Operation Cedar Falls

Operation Cedar Falls. It was a major military campaign conducted by United States and Army of the Republic of Vietnam forces during the Vietnam War in January 1967. The operation targeted the Iron Triangle, a longstanding communist stronghold northwest of Saigon. It represented the first large-scale multidivisional offensive and employed a "hammer and anvil" strategy to clear and destroy the base area.

Background

For decades, the dense jungle and tunnel complex of the Iron Triangle had served as a critical sanctuary and headquarters for Viet Cong forces. Located between the Saigon River and the Thi Tinh River, this area was a hub for the National Liberation Front and housed key installations like the Central Office for South Vietnam. Previous smaller operations, such as those during Operation Attleboro, had failed to neutralize the region. The persistent threat it posed to the capital, Saigon, and major bases like Bien Hoa Air Base, compelled Military Assistance Command, Vietnam to plan a decisive, large-scale assault to eliminate this infrastructure.

Planning and forces

Planned by II Field Force, Vietnam commander Lieutenant General Jonathan O. Seaman, the operation involved over 30,000 troops from multiple U.S. and ARVN units. The core concept was a massive "hammer and anvil" encirclement, with forces from the 1st Infantry Division and the 25th Infantry Division forming the northern hammer. The southern anvil consisted of the 11th Armored Cavalry Regiment, the 196th Light Infantry Brigade, and the 173rd Airborne Brigade. The ARVN 5th Division, under Colonel Nguyễn Văn Hiếu, also participated. Preparations included extensive aerial reconnaissance by the United States Air Force and psychological operations to warn civilians.

The operation

The operation commenced on 8 January 1967 with the 1st Infantry Division and 25th Infantry Division driving south into the Iron Triangle. Simultaneously, the 11th Armored Cavalry Regiment and airborne units pushed north to seal the area. A key early action was the assault on the village of Ben Suc, which was evacuated and completely leveled by engineers. Troops discovered and destroyed an extensive network of tunnels, including part of the Củ Chi tunnels, along with vast quantities of supplies, workshops, and documents. While major Viet Cong units like those under Trần Văn Trà largely avoided direct engagement, numerous bunker and tunnel complexes were cleared in intense small-unit combat.

Aftermath and assessment

Militarily, the operation was declared a success, with over 750 enemy casualties reported and massive logistical damage inflicted. The Iron Triangle was temporarily cleared and extensively defoliated by Agent Orange from Operation Ranch Hand. However, the strategic impact was limited. Most communist forces, including leadership from the Central Office for South Vietnam, eluded capture by fleeing into Cambodia or adjacent areas like the Ho Bo Woods. The destruction of Ben Suc and displacement of thousands of civilians generated significant negative publicity. The operation demonstrated the difficulty of achieving lasting results against a guerrilla force with secure sanctuaries, a challenge later seen in operations like Operation Junction City.

Legacy

Operation Cedar Falls is historically significant as the largest single offensive of the Vietnam War up to that point and a prime example of U.S. "search and destroy" doctrine. It highlighted the tactical effectiveness of large-scale sweeps but also exposed their strategic limitations in a counterinsurgency. The operation's methods influenced subsequent campaigns in the war and became a case study in military literature. The events were documented by journalists including Jonathan Schell, whose reports in *The New Yorker* brought attention to the war's destructive aspects. The area later saw further conflict during the 1975 Spring Offensive. Category:Vietnam War operations and battles of 1967 Category:Battles and operations of the Vietnam War involving the United States Category:January 1967 events in Asia