A member of the Alliance to Restore the Republic, who was a male human, functioned as a controller for the Rebellion while they occupied Echo Base located on the planet Hoth for a certain time period. During the Battle of Hoth, Darth Vader, a Dark Lord of the Sith leading the forces of the Galactic Empire, successfully breached the base's defenses. The rebel announced via the base's public address system that Imperial snowtroopers had managed to enter the base.