Department of the West (Union Army)
E616383
The Department of the West (Union Army) was a major early Civil War administrative and military command responsible for Union operations across much of the trans-Mississippi West.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T6731869 — 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: Department of the West (Union Army) Context triple: [John C. Frémont, commanded, Department of the West (Union Army)]
-
A.
Army of the Trans-Mississippi
The Army of the Trans-Mississippi was a major Confederate field army that operated west of the Mississippi River during the American Civil War, overseeing military campaigns in states such as Arkansas, Texas, and Louisiana.
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B.
Department of the Cumberland
The Department of the Cumberland was a major Union Army administrative and operational command in the Western Theater of the American Civil War, overseeing key campaigns in Tennessee and surrounding regions.
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C.
Pendleton Division
The Pendleton Division is a regional branch of the U.S. District Court for the District of Oregon that serves federal judicial needs in the northeastern part of the state.
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D.
Army of the Missouri
The Army of the Missouri was a Union field army that operated in the Western Theater of the American Civil War, participating in campaigns across the Trans-Mississippi region.
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E.
V Corps (Union Army)
V Corps (Union Army) was a major infantry corps of the Union Army in the American Civil War, noted for its prominent role in key Eastern Theater campaigns including the Battle of Gettysburg.
- 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: Department of the West (Union Army) Target entity description: The Department of the West (Union Army) was a major early Civil War administrative and military command responsible for Union operations across much of the trans-Mississippi West.
-
A.
Army of the Trans-Mississippi
The Army of the Trans-Mississippi was a major Confederate field army that operated west of the Mississippi River during the American Civil War, overseeing military campaigns in states such as Arkansas, Texas, and Louisiana.
-
B.
Department of the Cumberland
The Department of the Cumberland was a major Union Army administrative and operational command in the Western Theater of the American Civil War, overseeing key campaigns in Tennessee and surrounding regions.
-
C.
Pendleton Division
The Pendleton Division is a regional branch of the U.S. District Court for the District of Oregon that serves federal judicial needs in the northeastern part of the state.
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D.
Army of the Missouri
The Army of the Missouri was a Union field army that operated in the Western Theater of the American Civil War, participating in campaigns across the Trans-Mississippi region.
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E.
V Corps (Union Army)
V Corps (Union Army) was a major infantry corps of the Union Army in the American Civil War, noted for its prominent role in key Eastern Theater campaigns including the Battle of Gettysburg.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
Union Army department
ⓘ
military administrative district ⓘ |
| alsoKnownAs |
Department of the West
ⓘ
linked to:
Department of the West (Union Army)
|
| appliesToJurisdiction |
Arkansas (parts)
ⓘ
Dakota Territory (parts) ⓘ
linked to:
Dakota Territory
Illinois (parts) ⓘ Indian Territory ⓘ Iowa (parts) ⓘ Kansas ⓘ Minnesota (parts) ⓘ
linked to:
Minnesota
Missouri ⓘ New Mexico Territory ⓘ Trans-Mississippi West ⓘ |
| conflict | American Civil War ⓘ |
| country | United States of America ⓘ |
| dissolved | 1861 ⓘ |
| follows |
Western Department (U.S. Army prewar command)
ⓘ
linked to:
Department of the West (Union Army)
|
| hasPart | district commands within its territory ⓘ |
| hasRole |
administration of Union military operations west of the Mississippi River
ⓘ
defense of key Western lines of communication ⓘ organization of volunteer and regular troops in the trans-Mississippi region ⓘ |
| headquartersLocation |
St. Louis, Missouri
ⓘ
linked to:
St. Louis, Missouri, United States
|
| historyNote |
created to coordinate scattered Western posts and forces at the start of the Civil War
ⓘ
its breakup reflected the growing complexity of Union operations in the West ⓘ |
| inception | 1861 ⓘ |
| location | Trans-Mississippi Theater ⓘ |
| militaryBranch | United States Army ⓘ |
| notableCommander |
Brigadier General Samuel R. Curtis
ⓘ
linked to:
Major General Samuel R. Curtis
Brigadier General William S. Harney ⓘ
linked to:
William S. Harney
Major General John C. Frémont ⓘ
linked to:
John C. Frémont
|
| operationalPeriod | early American Civil War ⓘ |
| partOf | Union Army ⓘ |
| reasonForDissolution | reorganization of Union commands in the West ⓘ |
| replacedBy |
Department of Kansas
ⓘ
Department of New Mexico ⓘ Department of the Missouri ⓘ |
| subordinateTo |
Union Army high command
ⓘ
linked to:
Union Army high command (early Civil War)
United States War Department ⓘ
linked to:
United States Department of War
|
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: Department of the West (Union Army) Description of subject: The Department of the West (Union Army) was a major early Civil War administrative and military command responsible for Union operations across much of the trans-Mississippi West.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
General (Confederate States Army)
→
commanded
→
Western Department (when held by Albert Sidney Johnston, de facto general-level command)
ⓘ
linked to: Department of the West (Union Army)
linked to: Department of the West (Union Army)
linked to: Department of the West (Union Army)
linked to: Department of the West (Union Army)