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.

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 →
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	Empire of Japan →
participant	Allied forces → British Commonwealth forces → United Kingdom → United States →
partOf	Allied strategy against Japan →
plannedAirSupport	strategic bombing of Japan →
plannedBy	Allied military planners → United States Joint Chiefs of Staff →
plannedLandingArea	Kanto Plain → Kyushu → Tokyo region →
plannedNavalSupport	amphibious assault fleets →
plannedOutcome	occupation of Japan →
plannedStartTime	late 1945 →
planningBegan	1945 →
relatedEvent	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 →

Subject (surface form when different)	Predicate
World War II → World War II ("Operation Detachment") →	hasPart
Operation Coronet → Operation Olympic →	partOf
Downfall →	alsoKnownAs