Complex sentence: Also somewhat unorthodox is that scenes depicting Japanese staff officers were performed in Japanese, with only summary translations provided by the narrator, which are remarkably even-handed in their characterization for an American feature film of this period.
Split into simpler sentences: Also somewhat unorthodox is that scenes depicting Japanese staff officers were performed in Japanese, with only summary translations provided by the narrator. This narration was remarkably evenhanded in its characterization of the enemy for an American feature film of this period.