2nd U.S. Cavalry
E641001
The 2nd U.S. Cavalry was a pre–Civil War Regular Army regiment that served on the American frontier and later fought for the Union in the American Civil War.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 2nd U.S. Cavalry canonical | 1 |
| U.S. 2nd Dragoons | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7084200 — 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: 2nd U.S. Cavalry Context triple: [Earl Van Dorn, servedInUnit, 2nd U.S. Cavalry]
-
A.
7th Cavalry Regiment
The 7th Cavalry Regiment is a historic U.S. Army unit best known for its prominent roles in the Indian Wars, including the Battle of the Little Bighorn, and later in major conflicts such as the Vietnam War.
-
B.
10th U.S. Cavalry Regiment
The 10th U.S. Cavalry Regiment was one of the original African American "Buffalo Soldier" units in the U.S. Army, noted for its distinguished service in the Indian Wars and the Spanish–American War.
-
C.
3rd Cavalry Regiment
The 3rd Cavalry Regiment is a historic U.S. Army armored cavalry unit known for its reconnaissance and security missions in major conflicts from the 19th century through the wars in Iraq and Afghanistan.
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D.
9th U.S. Cavalry Regiment
The 9th U.S. Cavalry Regiment is a historic African American "Buffalo Soldier" unit of the United States Army that served prominently in the Indian Wars, the Spanish–American War, and later conflicts.
-
E.
13th Light Dragoons
The 13th Light Dragoons was a British Army cavalry regiment best known for its role in the Charge of the Light Brigade during the Crimean War.
- 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: 2nd U.S. Cavalry Target entity description: The 2nd U.S. Cavalry was a pre–Civil War Regular Army regiment that served on the American frontier and later fought for the Union in the American Civil War.
-
A.
7th Cavalry Regiment
The 7th Cavalry Regiment is a historic U.S. Army unit best known for its prominent roles in the Indian Wars, including the Battle of the Little Bighorn, and later in major conflicts such as the Vietnam War.
-
B.
10th U.S. Cavalry Regiment
The 10th U.S. Cavalry Regiment was one of the original African American "Buffalo Soldier" units in the U.S. Army, noted for its distinguished service in the Indian Wars and the Spanish–American War.
-
C.
3rd Cavalry Regiment
The 3rd Cavalry Regiment is a historic U.S. Army armored cavalry unit known for its reconnaissance and security missions in major conflicts from the 19th century through the wars in Iraq and Afghanistan.
-
D.
9th U.S. Cavalry Regiment
The 9th U.S. Cavalry Regiment is a historic African American "Buffalo Soldier" unit of the United States Army that served prominently in the Indian Wars, the Spanish–American War, and later conflicts.
-
E.
13th Light Dragoons
The 13th Light Dragoons was a British Army cavalry regiment best known for its role in the Charge of the Light Brigade during the Crimean War.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Regular Army unit
ⓘ
United States Army cavalry regiment ⓘ |
| activity |
Indian frontier warfare
ⓘ
frontier duty ⓘ |
| allegiance |
Union
ⓘ
United States of America ⓘ
surface form:
United States
|
| branch | United States Army ⓘ |
| composition | Regular Army enlisted men and officers ⓘ |
| conflict |
American Civil War
ⓘ
American Indian Wars NERFINISHED ⓘ |
| country | United States of America ⓘ |
| engagement |
American Civil War campaigns
NERFINISHED
ⓘ
frontier skirmishes with Native American tribes ⓘ |
| era | pre–Civil War U.S. Army NERFINISHED ⓘ |
| garrisonDuty |
Texas frontier
ⓘ
Western posts of the United States ⓘ |
| historicalPeriod | 19th century ⓘ |
| militaryBranch | U.S. Army NERFINISHED ⓘ |
| notableCommander |
Albert Sidney Johnston
NERFINISHED
ⓘ
Robert E. Lee NERFINISHED ⓘ William J. Hardee NERFINISHED ⓘ |
| notableFor |
service in the Union Army during the American Civil War
ⓘ
service on the American frontier before the Civil War ⓘ |
| notableOfficer |
Charles W. Field
NERFINISHED
ⓘ
Earl Van Dorn NERFINISHED ⓘ Edmund Kirby Smith NERFINISHED ⓘ Fitzhugh Lee NERFINISHED ⓘ George H. Thomas NERFINISHED ⓘ George Stoneman NERFINISHED ⓘ George T. Anderson NERFINISHED ⓘ Innis N. Palmer NERFINISHED ⓘ John B. Hood NERFINISHED ⓘ John Bell Hood NERFINISHED ⓘ Nathan G. Evans NERFINISHED ⓘ William B. Royall NERFINISHED ⓘ William H. Emory NERFINISHED ⓘ |
| predecessorRole | frontier defense unit ⓘ |
| role |
cavalry
ⓘ
mounted troops ⓘ |
| servedFor | Union during the American Civil War ⓘ |
| service | Union Army NERFINISHED ⓘ |
| theater |
American frontier
NERFINISHED
ⓘ
Western frontier of the United States ⓘ |
| type | line cavalry regiment ⓘ |
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: 2nd U.S. Cavalry Description of subject: The 2nd U.S. Cavalry was a pre–Civil War Regular Army regiment that served on the American frontier and later fought for the Union in the American Civil War.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
U.S. 2nd Dragoons