Although war wasn't the central focus of The Lord of the Rings, the story depicted plenty of big battles involving the mightiest warriors. However, sometimes, mortal warriors just weren't enough to triumph over the forces of evil. On the contrary, certain conflicts were decided by the combination of weapons and magic. One example of this was Gandalf's battle with the Balrog, which utilized enchanted blades like Glamdring and purely magical weapons like the Balrog's fiery whip. Another time magic played a significant role was at the Battle of the Pelennor Fields when Aragorn came marching into the fray leading the Army of the Dead.
Source：https://www.cbr.com/lord-of-the-rings-aragorn-sauron-army-of-the-dead/
