Excalibur - The Siege of Camylarde
Fun fact: The director of Excalibur (1981) wanted the focus to be on the story, so he insisted that for certain roles, actors who weren’t well known in the US should be cast. Actors like Liam Neeson, Patrick Stewart, and Gabriel Bryne, and Helen Mirren to name a few.
Originally, they were going attempting to film The Lord of The Rings, but the rights couldn’t be acquired, so they went ahead with the Excalibur script instead.