> American casualty estimates exceeded 500,000, and Japanese fatalities were expected to be in the millions—with some projections placing them between 5 million

> American casualty estimates exceeded 500,000, and Japanese fatalities were expected to be in the millions—with some projections placing them between 5 million and 10 million depending on the length and scope of the conflict. Per Barrett, some Japan leadership said that as many as 20M Japanese (civilians) would die in a defence of an invasion (but also because of starvation and such), and the leadership was fine with that.