[Fishpicker]

also, the battle of Sekigahara has been done many times on film. one more iteration of that battle probably would not stand out. and it would have cost a lot of money. I'm glad they budgeted the way they did, using the money to nail costumery, wardrobe, set pieces, and period accurate buildings.

if you want to see samurai armies square off with gunpowder there are plenty of options. my favorites are Ran, Kagemusha, and Ten To Chi To (Heaven and Earth)

here is a short film of the Battle at Sekigahara. the title cards will tell you who is fighting who, when and where.