Battle of the Twin Tunnels
1951 battle
The Battle of the Twin Tunnels (French: Bataille de Twin-Tunnels) took place during the Korean War. In which the UN forces inflicted heavy casualties on the People's Volunteer Army (PVA). The "Twin Tunnels" refer to a series of railroad tunnels along the Central Line in eastern Jije-myeon, Yangpyeong County, Gyeonggi Province, South Korea.
A series of battles, including Twin Tunnels, the Battle of Chipyong-ni and the Third Battle of Wonju between January and February 1951 marked a turning point in many ways for the entire Korean War.
Background
When U.S. X Corps commander General Edward Almond received a request from Eighth Army commander General Matthew Ridgway on 30 January for a X Corps - Republic of Korea Army (ROK) III Corps operation similar to Operation Thunderbolt, he was in the process of extending X Corps’ diversionary effort ordered earlier by Ridgway. Having achieved the Yoju-Wonju-Yongwol line against little opposition, Almond was planning a strong combat reconnaissance 15 miles (24 km) above this line. Searching that deep at Corps' center and right could apply pressure on the Korean People's Army (KPA) V and II Corps concentrated above Hoengsong and Pyongchang. At the same time, the U.S. 2nd Infantry Division, due to move north along the Corps' left boundary as far as Chip’yong-ni, 8 miles (13 km) east of Yangp’yong, could protect the right flank of IX Corps as Operation Thunderbolt continued.
In the recent course of protecting IX Corps' right, a joint motorized patrol from the 2nd and 24th Infantry Divisions on 29 January had moved north out of the Yoju area on the east side of the Han River to a pair of railroad tunnels and a connecting bridge standing east and west athwart a narrow valley 4 miles (6.4 km) south of Chip’yong-ni. PVA in the high ground overlooking the tunnels quickly cut the patrol's route of withdrawal, forced the group into hasty defenses on the nearest rises of ground, and opened a series of assaults.
“Battle of the Twin Tunnels” enters the record as 1951 battle. Crown Archives preserves that source wording while asking what Battle, Twin and Tunnels can confirm, complicate or overturn.
Why this record matters
“Battle of the Twin Tunnels” is worth following because a concise public description often conceals a longer documentary argument. Here, Battle, Twin and Tunnels provides the most credible route into that argument.
The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Aug 30, 2026. The linked authority identifier is Q4873032. The Library of Congress control number is sh2002001516. Authority coordinates are 37.443, 127.672. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1951.
Institutional narratives can privilege the records that survived while minimizing voices that were never formally collected. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.
- Event chronology
- Institutional context
- Locating named record creators
Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.
Three-step research path
- Establish the record: confirm the title “Battle of the Twin Tunnels”, its source revision and the description used here.
- Expand the search: follow Battle of the Twin Tunnels primary sources, Battle of the Twin Tunnels archive and Battle research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Battle of the Twin Tunnels”?
- Which voices are present, absent or mediated by the institution?
- What chronology connects this entry to wider political or social change?
Search terms from this dossier
This entry incorporates text from “Battle of the Twin Tunnels” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.