Operation Downfall

E7463

military operation plan planned invasion

Operation Downfall was the Allied forces’ planned but never-executed invasion of the Japanese home islands near the end of World War II.

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All labels observed (3)

Label	Occurrences
Operation Downfall canonical	7
Operation Detachment	1
second phase of Operation Downfall	1

Statements (47)

Predicate	Object
instanceOf	military operation plan ⓘ planned invasion ⓘ
anticipatedCasualties	very high Allied casualties ⓘ very high Japanese casualties ⓘ
causeOfCancellation	Japanese surrender ⓘ Soviet declaration of war on Japan ⓘ atomic bombings of Hiroshima and Nagasaki ⓘ
codename	Downfall ⓘ
conflict	World War II ⓘ
country	United States of America ⓘ surface form: United States
countryTargeted	Japan ⓘ
historicalAssessment	example of total war planning against Japan ⓘ
historicalSignificance	largest amphibious invasion ever planned ⓘ
location	Japanese home islands ⓘ
militaryBranchInvolved	Royal Air Force ⓘ Royal Navy ⓘ United States Army ⓘ United States Marine Corps ⓘ United States Navy ⓘ
objective	defeat of Japan ⓘ forced Japanese surrender ⓘ invasion of Honshu ⓘ invasion of Kyushu ⓘ
opponent	Japan ⓘ surface form: Empire of Japan
participant	Allied forces ⓘ British Commonwealth forces ⓘ United Kingdom ⓘ United States of America ⓘ surface form: United States
partOf	Allied strategy against Japan ⓘ
plannedAirSupport	strategic bombing of Japan ⓘ
plannedBy	Allied military planners ⓘ Joint Chiefs of Staff ⓘ surface form: United States Joint Chiefs of Staff
plannedLandingArea	Kanto ⓘ surface form: Kanto Plain Kyushu ⓘ Kantō region ⓘ surface form: Tokyo region
plannedNavalSupport	amphibious assault fleets ⓘ
plannedOutcome	occupation of Japan ⓘ
plannedStartTime	late 1945 ⓘ
planningBegan	1945 ⓘ
relatedEvent	Manchurian Strategic Offensive Operation ⓘ surface form: Soviet invasion of Manchuria atomic bombing of Hiroshima ⓘ atomic bombing of Nagasaki ⓘ
status	never executed ⓘ
subOperation	Operation Coronet ⓘ Operation Olympic ⓘ
theaterOfWar	Pacific War ⓘ
timePeriod	1945 ⓘ

Referenced by (9)

Full triples — surface form annotated when it differs from this entity's canonical label.

World War II → hasPart → Operation Downfall ⓘ

this entity surface form: Operation Detachment

Operation Olympic → partOf → Operation Downfall ⓘ

Downfall → alsoKnownAs → Operation Downfall ⓘ

Operation Coronet → partOf → Operation Downfall ⓘ

J-Squad (training and combat association) → associatedWith → Operation Downfall ⓘ

subject surface form: J-Squad

United Defense Force → notableOperation → Operation Downfall ⓘ

Invasion of the Kanto Plain (planned) → partOf → Operation Downfall ⓘ

Invasion of the Kanto Plain (planned) → codenameContext → Operation Downfall ⓘ

this entity surface form: second phase of Operation Downfall