Iron Brigade
E615238
The Iron Brigade was a famed Union Army infantry formation in the American Civil War, renowned for its distinctive black Hardee hats and fierce fighting reputation in major battles such as Antietam and Gettysburg.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Iron Brigade canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6754615 — 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: Iron Brigade Context triple: [McPherson Ridge, associatedWithMilitaryUnit, Iron Brigade]
-
A.
Barksdale’s Brigade
Barksdale’s Brigade was a Confederate infantry brigade from Mississippi, commanded by Brigadier General William Barksdale, noted for its fierce assaults during major battles such as Gettysburg in the American Civil War.
-
B.
Morgan's Rifle Corps
Morgan's Rifle Corps was an elite Continental Army light infantry unit of expert marksmen led by Daniel Morgan during the American Revolutionary War.
-
C.
Vincent’s Brigade
Vincent’s Brigade was a Union Army infantry brigade in the American Civil War, best known for its crucial defensive stand on Little Round Top during the Battle of Gettysburg.
-
D.
Hays's Brigade
Hays's Brigade was a Confederate infantry brigade from Louisiana, famed for its fierce fighting in major Civil War battles such as Gettysburg under the command of General Harry T. Hays.
-
E.
Household Brigade
The Household Brigade is a prestigious formation of elite British Army regiments responsible for ceremonial duties and the protection of the monarch.
- 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: Iron Brigade Target entity description: The Iron Brigade was a famed Union Army infantry formation in the American Civil War, renowned for its distinctive black Hardee hats and fierce fighting reputation in major battles such as Antietam and Gettysburg.
-
A.
Barksdale’s Brigade
Barksdale’s Brigade was a Confederate infantry brigade from Mississippi, commanded by Brigadier General William Barksdale, noted for its fierce assaults during major battles such as Gettysburg in the American Civil War.
-
B.
Morgan's Rifle Corps
Morgan's Rifle Corps was an elite Continental Army light infantry unit of expert marksmen led by Daniel Morgan during the American Revolutionary War.
-
C.
Vincent’s Brigade
Vincent’s Brigade was a Union Army infantry brigade in the American Civil War, best known for its crucial defensive stand on Little Round Top during the Battle of Gettysburg.
-
D.
Hays's Brigade
Hays's Brigade was a Confederate infantry brigade from Louisiana, famed for its fierce fighting in major Civil War battles such as Gettysburg under the command of General Harry T. Hays.
-
E.
Household Brigade
The Household Brigade is a prestigious formation of elite British Army regiments responsible for ceremonial duties and the protection of the monarch.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | Union Army infantry brigade ⓘ |
| allegiance | Union NERFINISHED ⓘ |
| alsoKnownAs |
Black Hat Brigade
NERFINISHED
ⓘ
Iron Brigade of the West NERFINISHED ⓘ |
| branch | Union Army NERFINISHED ⓘ |
| casualtyRate | among the highest of any Union brigade ⓘ |
| composedOf |
19th Indiana Infantry Regiment
NERFINISHED
ⓘ
24th Michigan Infantry Regiment NERFINISHED ⓘ 2nd Wisconsin Infantry Regiment NERFINISHED ⓘ 6th Wisconsin Infantry Regiment NERFINISHED ⓘ 7th Wisconsin Infantry Regiment NERFINISHED ⓘ |
| conflict | American Civil War ⓘ |
| country | United States of America ⓘ |
| disbandedIn | 1865 ⓘ |
| engagedIn |
Battle of Antietam
NERFINISHED
ⓘ
Battle of Brawner’s Farm NERFINISHED ⓘ Battle of Fredericksburg NERFINISHED ⓘ Battle of Gettysburg NERFINISHED ⓘ Battle of South Mountain NERFINISHED ⓘ Battle of Spotsylvania Court House NERFINISHED ⓘ Battle of the Wilderness NERFINISHED ⓘ Overland Campaign NERFINISHED ⓘ Second Battle of Bull Run NERFINISHED ⓘ |
| formedIn | 1861 ⓘ |
| historicalRegion | Midwestern United States NERFINISHED ⓘ |
| languageOfName | English ⓘ |
| militaryBranchType | infantry ⓘ |
| nicknameOrigin | derived from perceived toughness in battle ⓘ |
| notableCommander |
John Gibbon
NERFINISHED
ⓘ
Solomon Meredith NERFINISHED ⓘ |
| notableFor |
distinctive black Hardee hats
ⓘ
fierce fighting reputation ⓘ heavy combat losses ⓘ |
| partOf |
Army of the Potomac
NERFINISHED
ⓘ
I Corps (Union Army) NERFINISHED ⓘ |
| recruitedFrom |
Indiana
NERFINISHED
ⓘ
Michigan NERFINISHED ⓘ Wisconsin NERFINISHED ⓘ |
| reputation | one of the hardest-fighting brigades in the Union Army ⓘ |
| roleAtAntietam | assaulted Confederate positions in the Cornfield ⓘ |
| roleAtGettysburg | fought on the first day north and west of the town ⓘ |
| theater | Eastern Theater of the American Civil War NERFINISHED ⓘ |
| timePeriod | 1861–1865 ⓘ |
| uniformFeature |
black Hardee hat
ⓘ
frock coat ⓘ |
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: Iron Brigade Description of subject: The Iron Brigade was a famed Union Army infantry formation in the American Civil War, renowned for its distinctive black Hardee hats and fierce fighting reputation in major battles such as Antietam and Gettysburg.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.