It was a Canadian television production. They rented what they were offered - the only question is who rented them? Oh yeah, and who was the dumbass technical advisor?
Not a bad program otherwise... I was expecting a total anti-war, anti-American thing, but they seemed to do a pretty good job, ie the Japanese started it, took it to barbaric lengths and would have dropped the same on us in a heartbeat if they'd had it (as would the Nazis). I have to say I'm rather sick and tired of the WW2 apologists - the other guys started it and behaved abominably, but we finished it. End of story.