Cavalry Corps, Army of the Potomac
E678846
The Cavalry Corps, Army of the Potomac was the primary mounted arm of the Union’s principal Eastern army during the American Civil War, responsible for reconnaissance, screening, raiding, and cavalry combat in major campaigns such as Gettysburg and the Overland Campaign.
All labels observed (4)
How this entity was disambiguated
This entity first appeared as the object of triple T7632871 — 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: Cavalry Corps, Army of the Potomac Context triple: [1st Massachusetts Cavalry, partOf, Cavalry Corps, Army of the Potomac]
-
A.
III Corps, Army of the Potomac
III Corps, Army of the Potomac was a major Union infantry corps in the American Civil War, noted for its hard fighting and heavy losses in key battles such as Gettysburg.
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B.
I Corps (Union Army of the Potomac)
I Corps was a major Union Army formation in the American Civil War, noted for its prominent role in key battles such as Gettysburg.
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C.
2nd Cavalry Group
The 2nd Cavalry Group was a U.S. Army mechanized cavalry unit in World War II known for reconnaissance, screening, and security operations in support of major armored and infantry formations.
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D.
French III Corps
The French III Corps was a major field formation of Napoleon’s army that played a significant role in the Waterloo campaign of 1815.
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E.
United States Cavalry
The United States Cavalry was a historic mounted combat branch of the U.S. Army that played a key role in 19th- and early 20th-century American military campaigns, including the Indian Wars, the Civil War, and the Spanish–American 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: Cavalry Corps, Army of the Potomac Target entity description: The Cavalry Corps, Army of the Potomac was the primary mounted arm of the Union’s principal Eastern army during the American Civil War, responsible for reconnaissance, screening, raiding, and cavalry combat in major campaigns such as Gettysburg and the Overland Campaign.
-
A.
III Corps, Army of the Potomac
III Corps, Army of the Potomac was a major Union infantry corps in the American Civil War, noted for its hard fighting and heavy losses in key battles such as Gettysburg.
-
B.
I Corps (Union Army of the Potomac)
I Corps was a major Union Army formation in the American Civil War, noted for its prominent role in key battles such as Gettysburg.
-
C.
2nd Cavalry Group
The 2nd Cavalry Group was a U.S. Army mechanized cavalry unit in World War II known for reconnaissance, screening, and security operations in support of major armored and infantry formations.
-
D.
French III Corps
The French III Corps was a major field formation of Napoleon’s army that played a significant role in the Waterloo campaign of 1815.
-
E.
United States Cavalry
The United States Cavalry was a historic mounted combat branch of the U.S. Army that played a key role in 19th- and early 20th-century American military campaigns, including the Indian Wars, the Civil War, and the Spanish–American War.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
cavalry corps
ⓘ
military unit ⓘ |
| allegiance | Union NERFINISHED ⓘ |
| branch | Union Army NERFINISHED ⓘ |
| conflict | American Civil War ⓘ |
| country | United States of America ⓘ |
| disbandedIn | 1865 ⓘ |
| engagedIn |
Appomattox Campaign
NERFINISHED
ⓘ
Battle of Brandy Station NERFINISHED ⓘ Battle of Chancellorsville NERFINISHED ⓘ Battle of Gettysburg NERFINISHED ⓘ Battle of Spotsylvania Court House NERFINISHED ⓘ Battle of Yellow Tavern NERFINISHED ⓘ Battle of the Wilderness NERFINISHED ⓘ Gettysburg Campaign NERFINISHED ⓘ Overland Campaign NERFINISHED ⓘ Siege of Petersburg NERFINISHED ⓘ |
| formedIn | 1863 ⓘ |
| garrison | Army of the Potomac field armies in Virginia and Maryland ⓘ |
| historicalEra | 19th century ⓘ |
| languageOfCommand | English ⓘ |
| notableCommander |
Alfred Pleasonton
NERFINISHED
ⓘ
David McMurtrie Gregg NERFINISHED ⓘ George Stoneman NERFINISHED ⓘ Philip Sheridan NERFINISHED ⓘ |
| notableEngagement |
Sheridan’s 1864 cavalry raids in the Overland Campaign
ⓘ
cavalry actions on the flanks at the Battle of Gettysburg ⓘ |
| notableFor |
development of effective Union cavalry tactics in the Eastern Theater
ⓘ
large-scale cavalry engagements such as Brandy Station ⓘ |
| opposedBy | Cavalry Corps, Army of Northern Virginia NERFINISHED ⓘ |
| partOf | Army of the Potomac NERFINISHED ⓘ |
| primaryFunction |
conduct raids against Confederate forces
ⓘ
engage Confederate cavalry ⓘ provide reconnaissance for the Army of the Potomac ⓘ screen movements of the Army of the Potomac ⓘ |
| region | Eastern United States NERFINISHED ⓘ |
| role |
cavalry
ⓘ
mounted combat ⓘ raiding ⓘ reconnaissance ⓘ screening ⓘ |
| subordinateTo | headquarters of the Army of the Potomac ⓘ |
| theaterOfOperations | Eastern Theater of the American Civil War NERFINISHED ⓘ |
| typeOfUnit | mounted troops ⓘ |
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: Cavalry Corps, Army of the Potomac Description of subject: The Cavalry Corps, Army of the Potomac was the primary mounted arm of the Union’s principal Eastern army during the American Civil War, responsible for reconnaissance, screening, raiding, and cavalry combat in major campaigns such as Gettysburg and the Overland Campaign.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Union Army of the Potomac cavalry
this entity surface form:
Reserve Brigade of the Cavalry Corps, Army of the Potomac
this entity surface form:
1st Division, Cavalry Corps, Army of the Potomac