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Operation Prairie

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Operation Prairie

Operation Prairie was a U.S. military operation in Quảng Trị Province, South Vietnam that sought to eliminate People's Army of Vietnam (PAVN) forces south of the Demilitarized Zone (DMZ). Over the course of late 1965 and early 1966 the Viet Cong (VC) and the PAVN intensified their military threat along the DMZ. The tactical goal of these incursions was to draw United States military forces away from cities and towns. Operation Hastings, a series of actions in defense of the DMZ, lasted from 15 July to 3 August 1966. It was considered a strategic success. Operation Prairie was conceived as a larger, longer mission covering the same areas along the DMZ.

It commenced on 3 August 1966 and lasted for six months. The majority of the activities were conducted by the 3rd Marine Division in the Con Thien and Gio Linh regions with the main objective of stopping the PAVN 324B Division from crossing the DMZ and invading Quang Tri Province.

Various units engaged in fiercely fought actions during the operation, usually supported by a mixture of artillery, air and helicopter gunship support, sometimes including B-52 strategic bombers. By November the 324B Division had been withdrawn after heavy losses. It was replaced by other PAVN units, but these remained inactive.

The operation was considered highly successful by the Americans. They had lost 226 Marines killed against estimated PAVN of over 1,700 dead or captured and suppressed PAVN activity. However, the PAVN strategy had tied down large numbers of US troops in the area south of the DMZ, leaving population centers under-protected.

Over the course of late 1965 and early 1966 the Viet Cong (VC) and PAVN intensified their military threat along the DMZ. The tactical goal of these incursions was to draw United States military forces away from cities and towns; a similar strategy would be employed during the final months of 1967 in order to maximize the impact of the upcoming Tet Offensive. In response, the Marines elected to construct and reinforce a string of firebases south of the DMZ at Con Thien, Gio Linh, Camp Carroll, and Dong Ha. To support the defense of the DMZ area, Marines were often relocated from the southern regions of I Corps.

The original actions in defense of the DMZ, officially designated as Operation Hastings, began on 15 July 1966. Operation Hastings was a strategic success for American and Army of the Republic of Vietnam (ARVN) troops as the estimated enemy casualties reached upwards of 800 enemy soldiers. The operation, however, was only scheduled to last slightly longer than three weeks, reaching its conclusion on 3 August 1966.

Due to the initial, albeit brief, success of Operation Hastings the United States elected to essentially renew the mission and rename it Operation Prairie. Operation Prairie would cover the same areas along the DMZ that Operation Hastings had, as well as having the same mission. The formal objective of Prairie was to search the areas south of DMZ for PAVN troops and eliminate them. Operation Prairie also aimed to determine the extent of PAVN and VC infiltration of northern I Corps.

A majority of the activities would be conducted by the 3rd Marine Division in the Con Thien and Gio Linh regions beginning in early August 1966 with the main objective of tracking and stopping the PAVN 324B Division from crossing the demilitarized zone and invading Quang Tri Province. The preliminary plan centered on the insertion of four to five man "stingray" teams along the suspected enemy avenues of approach. If these reconnaissance teams encountered the enemy they would call for artillery support from Cam Lộ and helicopter or other aircraft support from Da Nang or Chu Lai. In the event that ground reinforcements were needed the infantry companies located at Cam Lộ and Dong Ha would provide them.

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