Long Binh Post was located on the east of Đồng Nai river, 20 km northeast from Saigon. The base functioned as a U.S. Army base, logistics center, and major command headquarters for United States Army Vietnam. Long Binh Post was 7 km southeast from Biên Hòa Air Base. Long Binh Post was also unofficially known as "Long Binh Junction, influenced by the widely used initials of then-President Lyndon B. Johnson. By mid-1967, United States Army, Vietnam, 1st Logistical Command and many other Army units dispersed in Saigon were moved to Long Binh Post to resolve centralization, security, and troop billeting issues. Long Binh Post was a sprawling logistics facility and the largest U.S. Army base in Vietnam, with a peak of 60,000 personnel in 1969. The Viet Cong attacked the Long Binh ammunition supply point on 4 February 1967 destroying at least 15,000 high explosive 155 mm artillery projectiles. The base was attacked again during the Tet Offensive as well as 1969. Following the Tet Offensive attacks, over a period of two weeks, the 159th Engineer Group utilized the assets of all four of its construction battalions in constructing the Long Binh Post perimeter defense system which consisted of 19,200 meters of double row, triple concertina fence, 19,000 meters of access road, 77 firing bunkers and 16 twenty-two man reserve force bunkers.
Major units
The II Field Force, 18th Military Police Brigade, 199th Light Infantry Brigade, 44th Medical Brigade and the 93rd and 24th Evacuation Hospitals were located on Long Binh Post. Logistics was provided by the 266th Supply and Service Battalion which provided graves registration; clothing and equipment; petroleum, oil, and lubricants ; and construction supplies for the III Corps Area in Vietnam. Another unit was the 90th Replacement Battalion, a first stop for newly arrived U.S. Army enlisted personnel, who were then permanently assigned to other units in Vietnam. Long Binh Post included the Long Binh Stockade, a U.S. Army prison, from 1966 to the 1970s also known unofficially as "LBJ" or "Long Binh Jail" The 1st Aviation Brigade was headquartered at Sanford Army Airfield on the post.
The area formerly occupied by the Long Binh post is now Long Bình ward, which is largely given over to industrial use, known as Long Binh Techno Park and a shopping complex.
