It's pretty much Girl Boss the movie. Every female character is the best and baddest. The choreography is just dumb. You have battalion level strength with air cover, and armor and you lose to people charging with axes and laser muskets?? Yes the villagers have guns that look like muskets and fire one pew pew at a time.
The zombies in Dawn of the Dead were a bigger threat than a space faring war machine that has been at war for centuries?
I can't watch Rebel Moon or take it even remotely seriously because of all the names they could have used, they picked the title, verbatim, of a Vox Day novel from the 90's.
I don't think anyone should take Rebel Moon seriously, it's a very silly project.