During the Galactic Empire's reign, Saw Gerrera and his Partisans initiated an insurgency on Onderon, which was his home planet. The conflict deeply unsettled the planet, causing the Empire to try and put down the uprising by sending in forces like Agent Kallus' squad and using bombing runs on rebel locations. An Alliance to Restore the Republic Pathfinder, Euwood Gor, gave up a significant portion of his previous existence to participate in the Onderon fight, integrating with Gerrera's Partisans and fully embracing their way of life.
Ultimately, the Partisans' insurgency was unsuccessful; Gerrera determined that victory on his homeworld was unattainable and consequently departed.