"So, the rebels have aquiered some old tech."-Imperial Captain Kosh
Rebel Battle Droids are the names given to any class of Battle Droid that were captured and/or reprogramed by the Rebel Alliance and used to fight the Galactic Empire. Most of the droids gained by the rebels were originally used by the Confederacy of Independent Systems, while the rest were deactivated by the Empire and put in storage houses that were not placed under heavy guard, allowing rebel soldiers to ambush them and reprogram all the battle droids inside. Rebel Battle Droids include B1-Battle Droids, B2 Super Battle Droids, IG-227 Hailfire Droids, and Droideka Sentinels. The rebels were also able to capture at least one Confederate Command Ship from the Clone Wars and modified it into The Rebel One. In the expanded universe, the New Republic would still use battle droids. For example, during the final years of the New Galactic Civil War, the New Republic used a squadron of B2 Super Battle Droids to fight a large swarm of very hostile Fire-Breathers. Some of these droids were repainted blue or red to match the rebel symbol.