From the Publisher:

While the shadow of the Empire seems to loom over every corner of the galaxy, there are small beacons of light for those who would fight back. A handful of hidden bases and sympathetic worlds work in secret to further the cause of the Rebel Alliance and, one day, bring freedom to the galaxy.

Fight back against the oppression of the Galactic Empire with Strongholds of Resistance. Fly sorties among the asteroids of Polis Massa, engage in political debate in the glittering cities of Chandrila, and fight a guerilla war in the depths of Sullust. This book contains everything that a group of daring Rebels needs to navigate the hostile galaxy.

This sourcebook includes:

• Detailed profiles for the major worlds and hidden bases that conceal the agents of the Rebellion.
• Three new species options found on these worlds.
• New weapons, equipment, and vehicles used by the Rebel Alliance in the fight against the Empire.
• Four modular encounters that GMs can use to include these worlds in an existing narrative or craft an ongoing adventure centered around the Galactic Civil War.