But what I meant was:
They never retreated. They stood their ground and fought to the last man. They were more patriotic then we were. It took 2, 2 nuclear weapons to finally break their spirit. It's the whole: "This is my country. You are the enemy of my country. You are in my country. I shall kill you, be it in any way I can."
And the Banzai thing, was used when they were out of ammunition or were close to being over-run. And Banzai charges were deadly effective, around 3/15 American soldiers were killed in each Banzai Charge. There was no true line between Retreat or Final Breath when it came to the bitter end of the Pacific Theatre.
"They're either incredibly brave or incredibly stupid."
I don't think all banzai charges were as well thought out as you make it sound (running out of ammunition or about to be overrun). In a lot of the engagements they outnumbered Marines and one reason why Marines may have even stood a chance in each engagement (when outnaumbered) were because of the suicidal charges. A waste of men if you ask me.
Imperial Japan, from a research perspective, would be an interesting piece. However, by personal opinion of course, I have a hard time respecting Japan during the Pacific Theatre or WWII in general. Their patriotism made them mean motherfuckers (to put it bluntly).
I have to admit though, I just finished watching The Pacific in HD, all episodes one after the other, on HBO