II Corps (Union Army of the Potomac)

E128845

Union Army corps military corps

II Corps of the Union Army of the Potomac was a major Civil War field corps renowned for its pivotal combat role and heavy engagement in key battles such as Antietam, Fredericksburg, Chancellorsville, and Gettysburg.

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All labels observed (7)

Label	Occurrences
II Corps, Army of the Potomac	14
II Corps (Union Army)	6
II Corps (Union Army of the Potomac) canonical	2
3rd Division, II Corps, Army of the Potomac	1
Brigade of the II Corps, Army of the Potomac	1
II Corps (Army of the Potomac)	1
II Corps of the Army of the Potomac	1

How this entity was disambiguated

This entity first appeared as the object of triple T1017130 — 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: II Corps (Union Army of the Potomac)
Context triple: [Cemetery Hill, defendedBy, II Corps (Union Army of the Potomac)]

A. XI Corps (Union Army of the Potomac)
XI Corps was a Union Army corps in the Army of the Potomac composed largely of German-American troops, noted for its controversial performances at battles such as Chancellorsville and Gettysburg.
B. II Corps (United States)
II Corps (United States) was a major U.S. Army field corps that played a significant role in World War II campaigns, particularly in North Africa and Italy.
C. 13th Corps
The 13th Corps was a British Army corps-level formation that played a significant role in North African campaigns during the Second World War.
D. I Corps
I Corps is a major U.S. Army corps-level headquarters responsible for commanding and coordinating large-scale land operations, with a primary focus on the Indo-Pacific region.
E. VII Corps
VII Corps was a major U.S. Army formation in World War II, best known for leading the American landings on the Cotentin Peninsula during the Normandy invasion and subsequent campaigns in Western Europe.
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: II Corps (Union Army of the Potomac)
Target entity description: II Corps of the Union Army of the Potomac was a major Civil War field corps renowned for its pivotal combat role and heavy engagement in key battles such as Antietam, Fredericksburg, Chancellorsville, and Gettysburg.

A. XI Corps (Union Army of the Potomac)
XI Corps was a Union Army corps in the Army of the Potomac composed largely of German-American troops, noted for its controversial performances at battles such as Chancellorsville and Gettysburg.
B. II Corps (United States)
II Corps (United States) was a major U.S. Army field corps that played a significant role in World War II campaigns, particularly in North Africa and Italy.
C. 13th Corps
The 13th Corps was a British Army corps-level formation that played a significant role in North African campaigns during the Second World War.
D. I Corps
I Corps is a major U.S. Army corps-level headquarters responsible for commanding and coordinating large-scale land operations, with a primary focus on the Indo-Pacific region.
E. VII Corps
VII Corps was a major U.S. Army formation in World War II, best known for leading the American landings on the Cotentin Peninsula during the Normandy invasion and subsequent campaigns in Western Europe.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	Union Army corps ⓘ military corps ⓘ
activePeriod	1862–1865 ⓘ
allegiance	Union ⓘ
branch	Union Army ⓘ United States Army ⓘ
commandStructure	organized into multiple infantry divisions with supporting artillery ⓘ
conflict	American Civil War ⓘ
country	United States of America ⓘ
dateFormed	1862 ⓘ
disbanded	1865 ⓘ
engagedIn	Appomattox Campaign ⓘ Battle of Antietam ⓘ Battle of Chancellorsville ⓘ Battle of Cold Harbor ⓘ Battle of Fair Oaks ⓘ Battle of Fredericksburg ⓘ Battle of Gettysburg ⓘ Battle of Malvern Hill ⓘ Battle of Spotsylvania Court House ⓘ Battle of the Wilderness ⓘ Overland Campaign ⓘ Peninsula Campaign ⓘ Seven Days Battles ⓘ Siege of Petersburg ⓘ
formedFrom	Army of the Potomac ⓘ
notableAction	sustained some of the highest total casualties of any Union corps ⓘ
notableCommander	Andrew A. Humphreys ⓘ Darius N. Couch ⓘ Edwin Vose Sumner ⓘ linked to: Edwin V. Sumner Gouverneur K. Warren ⓘ linked to: Gouverneur Kemble Warren Winfield Scott Hancock ⓘ
notableDivisionCommander	Alexander Hays ⓘ David B. Birney NERFINISHED ⓘ Francis C. Barlow ⓘ John Caldwell ⓘ John Gibbon ⓘ
partOf	Army of the Potomac ⓘ
reputation	heavy combat engagement ⓘ high casualty rates ⓘ pivotal role in major Eastern Theater battles ⓘ
roleAtBattleOfAntietam	assaulted the Sunken Road (Bloody Lane) ⓘ
roleAtBattleOfChancellorsville	fought on the Union left and center ⓘ
roleAtBattleOfFredericksburg	participated in assaults on Marye’s Heights ⓘ
roleAtBattleOfGettysburg	held the Union center on Cemetery Ridge ⓘ repulsed Pickett’s Charge ⓘ
size	multi-division field corps ⓘ
theater	Eastern Theater of the American Civil War ⓘ

How these facts were elicited