Battle of Roi-Namur
E108531
The Battle of Roi-Namur was a World War II Pacific campaign engagement in early 1944 in which U.S. forces seized key Japanese-held islets in the Kwajalein Atoll of the Marshall Islands.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Battle of Roi-Namur canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T822835 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Battle of Roi-Namur Context triple: [4th Marine Division, notableBattle, Battle of Roi-Namur]
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A.
Battle of Mount Tumbledown
The Battle of Mount Tumbledown was a key night engagement in June 1982 during the Falklands War, in which British forces captured a strategically vital height overlooking Port Stanley from entrenched Argentine defenders, effectively sealing victory in the conflict.
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B.
Battle of Diamond Hill
The Battle of Diamond Hill was a major engagement of the Second Boer War in June 1900 near Pretoria, where British forces under Lord Roberts clashed with Boer commandos in an effort to break their defensive positions.
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C.
Battle of Konna
The Battle of Konna was a key 2013 clash in central Mali between Islamist militants and Malian–French forces that marked an early turning point in France’s Operation Serval intervention.
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D.
Battle of Kohima
The Battle of Kohima was a pivotal 1944 World War II engagement in northeast India where Allied forces halted the Japanese advance, marking a major turning point in the Burma campaign.
-
E.
Battle of Imphal
The Battle of Imphal was a pivotal 1944 World War II engagement in northeast India where Allied forces halted and decisively defeated the Japanese advance toward India.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Battle of Roi-Namur Target entity description: The Battle of Roi-Namur was a World War II Pacific campaign engagement in early 1944 in which U.S. forces seized key Japanese-held islets in the Kwajalein Atoll of the Marshall Islands.
-
A.
Battle of Mount Tumbledown
The Battle of Mount Tumbledown was a key night engagement in June 1982 during the Falklands War, in which British forces captured a strategically vital height overlooking Port Stanley from entrenched Argentine defenders, effectively sealing victory in the conflict.
-
B.
Battle of Diamond Hill
The Battle of Diamond Hill was a major engagement of the Second Boer War in June 1900 near Pretoria, where British forces under Lord Roberts clashed with Boer commandos in an effort to break their defensive positions.
-
C.
Battle of Konna
The Battle of Konna was a key 2013 clash in central Mali between Islamist militants and Malian–French forces that marked an early turning point in France’s Operation Serval intervention.
-
D.
Battle of Kohima
The Battle of Kohima was a pivotal 1944 World War II engagement in northeast India where Allied forces halted the Japanese advance, marking a major turning point in the Burma campaign.
-
E.
Battle of Imphal
The Battle of Imphal was a pivotal 1944 World War II engagement in northeast India where Allied forces halted and decisively defeated the Japanese advance toward India.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
World War II battle
ⓘ
battle ⓘ |
| alsoKnownAs | Assault on Roi and Namur ⓘ |
| attacker |
United States Marine Corps
ⓘ
surface form:
U.S. Marine Corps
United States Navy ⓘ
surface form:
U.S. Navy
|
| belligerent |
Imperial Japanese Army
ⓘ
Imperial Japanese Navy ⓘ United States Armed Forces ⓘ |
| campaign |
Gilbert and Marshall Islands campaign
ⓘ
surface form:
Marshall Islands campaign
|
| commanderSide1 |
Commander in Chief, Pacific Ocean Areas
ⓘ
surface form:
United States commanders in Central Pacific Area
|
| commanderSide2 | Japanese garrison commanders on Roi-Namur ⓘ |
| conflict | Pacific War ⓘ |
| countryInvolved |
Japan
ⓘ
surface form:
Empire of Japan
United States of America ⓘ
surface form:
United States
|
| date | February 1944 ⓘ |
| endDate | 1944-02-02 ⓘ |
| followedBy | subsequent U.S. operations in the Marshall Islands ⓘ |
| front |
Pacific Theater of Operations
ⓘ
surface form:
Pacific Ocean theater of World War II
|
| hasPart |
assault on Namur Islet
ⓘ
assault on Roi Islet ⓘ |
| islandGroup | Ralik Chain ⓘ |
| location |
Kwajalein Atoll
ⓘ
Marshall Islands ⓘ Roi-Namur ⓘ |
| militaryBranchInvolved |
Imperial Japanese Army
ⓘ
Imperial Japanese Navy ⓘ United States Marine Corps ⓘ United States Navy ⓘ |
| notableFeature | heavy pre-invasion naval and air bombardment ⓘ |
| objective |
capture of Japanese airfield on Roi
ⓘ
seizure of Roi and Namur islets ⓘ |
| opponent | Japanese garrison on Roi-Namur ⓘ |
| opposedLandingBy | Japanese coastal defenses ⓘ |
| outcome | capture of Japanese-held islets in Kwajalein Atoll ⓘ |
| partOf |
Gilbert and Marshall Islands campaign
ⓘ
World War II ⓘ |
| partOfOperation | Operation Flintlock ⓘ |
| precededBy | Battle of Kwajalein ⓘ |
| relatedEvent |
Battle of Eniwetok
ⓘ
Battle of Kwajalein ⓘ |
| result | American victory ⓘ |
| startDate | 1944-02-01 ⓘ |
| strategicImportance | secured airfields for further Central Pacific operations ⓘ |
| tactics |
amphibious assault
ⓘ
carrier-based air strikes ⓘ naval gunfire support ⓘ |
| theater | Central Pacific ⓘ |
| timePeriod |
Pacific War
ⓘ
surface form:
World War II Pacific campaign
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Battle of Roi-Namur Description of subject: The Battle of Roi-Namur was a World War II Pacific campaign engagement in early 1944 in which U.S. forces seized key Japanese-held islets in the Kwajalein Atoll of the Marshall Islands.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
4th Marine Division