This message was self-deleted by its author

[EX500rider]

19. Here:

Operation Downfall
https://en.wikipedia.org/wiki/Operation_Downfall#Estimated_casualties

Casualty predictions varied widely, but were extremely high. Depending on the degree to which Japanese civilians would have resisted the invasion, estimates ran up into the millions for Allied casualties.

The Japanese had organized the Patriotic Citizens Fighting Corps, which included all healthy men aged 15 to 60 and women 17 to 40 for a total of 28 million people, for combat support and, later, combat jobs. Weapons, training and uniforms were generally lacking: some men were armed with nothing better than muzzle-loading muskets, longbows, or bamboo spears; nevertheless, they were expected to make do with what they had. One mobilized high school girl, Yukiko Kasai, found herself issued an awl and told, "Even killing one American soldier will do. ... You must aim for the abdomen."

By the time of surrender, the Japanese had 916,828 military personnel either in position or in various stages of deployment on Kyushu alone. The total strength of the Japanese military in the Home Islands amounted to 4,335,500, of whom 2,372,700 were in the Army and 1,962,800 in the Navy.

In April 1945, the Joint Chiefs of Staff formally adopted a planning paper giving a range of possible casualties based on experience in both Europe and the Pacific. Given a troop list of 766,700 men and a 90-day campaign, the US Sixth Army could be expected to suffer between 514,072 casualties (including 134,556 dead and missing) under the "Pacific Experience" (1.95 dead and missing and 7.45 total casualties/1,000 men/day) and 149,046 casualties (including 28,981 dead and missing) under the "European Experience" (0.42 dead and missing and 2.16 total casualties/1,000 men/day). This assessment included neither casualties suffered after the 90-day mark (US planners envisioned switching to the tactical defensive by D+120[80]), nor personnel losses at sea from Japanese air attacks. In order to sustain the campaign on Kyushu, planners estimated a replacement stream of 100,000 men per month would be necessary.

A study done for Secretary of War Henry Stimson's staff by William Shockley estimated that conquering Japan would cost 1.7–4 million American casualties, including 400,000–800,000 fatalities, and five to ten million Japanese fatalities. The key assumption was large-scale participation by civilians in the defense of Japan.

In evaluating these estimates, especially those based on projected Japanese troop strength (such as General MacArthur's), it is important to consider what was known about the state of Japanese defenses at the time, as well as the actual condition of those defenses (MacArthur's staff believed Japanese manpower on Kyushu to be roughly 300,000, more than 300 percent below the actual total)

Casual dismissal of the japanese casualties? No, I prefer in a choice of 150,000 dead to several MILLION the 1st figure.