Battle of the Iron Triangle ending a bitter four-month struggle. Following the withdrawal from Base 82 COSVN organized a new corps headquarters in the Tay Ninh- Binh Long region and designated it the 301st Corps. This corps would soon direct the combat operations of the 7th and 9th NVA Divisions, separate regiments, and additional formations already en route from North Vietnam. Meanwhile General Thuần decided to rest the tired troops of the 5th Division and turned his attention to sending his 25th Division to clear out the PAVN bases in the Ho Bo area west of the Iron Triangle. The ARVN defenses around An Dien
Battle of the Iron Triangle 7 to An Dien () on the Thi Thinh River opposite Bến Cát. Each of these outposts, including Base 82 (), which was midway between Rach Bap and An Dien, was manned by a company of the 321st Regional Force (RF) Battalion. Another country road passed by the Rach Bap outpost, local Route 14, which generally paralleled the Saigon River from Tri Tam, through Rach Bap, and veered to the southeast through the Triangle, crossing the Thi Thinh River before it joined Highway 13 north of Phú Cường. The PAVN had blown the bridge on Route 14 over the Thi