Star Wars Age of Rebellion: Strongholds of the Resistance
Star Wars Age of Rebellion Strongholds of the Resistance - Rules of Play says:
Strongholds of Resistance takes you to worlds that have boldly revolted from Imperial control and to the secret bases which serve as the command centers of the Rebellion. Your team of Rebel operatives might visit several of these locations in your work for the Rebel Alliance, or embark on a series of adventures amid the conflicts and challenging terrain of a single planet. Game Masters can easily integrate these new locations in their ongoing campaigns using the included modular encounters, or even launch a fresh campaign focused on worlds that are actively resisting the evil Empire or on the war efforts of a specific Rebel base.