Key Facts
- Duration
- 12 days (9–21 April 1975)
- Key ARVN unit
- 18th Infantry Division
- PAVN attacking force
- 4th Army Corps
- Saigon fell
- 30 April 1975, nine days after Xuân Lộc
- President Thiệu resigned
- 21 April 1975, same day as ARVN withdrawal
Strategic Narrative Overview
From 9 April 1975, the ARVN 18th Infantry Division under Brigadier General Lê Minh Đảo defended Xuân Lộc against the PAVN 4th Army Corps. South Vietnamese forces initially repulsed early PAVN assaults, compelling attackers to revise their tactics. Despite fierce resistance, PAVN forces gradually encircled the town, cutting off supply and reinforcement routes. By 19 April, with units badly mauled and the town nearly isolated, ARVN commanders ordered a withdrawal, ending organized resistance at the crossroads.
01 / The Origins
By early 1975, North Vietnamese (PAVN) forces had swept through South Vietnam's northern provinces nearly unopposed. The ARVN II Corps was destroyed in the Central Highlands, and cities including Huế and Da Nang fell without sustained resistance. These catastrophic losses undermined President Nguyễn Văn Thiệu's authority and left Saigon exposed. Xuân Lộc, a strategic crossroads in Biên Hòa Province, became the last defensible position east of the capital and the focus of South Vietnam's final military effort.
03 / The Outcome
The fall of Xuân Lộc on 21 April 1975 coincided with President Thiệu's resignation. Surviving ARVN elements—remnants of the 18th Division, Marine, Airborne, and Ranger units—conducted a nine-day fighting retreat to Saigon. On 30 April 1975, PAVN armored columns breached the gates of South Vietnam's Presidential Palace, ending the Vietnam War and the existence of South Vietnam as an independent state.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Hoàng Cầm.
Side B
1 belligerent
Lê Minh Đảo.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.