Operation Attleboro

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This article is about the operation in South Vietnam. For the operation in Iraq, see Operation Attleboro (Iraq).
Operation Attleboro
Part of the Vietnam War
US Infantry Deploy from UH-1D Vietnam.jpg
Infantrymen attacking out of a UH-1D helicopter during Operation Attleboro.
Date September 14 – November 24, 1966
Location Northwest of Dau Tieng, South Vietnam
Result US tactical victory
Viet Cong strategic victory
Flag of the United States.svg United States
Flag of South Vietnam.svg South Vietnam
FNL Flag.svg Viet Cong
Flag of Vietnam.svg North Vietnam
Commanders and leaders
Flag of the United States.svg Guy S. Meloy
William E. DePuy
Units involved
United States 196th Light Infantry Brigade
1st Infantry Division
4th Infantry Division
27th Infantry Regiment
FNL Flag.svg 9th Vietcong Division
Vietnam 101st NVA Regiment
Casualties and losses
155 killed and 494 wounded US report: 2,130 killed
44 POW

Operation Attleboro was a Vietnam War search and destroy operation by the 196th Light Infantry Brigade. The operation was named after Attleboro, Massachusetts, where the brigade had been formed. Operation Attleboro turned out to be the largest series of air mobile operations to that time, involving all or elements of the 196th Light Infantry Brigade, 25th Division, 1st Infantry Division, and a brigade of the 4th Division, as well as numerous Army of the Republic of Vietnam and Regional Forces/Popular Forces and Nungs. In the end, the operation became a corps operation commanded by II Field Forces.


The operation was divided into two phases. While the initial fighting was light, in late October US forces, consisting of the 196th Light Infantry Brigade and the 1st Battalion of the 27th Infantry Regiment, encountered the 9th Viet Cong Division, resulting in a major three-day battle. Fighting was then taken over by the 1st Infantry Division.

The most significant fighting occurred when Viet Cong forces assaulted the US perimeter at Suoi Da on November 8. The assault was defeated by artillery and air strikes. Afterwards, a large Viet Cong base camp was detected. It was one of the largest hauls to date in the war, with the American forces seizing two million pounds of rice; 116 transportation bicycles; approximately 25,000 Chinese-made hand grenades (many containing tear gas); 481 M18 Claymore anti-personnel mines; 80 rocket launchers; 25 machine guns; myriad number of pistols; rifles like AKMs and AK-47s; clothing; tobacco; miscellaneous foods like cooking oil, salt and fish; and bountiful gallons of petroleum.


US intelligence later estimated VC/PAVN losses during Operation Attleboro as 2,130 killed, 900 wounded, and over 200 missing or captured. Allied losses totaled 155 killed and 494 wounded.[1]

US military spokesmen claimed that the most significant result of Operation Attleboro was the severe blow struck against the communists' supply system. In fact, however, the operation failed to eradicate the Viet Cong's political domination in Tay Ninh Province, as they quietly returned to the area from their sanctuaries in Cambodia just after the American withdrawal.[2]


  1. ^ Tucker 2011, p. 81.
  2. ^ Daddis 2011, p. 7.