[member="Jayce Pryde"]
Per the Faction rules:
“5. Only a Major Faction has the resources necessary to role-play having a large fleet, army, etc.”
Furthermore, only a Major Faction can actively ‘claim’ a planet and have that claim represented on the map. So from a board rules sort of perspective, throwing the First Order off of Endor isn’t exactly feasible.
Beyond that, from an IC perspective, you’re talking about a single Sith Lord trying to tackle one of the largest and most established galaxy-spanning governments on the board, with a nearly untarnished military reputation, despite not utilizing force users en masse. Given that the map does not represent all the planets in the galaxy (remember that the Republic was supposed to consist of a million inhabited worlds) you’re talking trying to go solo against potentially hundreds of Knights of Ren, Star Destroyers, thousands of stormtroopers and anti-force user specialists and millions of conventional soldiers.
A minor faction or union of them could manage it, and there’s rules that allow for that, but you haven’t even got that. I would recommend looking into alternative ways to establish yourself on Endor, beyond outright military conflict.