Tra Binh Dong (February 1967): one night in an isolated company base

2026-10-13 · 1967-02-14 – 1967-02-15

Overview (BLUF)

From the night of 14 February to the morning of 15 February 1967, 11th Company, 3rd Battalion, ROK 2nd Marine Brigade (Blue Dragon) was attacked by a regiment-sized VC/PAVN force at its company base on an isolated hill in Tra Bong District, Quang Ngai Province. The enemy breached the perimeter with bangalore torpedoes and flamethrowers, but the company restored its line by counterattack, and at daylight the enemy withdrew (sources 1, 2).

The battle shows three conditions for holding an isolated small-unit base: early warning, a reserve committed to fit the breach, and a link between outside fires and close-range fires. Enemy strength, the time of the attack and loss figures differ widely between accounts, however, and most company-level detail rests on single sources, so it needs careful reading (figure 3).

Background and Strategic Context

The Blue Dragon brigade arrived in Vietnam in autumn 1965, moved via Cam Ranh and Tuy Hoa, and in August 1966 shifted to Chu Lai under the operational control of the US III Marine Amphibious Force (source 3). Quang Ngai Province south of Chu Lai lies between the US Marine base and Quang Ngai City, and both enemy regulars and local forces were active there.

The brigade spread company bases across a wide area. 11th Company's base sat on a small hill apart from the rest of the brigade. This layout helps watch a wide area, but if the enemy concentrates on one base, outside reinforcement at night is unlikely. Wikipedia says a defector, a former enemy training-camp commander, warned of the attack beforehand (source 4; basis unconfirmed).

Terrain and Weather

The base was oval, with bunkers linked by trenches and thick wire laced with claymores around it (source 5; search summary only). The ground around the hill mixes low hills with paddies and marsh. The enemy hid in the woods around the base before closing in (source 4).

Wikipedia says fog that night kept AC-47 gunships out of the fight, leaving only artillery. This is not cited in the article, so it is treated as unconfirmed (source 4).

Forces and Dispositions

ROK: 11th Company, 3rd Battalion, 2nd Marine Brigade, reportedly about 290 strong (Korean sources cited by Wikipedia; unconfirmed). Three platoons shared the perimeter, with a listening post (LP) forward of 3rd Platoon (sources 2, 6). A US Marine 1st ANGLICO team was attached to link the company to artillery and air support (source 4).
Enemy: the US DoD Commemoration says "regiment-sized" (source 1). Wikipedia, citing Vietnamese sources, gives the 40th and 60th Battalions of the PAVN 1st (Ba Gia) Regiment, 2nd Division, plus one Quang Ngai local battalion (source 4). A figure of about 2,400 is widely repeated, but no primary source for it was found (source 2). This text uses "regiment-sized".

Course of the Action

Concept sketch of the Tra Binh Dong company base defence. Inside an oval perimeter on the hill it shows 1st, 2nd and 3rd Platoons and the CP and reserve, the LP to the north-west, the enemy main effort toward 3rd Platoon and supporting attacks from several sides, the breach in 3rd Platoon's sector, the reserve counterattack from the CP to the breach, the enemy mortars to the north-east and the fire-team sortie from 1st Platoon — Figure 1. Concept sketch of the company base defence. Base shape, platoon layout and attack directions follow the scenario and are not confirmed by sources; scale is fitted to the ~100 m sortie distance — our own work, based on sources 1, 2, 4 and 6

Timings differ between accounts. The DoD Commemoration gives 14–15 February, the Korean encyclopedia and Wikipedia dawn on the 15th, and Historynet the early hours of the 14th. The list below gives the order only (figure 2).

Warning and preparation (evening, 14 February): the company put an LP out beyond the wire. No other preparations are confirmed.
LP contact (before dawn, 15 February): the LP of 1st Squad, 3rd Platoon spotted an enemy company forming up to attack and raised the alarm. All but one of its roughly ten men became casualties (source 6).
Attack from all sides (pre-dawn): under mortar cover the enemy closed on the base from several directions at once (sources 4, 5).
Breach of 3rd Platoon's line and counterattack (pre-dawn): the enemy broke into 3rd Platoon's position with bangalore torpedoes and flamethrowers. Wikipedia says the enemy got inside the perimeter twice. The company retook the line by counterattack, with close fighting in the trenches (sources 1, 2, 4).
Enemy mortars silenced (before first light): the 1st Platoon leader is said to have taken a fire team about 100 m beyond the perimeter and silenced the enemy mortars with machine guns and grenades (source 2; single source).
Last push and withdrawal (first light to morning): the company repulsed a last enemy attack, and at daylight the enemy pulled back (sources 1, 2).

Flow chart of the six stages of the fight as boxes: warning and preparation at dusk, LP contact before dawn, attack from all sides, breach of 3rd Platoon's line and counterattack, enemy mortars silenced before first light, last push and withdrawal at first light. Box borders show whether two or more sources agree or the event rests on a single source, and tags give the decision point numbers used in the text — Figure 2. The night in sequence. Timings differ between sources, so only the order is shown. Solid borders mark events on which two or more sources agree; dashed borders mark single-source events — our own work, based on sources 1, 2, 4–6

Decision Point Analysis

Decision 1: Preparing after a warning (company commander, dusk on 14 February) A statement said an attack was planned, but it was unconfirmed and gave neither size nor timing. The options were (a) put LPs on the approaches and check the wire, (b) ask battalion for reinforcement and preplanned fires, (c) send spoiling patrols outside the base, or (d) keep the normal routine. What can be confirmed is the LP forward of 3rd Platoon. It spotted the enemy massing first and bought the company time to stand to. The price was nearly the whole squad. It shows that the time an LP buys and the risk its men carry have to be weighed together. The scenario's first two decisions sit here.

Decision 2: The breach and the reserve (company commander, pre-dawn on 15 February) While attacks came from several sides, the main effort could not be identified. Once 3rd Platoon's position was broken, the options were (a) pull back to an inner perimeter, (b) counterattack at once with the reserve, supported by close mortar fire and artillery, (c) call artillery onto the breach, or (d) hold in place until daylight. The company chose (b), apparently judging that the breach had to be sealed before the enemy settled in or the whole base would fall. The line was restored. Holding the reserve until the main effort showed appears to be what made the counterattack possible. One account says a ROK quick reaction company helped (source 3; unconfirmed).

Decision 3: Enemy mortars outside the wire (1st Platoon leader and company, before first light) Mortars just outside the perimeter kept pounding the base. The options were (a) counter-battery fire from supporting artillery, (b) a small sortie beyond the wire, or (c) accept the fire in the bunkers. According to Historynet, the 1st Platoon leader chose (b), silenced the mortars about 100 m out and came back to rally his platoon. It is a single source, and the reasons for the choice, such as doubts about the artillery's grid, are not confirmed. The scenario's mortar decision is built on this account.

Decision 4: How to attack, and when to leave (enemy commander) The enemy could (a) press from several sides while concentrating a main effort at one point, (b) mass on a single axis, or (c) surround the base and wait for a relief force. Its attack came closest to (a). Mortar cover and simultaneous attacks from several sides appear meant to delay the commitment of the company's reserve while bangalores and flamethrowers broke 3rd Platoon's front. The enemy sought a decision before daylight improved observation and fire support, and withdrew when the last push failed. The time limit of a night attack weighed on the attacker as well.

Lessons

Security and early warning (FM 3-90, defence): the more isolated the base, the more a security element such as an LP sets the time available to stand to. The value of the warning and the risk to the security element have to be planned together.
Use of the reserve: hold the reserve until the main effort shows, then seal the breach before the enemy settles in. That needs counterattack routes and close-range fires worked out in advance.
Fire support coordination: the ANGLICO team linked the company to US fires, but weather and darkness can shut out air support. Plan for fighting with artillery and company weapons alone.
Mission command (ADP 6-0): a platoon leader reading the situation and going after the mortars on his own is possible when the company commander's intent is shared.
Reading the record critically: press coverage and decorations soon after the battle gave rise to the "myth-making" label (sources 2, 4). Figures and detail need cross-checking against the official history and both sides' records.

Unresolved Questions

Enemy strength and units: accounts range from "regiment-sized" and about 2,400 to two battalions plus a local battalion, or two VC regiments (figure 3).
Time of the attack: given as the night of 13 February, the early hours of the 14th, or dawn on the 15th.
Location: most accounts give Tra Bong District, Quang Ngai Province; one gives Quang Nam Province (source 3).
Losses: the ROK official history records 15 ROK dead. ROK claims of enemy losses range from 242 to 246, and the Vietnamese side claims 420 ROK casualties. None is independently verified (source 4).
Fog preventing air support, the defector's warning and the details of the mortar sortie rest on single sources or are uncited.
The ROK official history (Vol. II) and the Marine Corps combat history could not be consulted, and the DoD Commemoration page now serves an unrelated site, so it was checked only through a search summary.

Table comparing enemy strength/units and time of attack across five accounts. US DoD Commemoration: regiment-sized, 14–15 Feb. Historynet: about 2,400, early hours of 14 Feb. Wikipedia: two PAVN battalions plus one local battalion, dawn on 15 Feb. Encyclopedia of Korean Culture: an enemy company in front of the LP, 15 Feb. Warfare History Network: two VC regiments, night of 13 Feb — Figure 3. Enemy strength and timing differ by account. Allied and Vietnamese records are mixed, so direct comparison is limited — our own work, based on sources 1, 2, 4–6

Want to command it yourself? Take over 11th Company in this battle's training scenario and fight the same night.

Sources

US DoD Vietnam War 50th Anniversary Commemoration, "South Korean Engagement Near Chu Lai" (timeline entry, public domain). https://vietnamwar50th.com/1966-1967_taking_the_offensive/South-Korean-Engagement-Near-Chu-Lai (accessed 2026-10-13; the domain now serves an unrelated site, checked via search summary)
Historynet, "Korea's Myth-Making Marines" (from Vietnam magazine, October 2008; posted 2018-06-07). https://www.historynet.com/koreas-myth-making-marines/ (accessed 2026-10-13)
Wikipedia, "2nd Marine Division (South Korea)" (cross-check). https://en.wikipedia.org/wiki/2nd_Marine_Division_(South_Korea) (accessed 2026-10-13)
Wikipedia, "Battle of Trà Bình" (cross-check; parts uncited). https://en.wikipedia.org/wiki/Battle_of_Tr%C3%A0_B%C3%ACnh (accessed 2026-10-13)
Warfare History Network, article on ROK Marines in Vietnam (search summary only; body 403). https://warfarehistorynetwork.com/?p=20536 (accessed 2026-10-13)
Academy of Korean Studies, Encyclopedia of Korean Culture, entry on the LP squad leader at Tra Binh Dong (cites the Marine Corps combat history). https://encykorea.aks.ac.kr/Article/E0052575 (accessed 2026-10-13)
U.S. Army, FM 3-90 Tactics, ADP 6-0 Mission Command. https://armypubs.army.mil/ (accessed 2026-10-13)
Wikimedia Commons, file page for the photo of Blue Dragon Marines digging in near Tuy Hoa (1966-02-02, public domain). https://commons.wikimedia.org/wiki/File:NARA_111-CCV-534-CC33521_ROK_Marines_digging_defensive_position_near_Tuy_Hoa_1966.jpg (accessed 2026-10-13)