The island of Iwo Jima stands between the American military force and the home islands of Japan. Therefore the Imperial Japanese Army is desperate to prevent it from falling into American hands and providing a launching point for an invasion of Japan. Storyline: The island of Iwo Jima stands between the American military force and the home islands of Japan. Therefore the Imperial Japanese Army is desperate to prevent it from falling into American hands and providing a launching point for an invasion of Japan. Letters From Iwo Jima is based on actual letters from Japanese forces on Iwo to their families back home. Flashbacks to revealing incidents in their past play an equally important role. Excerpts from island commander Tadamichi Kuribayashi down to the lowliest soldier are incorporated in the script.