Operation Manhattan was an operation conducted by the 1st and 2nd Brigades, 25th Infantry Division and the 3rd Brigade, 4th Infantry Division in the Ho Bo Woods/Bến Củi area, lasting from 23 April to 7 June 1967.:146
The operation commenced on 23 April. On 9 May 2nd Brigade, 25th Infantry Division withdrew from the operation and returned to Củ Chi Base Camp to prepare for Operation Kolekole. On 10 May 3rd Brigade, 4th Infantry Division withdrew from the operation and returned to Dầu Tiếng Base Camp to prepare for Operations Ahina and Operation Diamond Head. The 1st Brigade, 25th Infantry Division continued the operation, providing security for the 65th Engineer Battalion which used Rome plows to destroy VC fortifications when discovered.
Operation Manhattan officially concluded on 7 June, VC losses were 74 killed, with a further 99 estimated killed, 19 captured and three Chieu hoi. A total of 201 small arms and 18 crew-served weapons were captured.
The 11th Armored Cavalry Regiment ("Blackhorse Regiment") is a unit of the United States Army garrisoned at Fort Irwin, California. Although termed an armored cavalry regiment, it is being re-organized as a multi-component heavy brigade combat team. The regiment has served in the Philippine–American War, World War II, the Vietnam War, Cold War, Operation Desert Storm, and Operation Iraqi Freedom (Iraq War). The 11th ACR serves as the Opposing Force (OPFOR) for the Army and Marine task forces, and foreign military forces that train at the National Training Center.
The OPFOR trained U.S. Army forces in mechanized desert warfare following a Soviet-era style threat until June 2002, when the OPFOR and the 11th ACR changed to portraying an urban/asymmetrical warfare style of combat U.S. soldiers are facing in operations abroad. From June to December 2003, members of the 11th ACR deployed to Afghanistan, where they helped to develop and train the armor and mechanized infantry battalions of the Afghan National Army. These specialized units would defend the Afghan capital during the country's constitutional convention. In January 2004, the 11th ACR deployed to Iraq. The 11th ACR was not reorganized under the U.S. Army Combat Arms Regimental System, but has been reorganized under the U.S. Army Regimental System.1st Infantry Division (United States)
The 1st Infantry Division is a combined arms division of the United States Army, and is the oldest continuously serving in the Regular Army. It has seen continuous service since its organization in 1917 during World War I. It was officially nicknamed "The Big Red One" (abbreviated "BRO") after its shoulder patch and is also nicknamed "The Fighting First". However, the division has also received troop monikers of "The Big Dead One" and "The Bloody First" as puns on the respective officially sanctioned nicknames. It is currently based at Fort Riley, Kansas.4th Cavalry Regiment (United States)
The 4th Cavalry Regiment is a United States Army cavalry regiment, whose lineage is traced back to the mid-19th century. It was one of the most effective units of the Army against American Indians on the Texas frontier. Today, the regiment exists as separate squadrons within the U.S. Army. The 1st Squadron of the 4th Cavalry's official nickname is "Quarterhorse", which alludes to its 1/4 Cav designation. The 3rd Squadron of the 4th Cavalry's official nickname is "Raiders". Today, the "1st Squadron, 4th Cavalry", "2nd Squadron, 4th Cavalry", "4th Squadron, 4th Cavalry", and "6th Squadron, 4th Cavalry" are parts of the 1st Infantry Division, while the "3rd Squadron, 4th Cavalry" serves as part of the 25th Infantry Division. On 23 September 2009, the "4th Squadron, 4th Cavalry" officially stood up at Fort Riley, Kansas as part of the 1st "Devil" Brigade, 1st Infantry Division. On 28 March 2008, the "5th Squadron, 4th Cavalry" officially stood up at Fort Riley, Kansas as part of the 2nd "Dagger" Brigade, 1st Infantry Division. The 6th Squadron, 4th Cavalry served as part of the recently inactivated 1st Infantry Division, 3rd "Duke" Brigade, at Fort Knox, Kentucky.Boi Loi Woods
Boi Loi Woods are located 25km northwest of Củ Chi District and 22km west of Bến Cát District in Hậu Nghĩa Province. The woods were an important base and staging area for the Viet Cong (VC) and later the PAVN.
US and Army of the Republic of Vietnam (ARVN) forces conducted frequent operations against PAVN and VC forces in the woods including Operation Mastiff (21-25 February 1966), Operation Wahiawa (16-30 May 1966), Operation Sunset Beach (2 September-11 October 1966), Operation Manhattan (23 April-7 June 1967), however none of these operations permanently cleared the PAVN/VC and the last attempt by the ARVN to penetrate the area occurred during the War of the flags (25 January-3 February 1973).List of allied military operations of the Vietnam War (1967)
This article is a list of known military operations of the Vietnam War in 1967, conducted by the armed forces of the Republic of Vietnam, the United States and their allies.List of allied military operations of the Vietnam War (M–S)
This article is a list of known military operations of the Vietnam War, a war fought by the United States to try to stop communism in Southeast Asia, conducted by the armed forces of the Republic of Vietnam, the United States and allies consisting of Australia, New Zealand, Thailand, South Korea, and the Philippines. This is not a complete list. Operations are currently listed alphabetically, but are being progressively reorganised as a chronology.Operation Kunia
Operation Kunia was an operation conducted by the 1st Brigade, 25th Infantry Division in the Ho Bo Woods, lasting from 15 September to 10 November 1967.
Easter Offensive (1972)
Post-Paris Peace Accords (1973–1974)