"Flags of Our Fathers": Whose fathers flags?

I saw the film "Flags of Our Fathers" directed by Clint Eastwood. It was a heavy movie. As an article on the film puts it: "Clint has two movies coming out before year's end. That is, two separate movies with the same story. Actually not the same story; not even the same language. Just the same setting."
(http://kawaiino.vox.com/library/posts/tags/iwojima+kara+no+tegami/)
"Flags of Our Fathers" was taken from the viewpoint of Americans, while another film has been already made from the Japanese point of view, to make them a kind of twin movies. That, in itself, is a very volitional project. I appreciate their efforts. When, I wonder, will another film be taken from the third standpoint? Iwojima, the stage of the films, is an isle of Ogasawara islands. In the sea area, there used to live people who spoke the Pigin language, neither Japanese nor English. One day, one "they" came there and occupied the islets. Another day witnessed another "they" come. The two, "they" and "they", coordinated to destroy a tiny isle, in the form of a battle though. After the battle, "they" kept occupying the islands until they passed their government to another them. Now the Pigin language is second to extinct.