Battle of the Iron Triangle Battle of the Iron Triangle The Battle of the Iron Triangle took place from 16 May to 20 November 1974, when the People's Army of Vietnam (PAVN) 9th Division captured Rach Bap and An Dien The Army of the Republic of Vietnam (ARVN) regained the lost towns in a series of costly counterattacks. The Iron Triangle was an important strategic location, bounded on the north by the jungle and overgrown rubber plantations of the Long Nguyen Secret Zone, on the west by the Saigon River and on the east by the smaller but unfordable obstacle of the Thi Thinh River.
Iron Triangle (Vietnam) or Viet Cong (NLF). The Location of the Iron Triangle was between the Saigon River on the west and the Tinh River on the east and bordering Route 13 about 25 miles (40 km) north of Saigon. The southern apex of the "triangle" was seven miles (11 km) from Phú Cường, the capital of Bình Dương Province. Its proximity to Saigon was both a reason for American and South Vietnamese efforts to eradicate it, as well as why it remained a crucial area for Communist forces to control. During the French war in Indochina, from 1946 to 1954, the Viet