320th Division (Vietnam)

The 320th Division or Đồng Bằng Division (Vietnamese: Sư đoàn Đồng Bằng, Delta Division) is a formation and one of the six original "Steel and Iron Divisions" of the Vietnam People's Army. Initially, it comprised 48th Infantry Regiment (Thăng Long), 52nd Infantry Regiment (Tây Tiến) (later renamed Đông Biên), 64th Infantry Regiment (Quyết Thắng), 834rd Artillery Battalion and a anti-air artillery battalion.

During the Vietnam War it was a well trained division of the North Vietnamese Army that operated in the DMZ area of South Vietnam. The division battled U. S. Marines in and around Đông Hà and Leatherneck Square. One of the major battles the unit was involved in was the Battle of Dai Do northeast of Đông Hà. This battle was costly to both sides.

In 23 August 1965, General Staff ordered the division to split into 320A Division and 320B Division. Later in 1967, 320A (later renamed 320) moved to fight in the front in South Vietnam while 320B (later renamed 390) remained in Hanoi and became a training division.

Today it is part of the 3rd Corps (Vietnam People's Army).