I am looking at the numbers from operation downfall that Truman and senior members of the administration looked at which had between 500,000 to 1,000,000 lives

I am looking at the numbers from operation downfall that Truman and senior members of the administration looked at which had between 500,000 to 1,000,000 lives lost on the US side for a Japan invasion/defeat. 406k US soldiers lost their lives in WW2 so that would have more than tripled the deaths from its current numbers. And as for WWI and British casualties which I mentioned earlier, the British lost around 885k troops during WWI so US would have exceeded that number even on the low end of casualties. https://en.wikipedia.org/wiki/Operation_Downfall#:~:text=Truman%2C%20submitted%20a%20memorandum%20on,to%201%20million%20American%20dead https://en.wikipedia.org/wiki/Operation_Downfall#:~:text=Tru....