I would recommend these answers

By /u/ryamano

https://old.reddit.com/r/AskHistorians/comments/9ct41z/the_last_samurai_samurais/e5e5blw/

I have a feeling that the film you are watching was The Last Samurai with Tom Cruise, and this answer by /u/AsiaExpert has good details on the historical context for that movie:

https://www.reddit.com/r/AskHistorians/comments/12zp30/what_work_has_done_the_most_damage_to_your_field/c6zmm1p?utm_source=share&utm_medium=web2x