XXI Corps (Army of the Cumberland)
E858734
XXI Corps (Army of the Cumberland) was a Union Army corps that served in the Western Theater of the American Civil War, participating in major campaigns under the Army of the Cumberland.
All labels observed (1)
| Label | Occurrences |
|---|---|
| XXI Corps (Army of the Cumberland) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10238386 — 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: XXI Corps (Army of the Cumberland) Context triple: [Army of the Cumberland, notableUnit, XXI Corps (Army of the Cumberland)]
-
A.
XIV Corps (Army of the Cumberland)
XIV Corps (Army of the Cumberland) was a major Union Army corps in the American Civil War, distinguished for its key role in campaigns such as Chickamauga and Chattanooga under the Army of the Cumberland.
-
B.
IV Corps (Army of the Cumberland)
IV Corps (Army of the Cumberland) was a major Union infantry corps that played a significant role in the Western Theater of the American Civil War, participating in campaigns such as Chickamauga, Chattanooga, and the Atlanta Campaign.
-
C.
XXIII Corps (Army of the Ohio)
XXIII Corps (Army of the Ohio) was a Union Army corps that served primarily in the Western Theater of the American Civil War, participating in campaigns such as the Atlanta and Carolinas operations.
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D.
Army of the Cumberland
The Army of the Cumberland was a major Union field army in the Western Theater of the American Civil War, noted for its key role in campaigns such as Chickamauga, Chattanooga, and the drive toward Atlanta.
-
E.
XX Corps (Union Army)
XX Corps (Union Army) was a major Union Army corps formed in 1864 that served primarily in the Western Theater under generals like Joseph Hooker and Henry Slocum, notably participating in the Atlanta Campaign and Sherman's March to the Sea during the American Civil 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: XXI Corps (Army of the Cumberland) Target entity description: XXI Corps (Army of the Cumberland) was a Union Army corps that served in the Western Theater of the American Civil War, participating in major campaigns under the Army of the Cumberland.
-
A.
XIV Corps (Army of the Cumberland)
XIV Corps (Army of the Cumberland) was a major Union Army corps in the American Civil War, distinguished for its key role in campaigns such as Chickamauga and Chattanooga under the Army of the Cumberland.
-
B.
IV Corps (Army of the Cumberland)
IV Corps (Army of the Cumberland) was a major Union infantry corps that played a significant role in the Western Theater of the American Civil War, participating in campaigns such as Chickamauga, Chattanooga, and the Atlanta Campaign.
-
C.
XXIII Corps (Army of the Ohio)
XXIII Corps (Army of the Ohio) was a Union Army corps that served primarily in the Western Theater of the American Civil War, participating in campaigns such as the Atlanta and Carolinas operations.
-
D.
Army of the Cumberland
The Army of the Cumberland was a major Union field army in the Western Theater of the American Civil War, noted for its key role in campaigns such as Chickamauga, Chattanooga, and the drive toward Atlanta.
-
E.
XX Corps (Union Army)
XX Corps (Union Army) was a major Union Army corps formed in 1864 that served primarily in the Western Theater under generals like Joseph Hooker and Henry Slocum, notably participating in the Atlanta Campaign and Sherman's March to the Sea during the American Civil War.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Union Army formation
ⓘ
military corps ⓘ |
| activePeriodEnd | 1864 ⓘ |
| activePeriodStart | 1863 ⓘ |
| allegiance |
Union Army
NERFINISHED
ⓘ
United States of America ⓘ |
| associatedWith | Union victory in the Western Theater ⓘ |
| branch | Union Army NERFINISHED ⓘ |
| commandedBy | Major General Thomas L. Crittenden NERFINISHED ⓘ |
| commandStructure | Army corps ⓘ |
| conflict | American Civil War ⓘ |
| corpsNumber | XXI NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dateFormed | January 9, 1863 ⓘ |
| disbanded | 1864 ⓘ |
| engagement |
Battle of Chickamauga
NERFINISHED
ⓘ
Battle of Lookout Mountain NERFINISHED ⓘ Battle of Missionary Ridge NERFINISHED ⓘ Battle of Stones River NERFINISHED ⓘ Chattanooga Campaign NERFINISHED ⓘ Tullahoma Campaign NERFINISHED ⓘ |
| firstCommander | Thomas L. Crittenden NERFINISHED ⓘ |
| formedFrom | Army of the Ohio NERFINISHED ⓘ |
| garrisonRegion |
Georgia
NERFINISHED
ⓘ
Tennessee NERFINISHED ⓘ |
| historicalEra | 19th century ⓘ |
| languageOfCommand | English ⓘ |
| militaryBranch | infantry ⓘ |
| namedAfter | its numerical designation in Roman numerals ⓘ |
| notableCommander | Thomas L. Crittenden NERFINISHED ⓘ |
| notableEvent | heavy fighting at the Battle of Chickamauga ⓘ |
| notableFor | service in the Western Theater of the American Civil War ⓘ |
| opponent | Confederate States Army NERFINISHED ⓘ |
| partOf | Army of the Cumberland NERFINISHED ⓘ |
| regionOfOperations |
American South
NERFINISHED
ⓘ
Tennessee and Georgia campaigns ⓘ |
| role |
field operations
ⓘ
offensive operations ⓘ |
| side | Union ⓘ |
| size | corps ⓘ |
| subordinateTo | Department of the Cumberland NERFINISHED ⓘ |
| theater | Western Theater of the American Civil War NERFINISHED ⓘ |
| type | Union Army corps in the Western Theater ⓘ |
| usedFormation | three-division corps structure ⓘ |
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: XXI Corps (Army of the Cumberland) Description of subject: XXI Corps (Army of the Cumberland) was a Union Army corps that served in the Western Theater of the American Civil War, participating in major campaigns under the Army of the Cumberland.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.