Iron Triangle (Vietnam) Iron Triangle (Vietnam) The Iron Triangle (Vietnamese:"Tam Giác Sắt") was a area in the Bình Dương Province of Vietnam, so named due to it being a stronghold of Viet Minh activity during the war. The region was under control of the Viet Minh throughout the French war in Vietnam and continued to be so throughout the phase of American involvement in the Vietnam War, despite concerted efforts on the part of US and South Vietnamese forces to destabilize the region as a power base for their enemy, the communist North Vietnamese–sponsored and–directed South Vietnamese insurgent movement, the National Liberation Front
Battle of the Iron Triangle were clearing the road past the An Dien bridge. Working at night with flash lights to avoid PAVN observation and fire, they removed 38 antitank mines from the route of advance. Weakened by casualties, the 52nd Infantry made very little progress on 2 and 3 June, and the 43rd Regiment was still being blocked by the PAVN 272nd Regiment. Đảo then ordered his 48th Infantry across the Thi Thinh south of Bến Cát, to pass through the 52nd and take An Dien. While the PAVN artillery continued to pound ARVN positions, two battalions of the 48th crossed into the Iron