Key Facts
- Dates
- 25 October – 4 November 1950
- Duration
- 11 days
- Chinese campaign
- First Phase Campaign
- US unit encircled
- 8th Cavalry Regiment, 1–2 November 1950
- Key loss
- Most heavy equipment of 8th Cavalry Regiment
Strategic Narrative Overview
Beginning on 25 October 1950, PVA forces repeatedly attacked the ROK 1st Infantry Division near Unsan, catching UN troops off guard. On the night of 1–2 November, PVA units encircled the US 8th Cavalry Regiment. The regiment fought its way out of the encirclement but suffered significant losses, abandoning most of its heavy equipment in the process. The engagements demonstrated the PVA's ability to mass forces covertly and strike with surprise.
01 / The Origins
By late October 1950, United Nations forces under US command had pushed deep into North Korea following the Inchon landing and the collapse of North Korean resistance. China, alarmed by UNC forces approaching the Yalu River, secretly deployed the People's Volunteer Army across the border. As part of its First Phase Campaign, the PVA aimed to halt the UN advance and strike before UN commanders recognized the scale of Chinese intervention.
03 / The Outcome
The battle ended around 4 November 1950 with the PVA withdrawing after inflicting heavy losses on UN forces. The US 8th Cavalry Regiment escaped encirclement but at great cost in materiel. The engagement served as a stark warning of large-scale Chinese involvement in the Korean War, prompting a reassessment of UN strategy and leading to General MacArthur acknowledging a fundamentally changed military situation on the peninsula.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.