Americal Division
E136554
The Americal Division was a U.S. Army infantry division active during World War II and the Vietnam War, historically notorious for its involvement in the My Lai massacre.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Americal Division canonical | 29 |
How this entity was disambiguated
This entity first appeared as the object of triple T1196945 — 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: Americal Division Context triple: [My Lai massacre, perpetratorUnit, Americal Division]
-
A.
All American Division
The All American Division is the famed U.S. Army airborne division known for its paratroopers and distinguished combat service in major conflicts from World War II onward.
-
B.
Western Division
Western Division was one of the regional groupings of teams that made up the early professional basketball league structure in what became the NBA.
-
C.
Western Division
Western Division was one of the National Hockey League’s early divisional groupings, created during the league’s expansion era to organize teams primarily located in the western regions of North America.
-
D.
Metropolitan Division
The Metropolitan Division is a National Hockey League division in the Eastern Conference that includes teams such as the Washington Capitals, Pittsburgh Penguins, and New York Rangers.
-
E.
Metropolitan Division
The Metropolitan Division is a specialized tactical and crime-suppression unit within the Los Angeles Police Department known for handling high-risk operations, crowd control, and critical incident response.
- 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: Americal Division Target entity description: The Americal Division was a U.S. Army infantry division active during World War II and the Vietnam War, historically notorious for its involvement in the My Lai massacre.
-
A.
All American Division
The All American Division is the famed U.S. Army airborne division known for its paratroopers and distinguished combat service in major conflicts from World War II onward.
-
B.
Western Division
Western Division was one of the regional groupings of teams that made up the early professional basketball league structure in what became the NBA.
-
C.
Western Division
Western Division was one of the National Hockey League’s early divisional groupings, created during the league’s expansion era to organize teams primarily located in the western regions of North America.
-
D.
Metropolitan Division
The Metropolitan Division is a National Hockey League division in the Eastern Conference that includes teams such as the Washington Capitals, Pittsburgh Penguins, and New York Rangers.
-
E.
Metropolitan Division
The Metropolitan Division is a specialized tactical and crime-suppression unit within the Los Angeles Police Department known for handling high-risk operations, crowd control, and critical incident response.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Army division
ⓘ
infantry division ⓘ |
| activated | World War II era ⓘ |
| allegation | commission of war crimes in Vietnam ⓘ |
| associatedUnit | 23rd Infantry Division ⓘ |
| component |
artillery units
ⓘ
infantry regiments ⓘ support units ⓘ |
| conflict |
Vietnam War
ⓘ
World War II ⓘ |
| country | United States of America ⓘ |
| disbanded | post–World War II period ⓘ |
| engagement |
ground combat operations in South Vietnam
ⓘ
ground combat operations in the Pacific ⓘ |
| historicalPeriod | 20th century ⓘ |
| involvement | counterinsurgency operations in Vietnam ⓘ |
| militaryBranch | United States Army ⓘ |
| notableEvent | My Lai massacre ⓘ |
| notableFor |
association with the My Lai massacre
ⓘ
combat service in World War II ⓘ combat service in the Vietnam War ⓘ |
| notableOperation |
Bougainville Campaign
ⓘ
linked to:
Northern Solomons campaign
Guadalcanal Campaign ⓘ
linked to:
Battle of Guadalcanal
Philippines Campaign (1944–1945) ⓘ
linked to:
Battle of the Philippines (1944–1945)
|
| reactivated | Vietnam War era ⓘ |
| reputation | historically notorious for involvement in the My Lai massacre ⓘ |
| role | infantry ⓘ |
| service |
United States Army ground forces
ⓘ
linked to:
U.S. Army Ground Forces
|
| theater |
Pacific Theater of World War II
ⓘ
linked to:
Pacific Theater of Operations
Vietnam War theater ⓘ |
| type | combined arms formation ⓘ |
| warCrimeInvolvement | My Lai massacre ⓘ |
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: Americal Division Description of subject: The Americal Division was a U.S. Army infantry division active during World War II and the Vietnam War, historically notorious for its involvement in the My Lai massacre.
Referenced by (29)
Full triples — surface form annotated when it differs from this entity's canonical label.