American Guerrilla in the Philippines

It's not really about what I thought of the film - I note military and naval experts have commented on various inaccuracies. This is more a comment on an aspect of the film, which I saw many years ago in b/w, and got a greater insight into when seeing the Canadian commentator Elwy Yost's programmes on cinema history in the 1970's. How many viewers realise that the reason the heroine (the Filipino hero's wife) is cast as a Frenchwoman? This is not to make the story more romantic, or as a tribute to 'our gallant wartime allies' or even because the actress might be French, but because in those days to comply with the Hayes Code, the heroine, if she gets the white hero in the end (or vice versa!) has to be white!