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.
Vaal Triangle Vaal Triangle The Vaal Triangle is a triangular area formed by Vereeniging, Vanderbijlpark and Sasolburg - together they comprise a substantial urban complex in South Africa about 60 km south of Johannesburg. Meyerton, just north of Vereeniging, is also generally included in the complex, and residents of Sharpeville, Boipatong, Bophelong, the greater Sebokeng area (includingEvaton, Orange Farm, etc.), Heidelberg, Zamdela,((Deneysville)) and Potchefstroom also generally tend to consider themselves to live in the Vaal Triangle. The area straddles the Vaal River and is a major industrial region, which is home to former Iron and Steel Corporation Iscor, now ArcelorMittal South Africa