You could use the back ground music from “Pearl Harbour” for the Japanese. (I know the movie is weak)
You know what I mean? Everytime a scene from the moive cuts to the Japs this awesome drum beat kicks in. The best part of that movie is the scene that has a far away shot of Hawaii then a one Zero flies into frame and then another and another until the whole sky is filled with Jap Zeros and that deep, epic, drumming is going on……tight. I get goose bumps watching it.
Now that I’m thinking about it, in addition to the drumming there is some flutie type piping going on. It sounds very “far easty”