Japanese language used in film
Some years ago I heard a bit part actor tell a story about this film on the radio (in the U.K.)
He said that the director wanted to make the battle scenes more realistic by have the japanese characters (played by philippinos I believe) speaking japanese. Unfortunately no-one knew any japanese but someone had a brain wave: if they used the phrases 'I tie my shoe' and 'you tie your shoe', speaking them in a japanese style, it would effectively sound like japanese (try it!). And so this is what they did.
When this film was last on in the U.K I tried to watch it to see if this was really true. Unfortunately the film was so awful that I couldn't watch it right through and can't confirm the story (if there's a next time I'll record it and watch it in tolerable portions!).
It's a good story anyway.