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 sent the 141st Regiment, 7th Division south from its position along Highway 13, north of Lai Khê, to reinforce the 9th Division north of Base 82. The 9th Division meanwhile began shifting the 272nd Regiment north from the southern part of the Iron Triangle to assist in the defense of Base 82 and Rach Bap. The summer monsoon had arrived in Bình Dương Province and rains and low cloud cover further reduced the effectiveness of RVNAF support for the attack. A dense rubber plantation northwest of Base 82 provided excellent concealment for supporting defensive positions and observation of local Route