The 2009 film Avatar may not have the kind of fanbase that Star Wars has, but four sequels are slated to be released over the 2020 decade, so it’s worth mentioning the climactic battle fought in the film between the Na’Vi and the humans.
The battle is very fast paced and fought on a grand scale, with the more primitive Na’Vi uniting and increasing their number by the thousands to fight the humans. If anything, the battle is reminiscent of the Battle of Endor where the primitive Ewoks were able to overcome the technologically and numerically superior legion of Stormtroopers.
Is it realistic? Probably not. But it’s still very entertaining.