The Manhattan Project was the codename for the US led effort to develop and successfully use an Atomic Bomb. the Manhattan Project …show more content…
If the US had not developed and utilised the atomic bomb, the US had a plan to end the war. Operation Downfall was the US led effort to invade the Japanese homelands during the end of 1945 into 1946. The invasion would be split into two phases (Olympic and Cornet). These offenses would put Allied troops into the Japanese homeland through Kyushu and Honshu. “ The Navy Department estimated that the total losses to America would be between 1.7 and 4 million with 400,000 to 800,000 deaths....The same department estimated that there would be up to 10 million Japanese casualties.” [The History Learning Site, 19 May 2015]. As the US had experienced in the Pacific war, an invasion of Japan would result in high amounts of casualties on the Allied side due to the Japanese mind set of fighting to the death. If this operation had gone under way it would have been the bloodiest military campaign of the Second World War. Fortunately Operation Downfall never occured. The atomic bombings of Japan occured before the invasion would commence and brought a swift end to the war in the