Union II Corps
E726139
Union II Corps was a major infantry corps of the Union Army of the Potomac during the American Civil War, renowned for its heavy combat role and high casualties in many of the war’s key Eastern Theater battles.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Union II Corps canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8336621 — 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: Union II Corps Context triple: [Battle of Boydton Plank Road, notableUnit, Union II Corps]
-
A.
Union III Corps
Union III Corps was a major formation of the Union Army of the Potomac during the American Civil War, noted for its hard fighting and heavy casualties in key battles such as Gettysburg.
-
B.
Union V Corps
Union V Corps was a major infantry formation of the Union Army of the Potomac during the American Civil War, noted for its significant combat role in key battles such as Gettysburg.
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C.
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.
-
D.
French IV Corps
The French IV Corps was a major corps-sized formation of Napoleon's army that played a significant role in the Waterloo campaign of 1815.
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E.
II U.S. Corps
II U.S. Corps was a major American field corps that played a key combat role in the Mediterranean theater during World War II, particularly in the North African and Italian campaigns.
- 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: Union II Corps Target entity description: Union II Corps was a major infantry corps of the Union Army of the Potomac during the American Civil War, renowned for its heavy combat role and high casualties in many of the war’s key Eastern Theater battles.
-
A.
Union III Corps
Union III Corps was a major formation of the Union Army of the Potomac during the American Civil War, noted for its hard fighting and heavy casualties in key battles such as Gettysburg.
-
B.
Union V Corps
Union V Corps was a major infantry formation of the Union Army of the Potomac during the American Civil War, noted for its significant combat role in key battles such as Gettysburg.
-
C.
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.
-
D.
French IV Corps
The French IV Corps was a major corps-sized formation of Napoleon's army that played a significant role in the Waterloo campaign of 1815.
-
E.
II U.S. Corps
II U.S. Corps was a major American field corps that played a key combat role in the Mediterranean theater during World War II, particularly in the North African and Italian campaigns.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Union Army formation
ⓘ
military corps ⓘ |
| allegiance | Union NERFINISHED ⓘ |
| branch | Union Army NERFINISHED ⓘ |
| commander |
Andrew A. Humphreys
NERFINISHED
ⓘ
Darius N. Couch NERFINISHED ⓘ Edwin Vose Sumner NERFINISHED ⓘ Winfield Scott Hancock NERFINISHED ⓘ |
| composition | volunteer infantry regiments ⓘ |
| conflict | American Civil War ⓘ |
| country | United States of America ⓘ |
| disbanded | 1865 ⓘ |
| engagedAgainst | Army of Northern Virginia NERFINISHED ⓘ |
| engagedIn |
Appomattox Campaign
NERFINISHED
ⓘ
Battle of Antietam NERFINISHED ⓘ Battle of Chancellorsville NERFINISHED ⓘ Battle of Cold Harbor NERFINISHED ⓘ Battle of Fredericksburg NERFINISHED ⓘ Battle of Gettysburg NERFINISHED ⓘ Battle of Spotsylvania Court House NERFINISHED ⓘ Battle of the Wilderness NERFINISHED ⓘ Overland Campaign NERFINISHED ⓘ Siege of Petersburg NERFINISHED ⓘ |
| formed | 1862 ⓘ |
| garrison | primarily active in the field rather than fixed garrisons ⓘ |
| includedUnitType |
artillery batteries
ⓘ
sharpshooter units ⓘ |
| notableAction |
assaults at the Bloody Angle at Spotsylvania Court House
ⓘ
assaults on Marye’s Heights at Fredericksburg ⓘ assaults on the Sunken Road at Antietam ⓘ defense of Cemetery Ridge at Gettysburg ⓘ |
| notableCommander | Winfield Scott Hancock NERFINISHED ⓘ |
| notableFor |
heavy combat role
ⓘ
high casualties ⓘ |
| participatedIn |
Gettysburg Campaign
NERFINISHED
ⓘ
Maryland Campaign NERFINISHED ⓘ Richmond–Petersburg Campaign NERFINISHED ⓘ major campaigns in Virginia ⓘ |
| partOf | Army of the Potomac NERFINISHED ⓘ |
| reputation |
hard-fighting corps
ⓘ
sustained some of the highest casualties of any Union corps ⓘ |
| role | infantry ⓘ |
| serviceBranch | United States Volunteers NERFINISHED ⓘ |
| side | Union Army of the Potomac NERFINISHED ⓘ |
| size | multiple divisions ⓘ |
| subordinateTo | Army of the Potomac commanding general ⓘ |
| theater | Eastern Theater of the American Civil War NERFINISHED ⓘ |
| type | field corps ⓘ |
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: Union II Corps Description of subject: Union II Corps was a major infantry corps of the Union Army of the Potomac during the American Civil War, renowned for its heavy combat role and high casualties in many of the war’s key Eastern Theater battles.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.