaced by pro-U.S. General Lon Nol. A series of South Vietnamese–Khmer Republic operations captured several towns, but the PAVN/VC military and political leadership narrowly escaped the cordon. The operation was partly a response to a PAVN offensive on March 29 against the Cambodian Army that captured large parts of eastern Cambodia in the wake of these operations. Allied military operations failed to eliminate many PAVN/VC troops or to capture their elusive headquarters, known as the Central Office for South Vietnam (COSVN) as they had left a month earlier, but the haul of captured materiel in Cambodia prompted claims of success.
The PAVN had been utilizing large sections of relatively unpopulated eastern Cambodia as sanctuaries into which they could withdraw from the struggle in South Vietnam to rest and reorganize without being attacked. These base areas were also utilized by the PAVN and VC to store weapons and other material that had been transported on a large scale into the region on the Sihanouk Trail. PAVN forces had begun moving through Cambodian territory as early as 1963.
Cambodian neutrality had already been violated by South Vietnamese forces in pursuit of political-military factions opposed to the regime of Ngô Đình Diệm in the late 1950s and early 1960s. In 1966, Prince Norodom Sihanouk, ruler of Cambodia, convinced of eventual communist victory in Southeast Asia and fearful for the future of his rule, had concluded an agreement with the People's Republic of China which allowed the establishment of permanent communist bases on Cambodian soil and the use of the Cambodian port of Sihanoukville for resupply.
During 1968, Cambodia's indigenous communist movement, labeled Khmer Rouge (Red Khmers) by Sihanouk, began an insurgency to overthrow the government. While they received very limited material help from the North Vietnamese at the time (the Hanoi government had no incentive to overthrow Sihanouk, since it was satisfied with his continued "neutrality"), they were able to shelter their forces in areas controlled by PAVN/VC troops.
The US government was aware of these activities in Cambodia, but refrained from taking overt military action within Cambodia in hopes of convincing the mercurial Sihanouk to alter his position. To accomplish this, President Lyndon B. Johnson authorized covert cross-border reconnaissance operations conducted by the secret Studies and Observations Group in order to gather intelligence on PAVN/VC activities in the border regions (Project Vesuvius).
The new commander of the US Military Assistance Command, Vietnam (MACV), General Creighton W. Abrams, recommended to President Richard M. Nixon shortly after Nixon's inauguration that the Cambodian base areas be bombed by B-52 Stratofortress bombers. Nixon initially refused, but the breaking point came with the launching of PAVN's Tet 1969 Offensive in South Vietnam. Nixon, angered at what he perceived as a violation of the "agreement" with Hanoi after the cessation of the bombing of North Vietnam, authorized the covert air campaign. The first mission of Operation Menu was dispatched on March 18 and by the time it was completed 14 months later more than 3,000 sorties had been flown and 108,000 tons of bombs had been dropped on eastern Cambodia.
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Cambodian campaign
The Cambodian campaign (also known as the Cambodian incursion and the Cambodian liberation) was a series of military operations conducted in eastern Cambodia in mid-1970 by South Vietnam and the United States as an expansion of the Vietnam War and the Cambodian Civil War. Thirteen operations were conducted by the Army of the Republic of Vietnam (ARVN) between April 29 and July 22 and by U.S. forces between May 1 and June 30, 1970.
The objective of the campaign was the defeat of the approximately 40,000 troops of the People's Army of Vietnam (PAVN) and the Viet Cong (VC) in the eastern border regions of Cambodia. Cambodian neutrality and military weakness made its territory a safe zone where PAVN/VC forces could establish bases for operations across the border. With the US shifting toward a policy of Vietnamization and withdrawal, it sought to shore up the South Vietnamese government by eliminating the cross-border threat.
A change in the Cambodian government allowed an opportunity to destroy the bases in 1970, when Prince Norodom Sihanouk was deposed and replaced by pro-U.S. General Lon Nol. A series of South Vietnamese–Khmer Republic operations captured several towns, but the PAVN/VC military and political leadership narrowly escaped the cordon. The operation was partly a response to a PAVN offensive on March 29 against the Cambodian Army that captured large parts of eastern Cambodia in the wake of these operations. Allied military operations failed to eliminate many PAVN/VC troops or to capture their elusive headquarters, known as the Central Office for South Vietnam (COSVN) as they had left a month earlier, but the haul of captured materiel in Cambodia prompted claims of success.
The PAVN had been utilizing large sections of relatively unpopulated eastern Cambodia as sanctuaries into which they could withdraw from the struggle in South Vietnam to rest and reorganize without being attacked. These base areas were also utilized by the PAVN and VC to store weapons and other material that had been transported on a large scale into the region on the Sihanouk Trail. PAVN forces had begun moving through Cambodian territory as early as 1963.
Cambodian neutrality had already been violated by South Vietnamese forces in pursuit of political-military factions opposed to the regime of Ngô Đình Diệm in the late 1950s and early 1960s. In 1966, Prince Norodom Sihanouk, ruler of Cambodia, convinced of eventual communist victory in Southeast Asia and fearful for the future of his rule, had concluded an agreement with the People's Republic of China which allowed the establishment of permanent communist bases on Cambodian soil and the use of the Cambodian port of Sihanoukville for resupply.
During 1968, Cambodia's indigenous communist movement, labeled Khmer Rouge (Red Khmers) by Sihanouk, began an insurgency to overthrow the government. While they received very limited material help from the North Vietnamese at the time (the Hanoi government had no incentive to overthrow Sihanouk, since it was satisfied with his continued "neutrality"), they were able to shelter their forces in areas controlled by PAVN/VC troops.
The US government was aware of these activities in Cambodia, but refrained from taking overt military action within Cambodia in hopes of convincing the mercurial Sihanouk to alter his position. To accomplish this, President Lyndon B. Johnson authorized covert cross-border reconnaissance operations conducted by the secret Studies and Observations Group in order to gather intelligence on PAVN/VC activities in the border regions (Project Vesuvius).
The new commander of the US Military Assistance Command, Vietnam (MACV), General Creighton W. Abrams, recommended to President Richard M. Nixon shortly after Nixon's inauguration that the Cambodian base areas be bombed by B-52 Stratofortress bombers. Nixon initially refused, but the breaking point came with the launching of PAVN's Tet 1969 Offensive in South Vietnam. Nixon, angered at what he perceived as a violation of the "agreement" with Hanoi after the cessation of the bombing of North Vietnam, authorized the covert air campaign. The first mission of Operation Menu was dispatched on March 18 and by the time it was completed 14 months later more than 3,000 sorties had been flown and 108,000 tons of bombs had been dropped on eastern Cambodia.
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