Involving medieval war movies I can't really chose a favorite. I hate movies with protagonists/heros larger than life and lets face it almost any war movie coming from Hollywood has this 'flaw'. Still I liked the battle scenes in bravehart.

The war movies I like have anti-heros or better still no heros at all. "When trumpets fade" is one of my favorite war movies. It's about a WWII battle with a coward as the main character leading his squad of fresh recruits to their deaths. Of course there are also the classics: Platoon and Apocalypse now.