Whakaotihia te rerenga e whai ake nei: Ko te Operation Downfall te mahere a te Allied mo te whakaekenga o nga moutere o te motu o Japan i te mutunga o te Pakanga Tuarua o te Ao. I whakakorea te mahi i whakaritea i te wā i tukua ai a Hapani i muri i nga pupuhi karihi o Hiroshima me Nagasaki, te whakapuakanga pakanga a te Soviet me te
te whakaekenga o Manchuria. E rua ngā wāhanga o te mahi: Operation Olympic me Operation Coronet. I whakaritea ki te tiimata i te Noema 1945, ko te Operation Olympic te tikanga ki te hopu i te tuatoru o te tonga o te moutere nui o Hapanihi, Kyūshū, me te moutere o Okinawa i hopukina tata nei hei waahi whakangahau. I te timatanga o te tau 1946 ka tae mai te Operation Coronet, te whakaekenga kua whakaritea o te Kantō Plain, tata ki Tokyo, i te moutere nui o Honshu o Japan. Ko nga papa rererangi i Kyūshū i hopukina i roto i te Operation Olympic ka taea te tautoko i te rererangi rererangi mo te Operation Coronet. Mēnā i tū a Downfall, tērā pea koia te mahi amphibious nui rawa atu i roto i te hītori.