Operation Junction City

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Operation Junction City
Part of the Vietnam War

Cedar Falls/Junction City area of operations
Date22 February – 14 May 1967
Result Inconclusive[1][2][3]
 United States Viet Cong
Vietnam North Vietnam
Commanders and leaders
Jonathan Seaman
Bruce Palmer Jr.
Hoàng Văn Thái
Lê Đức Anh
Units involved
1st Infantry Division
25th Infantry Division
173rd Airborne Brigade
11th Armored Cavalry Regiment
1st Brigade, 9th Infantry Division

9th Division

30,000[4] ~15,000[5]
Casualties and losses
US report:
282 killed
1,576 wounded
24 tanks and armored vehicles destroyed
12 trucks destroyed
4 helicopters destroyed
5 howitzers destroyed[6]
PAVN claim:
13,500 killed or wounded
800 armored vehicles and truck destroyed or damaged
119 howitzers and mortars destroyed or damaged
US claim:
2,728 killed
34 captured
139 deserted
491 individual and 100 crew-served weapons recovered[6]: 150–1 
PAVN report:
255 killed
1,275 wounded, captured or deserted[5]

Operation Junction City was an 82-day military operation conducted by United States and Republic of Vietnam (RVN or South Vietnam) forces begun on 22 February 1967 during the Vietnam War. It was the first U.S. combat airborne operation since the Korean War and one of the largest Airmobile operations of the war.[7]


The stated aim of the almost three-month operation involving the equivalent of nearly three divisions of U.S. troops was to locate the elusive 'headquarters' of the Communist uprising in South Vietnam, the Central Office of South Vietnam (COSVN). By some accounts of U.S. analysts at the time, such a headquarters was believed to be almost a "mini-Pentagon", complete with typists, file cabinets, and staff workers with a large guard force. After the end of the war, the actual headquarters was revealed by Viet Cong (VC) archives to be a small and mobile group of people, often sheltering in ad hoc facilities and at one point escaping an errant bombing by some hundreds of meters.

Junction City's grand tactical plan was a "hammer and anvil" tactic, with airborne forces "flushing out" the VC headquarters, driving it against a prepared "anvil" of other forces. The U.S. forces included most of the 1st Infantry Division and the 25th Infantry Division including the 196th Light Infantry Brigade, the airborne troops of the 173rd Airborne Brigade and large armored elements of the 11th Armored Cavalry Regiment (11th ACR).


II Field Force, Vietnam started the operation on 22 February 1967 (while Operation Cedar Falls was winding down). The initial operation was carried out by the 1st (commanded by Major General William E. DePuy) and the 25th (commanded by Major General Frederick C. Weyand) infantry divisions, who led their forces to the north of the operational area to build the "anvil" on which the VC 9th Division would be crushed. At the same time as the movement of infantry (eight battalions with 249 helicopters) 845 paratroopers of the 2nd Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade conducted the only mass combat jump of the war and the largest since the Korean War.[6]: 101 [8]

At first, the operations appeared to be succeeding, objectives were reached without encountering great resistance and on February 23, the mechanized forces 11th ACR and the 2nd Brigade, 25th Infantry Division, the "hammer" of armor struck against the '"anvil" of the infantry and airborne positioned north and west, giving the VC forces seemingly no chance to escape. The PAVN claim that on the first day of the operation they killed almost 200 U.S. troops, destroyed 16 armored vehicles and shot down 16 aircraft.[9]: 198  The VC, highly mobile and elusive, with information sources deep in the South Vietnamese bureaucracy, had already moved their headquarters to Cambodia and launched several attacks to inflict losses and wear down the Americans. On February 28 and March 10 there were engagements with U.S. forces at the Battle of Prek Klok I and the Battle of Prek Klok II where the US, supported by powerful air strikes and massive artillery support repulsed VC attacks, but the strategic result was disappointing.

On 18 March 1967, General Bruce Palmer Jr., new commander of II Field Force, Vietnam, after General Seaman, launched the second phase of Junction City, this time directly to the east by the mechanized divisions, the 1st Infantry Division and 11th ACR, reinforced this time from the 1st Brigade of the 9th Infantry Division. This maneuver gave rise to the toughest battle of the operation, the March 19 Battle of Ap Bau Bang II, where the VC 273rd Regiment put into difficulties the American armored cavalry, before being forced to retire by a huge amount of firepower.

The VC launched two more attacks in force, on March 21 and in Ap Gu on April 1, against the 1st and the 25th Infantry Division, both assaults were bloodily repulsed and the VC 9th Division came out seriously weakened, though still able to fight or retreat to safety in areas adjacent to the Cambodian border. On April 16, the U.S. command of II Field Force, in agreement with the MACV, decided to continue operations with a third phase of Operation Junction City. Until May 14, certain units of the 25th Infantry Division undertook long and exhausting searches, advancing in the bush, raking villages, and retrieving large amounts of materiel, but with little contact with VC units, which had cautiously moved to a defensive footing.


The US infantry enjoyed advantages in mechanization over the Viet Cong forces encountered, including the M113 and in certain locales, full battle tanks
Air drop of supplies in Operation Junction City

Tay Ninh Province was picked over thoroughly and VC forces suffered significant losses, including large amounts of material captured: 810 tonnes of rice, 600 tonnes of small arms, 500,000 pages of documents. The American losses were not negligible, however, amounting to nearly 300 dead and over 1,500 injured.

According to calculations by the American command, the VC 9th Division was seriously weakened by the operations, suffering the loss of 2,728 killed, 34 captured men and 139 deserters. 100 crew-served weapons and 491 individual weapons were captured.[10] The Vietnam Ministry of Defense in April 2017 claimed that they had suffered casualties of 10.2% (1275) of their total strength (15,000 men), with 1.7% (255) of total strength killed.[5]

After the operations, the American forces were recalled to other areas of operation, and the country which was supposed to be in the firm control of the South Vietnamese government soon fell prey again to infiltration by the VC forces when they returned from their sanctuaries in Cambodia.

Allied intelligence later learned that, as a result of the operation, the VC moved most of their main force units across the border into Cambodia, rather than stationing them in South Vietnam where they were more vulnerable to attack. The border sanctuaries in Cambodia which had previously been logistical areas were expanded dramatically, creating further tension between Cambodia and South Vietnam and its Allies.[11]

When American troops found, in some stores, 120 reels of film and logistical equipment for the printing of documents, the command of MACV believed they had finally found the famous COSVN. However, the reality was very different. The mobile headquarters, commanded by some mysterious and famous characters, such as generals Thanh, Tran Van Tran and Do, had quickly retreated to Cambodia, maintaining its operations and confounding the hopes of the U.S. strategic planners.

With a huge consumption of resources and equipment, including 366,000 rounds of artillery and 3,235 tons of bombs, the American forces had inflicted losses on the communist forces and demonstrated the ability of airborne forces and even mechanized forces (also useful in impervious territory). Despite the tactical results, Junction City on an operational level didn't accomplish the most important objective, and failed to yield any long-term strategic leverage.[7][1]: 105 


  1. ^ a b Willbanks, James H. (2013). Vietnam War: The Essential Reference Guide Gale virtual reference library. ABC-CLIO. p. 105. ISBN 9781610691048.
  2. ^ Hess, Gary R. (1998). Vietnam and the United States: Origins and Legacy of War: Volume 7 of Twayne's international history series. Twayne Publishers. p. 96. ISBN 9780805716764.
  3. ^ Turley, William S. (2008). The Second Indochina War: A Concise Political and Military History. Rowman & Littlefield Publishers. p. 114. ISBN 9780742557451.
  4. ^ "Battlefield:Vietnam | Timeline". www.pbs.org.
  5. ^ a b c "Bảo đảm Hậu cần chiến dịch Bắc Tây Ninh đánh bại cuộc hành quân Gian- Xơn–Xi– ty của Mỹ - Ngụy". Quân đội nhân dân. 19 April 2017. Retrieved 10 October 2021.
  6. ^ a b c Rogers, Bernard (1974). Vietnam Studies Cedar Falls-Junction City A Turning Point. Department of the Army. ISBN 978-1931641890.Public Domain This article incorporates text from this source, which is in the public domain.: 151 
  7. ^ a b Whitney, Catherine (2009). Soldiers Once: My Brother and the Lost Dreams of America's Veterans. Da Capo Press. pp. 53–54.
  8. ^ MacGarrigle, George (1998). Combat Operations: Taking the Offensive, October 1966 to October 1967. US Army Center of Military History. p. 115. ISBN 9780160495403.Public Domain This article incorporates text from this source, which is in the public domain.
  9. ^ Military History Institute of Vietnam (2002). Victory in Vietnam: A History of the People's Army of Vietnam, 1954–1975. trans. Pribbenow, Merle. University of Kansas Press. ISBN 0-7006-1175-4.
  10. ^ "Data" (PDF). www.dtic.mil. Archived (PDF) from the original on May 13, 2014. Retrieved 2020-04-25.
  11. ^ Lipsman, Samuel; Doyle, Edward (1984). Fighting for Time (The Vietnam Experience). Boston Publishing Company. p. 128. ISBN 9780939526079.

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