Fairly lengthy war drama without glorification, but even without big goal

For some it is lengthy, which may Esch one another as a grand narrative in the cinema. But with me it lacked a reliable story, characters, at which opens the drama. It seems to me the script was missing the crucial compacting the story. Although we a bit of Japanese taste values ​​(honor the emperor, loss of face, etc), these seem too thin to be fundamental for the film. Too bad.