Casualties on Okinawa were 35 percent; one out of three US participants was wounded or killed.
The scale of the operation was to be similar to that of the Normandy invasion in France in Junewhich involvedAllied troops in the first 24 hours and approximatelyothers by the end of the first week of July.
The argument that Japan would have collapsed by early fall is speculative but powerful.
He knew there was no guarantee the Japanese would surrender if the test succeeded, and he felt that a failed demonstration would be worse than none at all. On May 8,Germany surrendered unconditionally to great rejoicing in the Allied countries.
Leo Szilard, one of the scientists on the Manhattan Project, predicting the use of the bomb would start the arms race with the Soviet Union. The military situation in the Pacific When Truman became president, a long and bitter military campaign in the Pacific, marked by fanatical Japanese resistance and strongly held racial and cultural hostilities on both sides, was nearing its conclusion.
There are no cases of a direct, all-out war between the US and the Soviets that can be attributed to the potentially devastating effects of atomic weaponry.