On the planet Umbara, the native Umbarans maintained an airbase that served as a supply line to the planet's capital. During the Battle of Umbara the 501st Legion commanded by Jedi General Pong Krell took over the airbase after clone troopers Hardcase and Fives were able to obtain Umbaran Starfighters and clear the Republic's path to the airbase. It then served as the command center for 501st Legion afterward.
- Star Wars: The Clone Wars – "The General" (First appearance)
- Star Wars: The Clone Wars – "Plan of Dissent"
- Star Wars: The Clone Wars – "Carnage of Krell"