I’m looking for a book that involves a war setting where swords demons or otherworldly creatures are involved in a humanity vs them is the main theme.

I like to read about castles, big medieval battles demons etc. Think Tolkien on steroids, I want something very action paced with no love story if possible I’ve read the storm light archives but couldn’t finish it, I read the mistborn series which I loved, I’m not looking for anything sci fi or modern or maybe sci fi if it involves demons but strictly looking for sword battles against the unknown I really loved the setting for the red knight.