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Operation Fairfax
Part of Vietnam War
DateNovember 1966 - 15 December 1967
LocationGia Định Province, South Vietnam
Result Inconclusive
United States
 South Vietnam
Viet Cong
Commanders and leaders
United States BG Charles Wolcott Ryder Jr.
United States BG John F. Freund
United States BG Robert C. Forbes
South Vietnam Gen Lê Nguyên Khang
United States 199th Infantry Brigade
South Vietnam 5th Ranger Group
165A Regiment
Casualties and losses
1200 killed or captured

Operation Fairfax was a joint counterinsurgency/pacification operation conducted by the II Field Force, Vietnam and the Army of the Republic of Vietnam (ARVN) in Gia Định Province, near Saigon lasting from November 1966 to 15 December 1967.[1]


In October 1966 U.S. intelligence estimated that the Viet Cong (VC) in Gia Định Province, fielded eight battalions, each of 2-300 members known collectively as the 165A "Capital Liberation" Regiment. In Bình Chánh District the VC had overrun a police station and repeatedly cut roads in the area. Concerned by the deteriorating security situation around the capital, in November 1966 COMUSMACV General William Westmoreland proposed a joint U.S./ARVN security operation to General Cao Văn Viên Chief of the Joint General Staff. The operational plan would pair U.S. and ARVN Battalions to conduct security operations in Bình Chánh, Nhà Bè and Thủ Đức Districts around Saigon. They would operate mostly at night, minimizing disruption to the civilian population and confronting the Viet Cong when they were most active. The units would set up population control checkpoints in coordination with the Police and establish joint military/Police security centers in each district to centralize the collection of intelligence.[1]:156–7

II Field Force, Vietnam would be responsible for the U.S. participation taking a battalion from the 1st Infantry Division and two from the 25th Infantry Division. The ARVN units would come from III Corps.[1]:157 It was expected that by February 1967 the Vietnamese would be able to take responsibility for the entire operation and U.S. units could be deployed elsewhere.[1]:158


The operation commenced in December and by the end of the month had claimed 235 VC killed or captured as compared to 15 in November, however despite a general improvement in security ambushes actually increased during this period.[1]:157

In January 1967 General Westmoreland ordered that the 199th Infantry Brigade commanded by BG Charles Ryder take over as the dedicated unit responsible for the operation. In February VC killed or captured increased to over 300.[1]:158

In March BG Ryder was promoted and replaced as commander of the 199th Brigade by BG John F. Freund, Westmoreland's former assistant and MACV training director who had close relationships with General Viên and National Police Chief General Nguyễn Ngọc Loan.[1]:158–9

In March and April security in the operational area appeared to improve, but this was regarded as illusory while the South Vietnamese Government continued to delay reforms and public works creating apathy among the populace who were open to the Viet Cong political agenda. Intelligence operations were having limited success in identifying and eliminating the Viet Cong political infrastructure.[1]:159

By June General Westmoreland was of the view that the ARVN and National Police had become too dependent on the U.S. to bear the burden of the operation and he advised General Viên that by the end of 1967 the 199th Brigade would be withdrawn from Gia Định Province. General Viên agreed with this change and was embarrassed that U.S. units had had to be responsible for the defense of the capital for so long. He ordered that the 5th Ranger Group take over ARVN responsibility for the operation.[1]:160

By July over 75 U.S./ARVN ambushes were being set up each night and bases had been established to interdict traffic on the Đồng Nai river. U.S. helicopter gunships sank an estimated 700 VC sampans during the course of the operation.[1]:160–1

In August BG Freund was wounded during an operation and command passed to BG Robert C. Forbes. BG Forbes regarded the Rangers as still being too dependent on the U.S. "buddy" units, but given their limited resources this was hardly surprising and he arranged to have more modern equipment delivered and U.S. advisers attached.[1]:161

On 24 September the pairing of U.S. and ARVN units was discontinued and the 199th Brigade and ARVN Rangers operated independently in different sectors, occasionally conducting combined operations.[1]:161


Operation Fairfax officially concluded on 15 December, VC losses were over 1200 killed or captured.[1]:162

While General Westmoreland regarded the operation as a limited success, he concluded that the integration of U.S. and ARVN units was counterproductive, reducing the ARVN to combat auxiliaries.[1]:162

While the operation had somewhat improved security in Gia Định Province, this was only temporary as the Viet Cong infrastructure had not been seriously disrupted and within 6 weeks of the end of the operation the Viet Cong were able to launch their Tet Offensive attacks on Saigon.[2]


 This article incorporates public domain material from websites or documents of the United States Army Center of Military History.

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 MacGarrigle, George (1998). Combat Operations: Taking the Offensive, October 1966 to October 1967. Government Printing Office. pp. 155–6. ISBN 9780160495403. 
  2. Oberdorfer, Don (1971). Tet!: The Turning Point in the Vietnam War. The Johns Hopkins University Press. p. 9. ISBN 0801867037. 

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