Mezue ahịrịokwu na-esonụ: Operation Downfall bụ atụmatụ a tụrụ aro ka ndị Allied mee maka mwakpo nke agwaetiti ndị Japan na nso ngwụsị Agha Ụwa nke Abụọ. A kagbuola ọrụ ahụ a haziri ahazi mgbe Japan chịliri aka elu na-eso bọmbụ atọm nke Hiroshima na Nagasaki, nkwupụta agha nke Soviet na ndị agha Japan.
mbuso agha nke Manchuria. Ọrụ ahụ nwere akụkụ abụọ: Ọrụ Olympic na Ọrụ Coronet. E mere atụmatụ na a ga-amalite na Nọvemba 1945, Ebumnuche Olympic bụ ijide ndịda nke atọ nke agwaetiti ndịda Japan, Kyūshū, na agwaetiti Okinawa nke a na-ejide na nso nso a ka a ga-eji mee ihe dị ka ebe nhazi. Ná mmalite afọ 1946 ka a malitere ime ihe a kpọrọ Operation Coronet, nke bụ́ mbuso agha a haziri maka Ala Dị Larịị nke Kantō, nke dị nso na Tokyo, n'isi agwaetiti Japan bụ́ Honshu. Ebe ụgbọelu dị na Kyūshū nke e jidere na Operation Olympic ga-enye ohere nkwado ikuku nke ala maka Operation Coronet. Ọ bụrụ na e mere ihe ahụ, ọ gaara abụ ọrụ amphibious kasị ukwuu n'akụkọ ihe mere eme.