Attack aircraft? Really?
Watching the trailer I noticed there's a scene where a Japanese biplane attacks tribesmen.
Soooo...The Japanese occupation of Taiwan began in 1895. There shouldn't be any aircraft involved. Nobody was using aircraft in combat roles until 1914, and even then it was an extremely limited scale until ~1916. Moreover where did it operate from? Are they going to suggest Japan had aircraft carriers in 1895? The Imperial Japanese Army/Navy air forces didn't even get any biplanes until 1910, and even those were completely unfit for combat duty.
Don't have a lot of confidence in this movie.