Operation Pipestone Canyon

Operation Pipestone Canyon was a US Marine Corps, Army of the Republic of Vietnam (ARVN) and Republic of Korea Marine Corps (ROKMC) operation that took place on Go Noi Island, Quảng Nam Province, lasting from 26 May to 7 November 1969.

Background

Go Noi Island was located approximately 25 km south of Danang to the west of Highway 1, together with the area directly north of the island, nicknamed Dodge City by the Marines due to frequent ambushes and firefights there, it was a Vietcong (VC) and People's Army of Vietnam (PAVN) stronghold and base area.[1] While the island was relatively flat, the small hamlets on the island were linked by hedges and concealed paths providing a strong defensive network. Go Noi was the base for the VC's Group 44 headquarters for Quảng Nam Province, the R-20 and V-25 Battalions and the T-3 Sapper Battalion and, it was believed, elements of the PAVN 2nd Division. The Marines had conducted Operation Jasper Square on the island during April 1968 with minimal results and then Operation Allen Brook from May to August 1968 severely disrupting the VC/PAVN infrastructure.[2] In late November the Marines had launched Operation Meade River against the Dodge City area inflicting serious losses on the VC/PAVN.[2]:426

Despite the earlier operations the VC/PAVN returned to the area and by mid-1969 it was believed to be the base area for the PAVN 36th Regiment comprising the R-20, D-3 Sapper, T-3 Sapper and T-89th Sapper Battalions and elements of the disbanded 38th Regiment.[3]

In mid-May 1st Marine Division commander MG Ormond R. Simpson briefed the 1st Marine Regiment commander Col. Charles S. Robertson on the operational plane to completely clear and neutralize Go Noi Island and Dodge City and reopen Route 4 from Đại Lộc District to Điện Bàn District. A combined force of 10 Marine, ROKMC and ARVN infantry battalions supported by engineers would take part in the operation which was scheduled to commence on or about 27 May.[3]

Operation

The operation began on 26 May with Special Landing Force Alpha 1st Battalion, 26th Marines advancing east from Hill 37 towards Dodge City and 3rd Battalion, 5th Marines advancing east from Liberty Bridge (15°50′28″N 108°07′16″E / 15.841°N 108.121°E) towards Go Noi Island initially meeting little resistance but encountering more PAVN/VC fire and booby-traps as they penetrated further into the base areas. By 30 May the 2 battalions had secured their blocking positions west of the railway berm (15°51′04″N 108°11′38″E / 15.851°N 108.1938°E) having killed 16 PAVN/VC for the loss of 10 Marines killed.[3]:176

On 31 May the second phase began with the 37th Ranger Battalion to the west, the 1st Battalion, 1st Marines and 2nd Battalion, 1st Marines in the middle and the ARVN 1st Battalion, 51st Regiment and 2nd Battalion, 51st Regiment to the east, crossing the Song La Tho river to attack south through Dodge City while the ROKMC 2nd Marine Brigade occupied blocking positions to the east. The 5 battalions located numerous recently abandoned bunkers and fighting positions which were protected by mines and booby-traps which were methodically cleared, but at least initially their advance was unopposed. Due to the extreme temperatures (up to 115F) and the need to methodically search the area progress was relatively slow. On 2 June Company G was engaged by PAVN in a bunker complex and with tank support they overran this position killing 7 PAVN and capturing 1. Later that day a PAVN unit attempted to escape to the west but was unable to penetrate the 1/26 Marines and Ranger blocking positions and instead retreated south towards Go Noi Island. By 5 June the 5 Battalions had reached the Song Ky Lam river which separated Dodge City from Go Noi Island.[3]:175-8

With Dodge City now secured, Company A, 1st Engineer Battalion began repairs on Route 4. Meanwhile an intensive bombardment of Go Noi Island began with 750,000lbs of bombs dropped on the area. Special Landing Force Alpha was withdrawn from the operation and 1/1 Marines were moved by helicopter to the Liberty Bridge area.[3]:178

On 10 June the third phase began with an intensive artillery and air bombardment of eastern Go Noi Island following which the 1/1 Marine advanced east from the railroad berm and 22 CH-46s deployed the 2/1 Marines and the ROKMC 1st Battalion into landing zones on the southeast of Go Noi Island and they began to sweep north. On 11 June the ROKMC 1st Battalion located a large bunker complex filled with supplies and PAVN dead, similar discoveries were made by 1/1 Marines and 2/1 Marines as they continued their sweeps. PAVN resistance was light as they broke into small groups and attempted to escape to the south.[3]:178

On 13 June the Provisional Land-Clearing Company, comprising 10 Marine Eimco M64 tractors and 7 Army D7E bulldozers and with security provided by Company M 3/5 Marines began moving east across Go Noi Island, however its progress was delayed when two tanks were disabled by land mines. Once it began moving again the company methodically removed all vegetation, destroying 97 tunnels, over 2000 bunkers and fighting positions and 3.2km of trenches and flattening 8000 acres of land.[3]:270 On 15 June 3/5 Marines left the operation and 1/1 Marine took over security responsibility for the land clearing operation, while the ARVN 1st and 2nd Battalions moved east of Dodge City to sweep the area around Route 1.[3]:178-9

On 19 June Companies B and C 1/1 Marines began a sweep of western Go Noi Island, but their advance was soon delayed by numerous mines and booby-traps. On 21 June 1/1 Marines left the operation and the sweep was taken over by the 2/1 Marines who suffered a steady toll of dead and wounded from mines and booby-traps.[3]:179-80 On 27 June 1/1 Marines conducted a sweep of northern Dodge City finding some PAVN/VC killed in the earlier operation but meeting minimal opposition. At the end of June Route 4 was reopened to traffic.[3]:181-2

MG Simpson decided that eastern Go Noi Island should be permanently occupied and construction began on 2 firebases, one for the ARVN 3rd Battalion, 51st Regiment and one for the ROKMC 1st Battalion.[3]:182

In early July US intelligence indicated that a PAVN/VC unit had returned to Dodge City and a battalion sized cordon of the village of Tay Bang An (15°53′42″N 108°12′36″E / 15.895°N 108.210°E) was planned. On 14 July as CH-46s inserted the 2/1 Marines into 4 landing zones around Tay Bang An they came under fire damaging 7 helicopters. The Marines gradually tightened the cordon around Tay Bang An, engaging in small skirmishes with PAVN/VC, eventually killing 20 and capturing 14 by the end of the operation on 17 July.[3]:182-3

On 20 July the land-clearing operations on western Go Noi Island were completed. PAVN/VC losses to this point were 734 killed and 55 captured while Marine losses were 57 killed.[3]:184

In response to renewed PAVN/VC activity in the Dodge City area a fourth phase began on 21 July with 1/1 Marines searching the southwest of Dodge City triggering numerous mines and boob-traps but encountering no PAVN/VC in the 3 day sweep.[3]:184-5

On 25 July a patrol by Company L mounted on LVT-5s in western Go Noi Island hit a land mine killing 3 Marines. Throughout August and September the Marines, ARVN and ROKMC continued their sweeps of Go Noi Island and Dodge City encountering few PAVN/VC.[3]:185-6

On 11 October the final phase of the operation began with 1/1 Marines again sweeping Dodge City encountering only scattered pockets of PAVN/VC.[3]:186

Aftermath

Operation Pipestone Canyon concluded on 7 November, the Marines had lost 71 killed and the PAVN/VC 852 killed and 58 captured. The operation was regarded as a success as the PAVN/VC had been driven from Dodge City and Go Noi Island (which had been completely transformed during the operation) and Route 4 had been successfully reopened.[3]:187

Gallery

Marines Move Through Dodge City, 1969 (20118593563) (cropped)

Marines move through Dodge City

Marines Make Calculations for Plotting Mortars, 1969 (20551538458) (cropped)

2/1 Marines plot mortar fire

Artillery Support, 1969 (20116967314) (cropped)

11th Marines provide artillery support

Robert Stewart and William Carter Get Some Sleep, 1969 (20118577093) (cropped)

Marines get some rest

Sea Knight Helicopters, 1969 (20739557355) (cropped)

HMM-263 CH-46s approach Go Noi Island

Carl Witherspoon Cleans His M-16 Rifle, 1969 (20730228222) (cropped)

A Marine cleans his M16 rifle

Marines Assist Wounded Comrades, 1969 (20713302416) (cropped)

Marine wounded are evacuated

Marines with a Mechanical Mule, 1969 (20551561950) (cropped)

An M274 "Mechanical Mule" moves across rough terrain in Dodge City

Tanks from B Company, 1st Tank Battalion, 1969 (20746448591) (cropped)

M48s from Company B 1st Tank Battalion support 2/1 Marines

Notes

 This article incorporates public domain material from websites or documents of the United States Marine Corps.

  1. ^ Kelley, Michael (2002). Where we were in Vietnam. Hellgate Press. pp. 5–150. ISBN 978-1555716257.
  2. ^ a b Shulimson, Jack (1997). U.S. Marines in Vietnam: 1968 The Defining Year. History and Museums Division, Headquarters, U.S. Marine Corps. p. 328. ISBN 0160491258.
  3. ^ a b c d e f g h i j k l m n o p q Smith, Charles (1988). U.S. Marines in Vietnam: High Mobility and Standdown 1969. History and Museums Division, Headquarters, U.S. Marine Corps. p. 175. ISBN 978-1494287627.
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