I doubt Clint will mention in his movie that what caused most of the Japanese dead in Iwo Jima was their culture of death (not that different from today's muslims) which preferred death to being captured. The crime against humanity that they committed was convincing the local Japanese civilian population that if they were captured by Americans they were going to be tortured, raped, and killed. Thousands of them committed suicide instead. Shame on Clint.
Let's wait and see, Clint is one of the good guys after all.