Level Five
The French computer programmer Laura inherits the task of making a computer game of the Battle of Okinawa in Japan during World War 2. She searches the Internet for information on the battle, and interviews Japanese experts and witnesses.
Starring Catherine Belkhodja, Nagisa Ōshima, Chris Marker
Watch "Level Five" on Mubi released in 1997. It's a documentary and war movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.