However, from my experience with the Japanese and my limited exposure to the WWII aspect . . . I think there are some significant differences.
The Japanese must have had a kind of elegant, chilvarous, dying for Emporer-god, country and family--a rather sobered, honor-bound, sterile, fate sort of single mindedness. . . . quite possibly some demonic influence but not the overt coarse kind, a more subtle slick kind.
With the Islamists, it's interesting--they more resemble the worst of the animal they deplore--kind of a cross bewteen a rabid b*tch dog and a wild boar. . . mayhem incorporated. . . blind, viscious, gory, drunken hillbilly ruthlessness. . . . a kind of idiot's IQ of 20's glib gah gah fixation on images of umpteen virgins and unlimited sex; dramatic blood, dismemberment, gore and anguish on the part of one's obsessively reviled enemies etc.
The Japanese could have respect for their enemies even at the point of killing them.
The Islamists seem to respect nothing but their own mindless fantasies and the pseudo phallis glory of their sticks of dynamite etc.
I suppose if the biggest thrill you've been able to look forward to is a wet dream in your sleep, going out with a big bang could have some real attraction.
Their book is a messy hodge podge. Their reasoning hardly qualifies for rational. Their tribal infighting has historically been the height of messy. Their values are messy. Not too surprising that they fixate on messy dying. Their father is the father of lies and chaos.
I read a fascinating essay about the Rape of Nanking in Newsweek a few years back. Inflamed by their divine emporer cult, young men of Japan perptrated acts of almost unimaginable barbarity against their Chinese victims: burying people up their heads in sand and leaving them to starve, decapitating young children and keeping the heads as souvenirs, and so on. The story told of an old man, now a physician, who had participated in such crimes in his youth. Now, he has a videotape about the atrocities playing in his waiting room full-time, his way of atoning for the crimes he commited as a youthful soldier of the Empire of the Sun. The story was a fascinating insight into the extraordinary capacity for good and evil in Japanese culture.
America's help rebuilding after World War II has created our most reliable ally in Asia. The Japanese do a lot of things for America out of on and giri.
Contrast that to the Muslim Fundy concept, with just a couple of examples