Operation Downfall

E7463

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

Aliases (1)
  • Operation Detachment ×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
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

Referenced by (5)
Subject (surface form when different) Predicate
World War II
World War II ("Operation Detachment")
hasPart
Operation Coronet
Operation Olympic
partOf
Downfall
alsoKnownAs

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