The title of this article is conjectural.

Although this article is based on canonical information, the actual name of this subject is pure conjecture.

"Now that the war is winding down—"
"Winding down. It's not over?"
"Pockets of resistance remain, especially on Umbara. Our forces are engaging in several, shall we say, pacification exercises to bring about a lasting peace."
―Lieutenant Commander Orson Callan Krennic and Lyra Erso — (audio) Listen (file info)[1]

In 19 BBY, a rebellion against the Galactic Empire occurred on the Expansion Region planet Umbara. During the early months of the Imperial Era, the Imperial Military was deployed to put down the resistance as part of a wider anti-insurgent campaign, with Lieutenant Commander Orson Callan Krennic framing it as a pacification operation.


"We did it. We took Umbara."
―Republic ARC trooper CT-5555 "Fives" during the Clone Wars — (audio) Listen (file info)[3]

During the Clone Wars, a galactic conflict fought between the Confederacy of Independent Systems and the Galactic Republic, the Expansion Region planet of Umbara left the Republic after the assassination of its senator, Mee Deechi,[4] and became a major Confederate stronghold.[5] Thus, the 501st Legion and 7th Sky Corps of the Grand Army of the Republic were deployed to invade and take back Umbara[6] in 20 BBY.[7] Despite heavy resistance, the Republic overwhelmed the Umbaran Militia's impressive defense. The battle was a devastating defeat for the Umbaran government,[5] with even its capital falling to the Republic Army.[3]

The rebellion[]

Previously the site of a battle during the Clone Wars, Umbara was again home to fighting during the early Imperial Era.

In 19 BBY,[8] concurrent to the end of the Clone Wars, the Republic was transitioned into the Galactic Empire by Supreme Chancellor Sheev Palpatine.[9] In 19 BBY,[2] a resistance movement emerged on Umbara, seeking to continue the fight against the Empire despite the Confederacy's defeat.[1]

In the months following the Empire's proclamation, the newly-formed Imperial Military was deployed to combat various pockets of resistance left over from the Clone Wars. One of the ensuing battlefronts was Umbara, with the rebel movement putting up a heavy resistance. When speaking to researchers Lyra Erso and Galen Walton Erso, Lieutenant Commander Orson Callan Krennic claimed the Empire had simply launched a series of pacification exercises to quell the rebellions on Umbara and elsewhere, stating the Imperial response would bring about peace.[1]


"Umbara was one of the major Separatist planets. The locals fought pretty hard, and got stomped pretty solidly. Hard to believe they'd want to go through that again."
―Eli Vanto — (audio) Listen (file info)[5]

Eventually, Umbara became part of the Empire, further surrendering its remaining autonomy due to the massive debt it owed to the regime.[10] Imperial Ensign Eli N. Vanto believed it would be unlikely for the Umbarans to risk another devastating defeat, as had occurred during the Clone Wars, by resisting. When the Umbara system nevertheless once again became the site of fighting against the Empire, the battle had been instigated by human insurgent leader Nevil Cygni instead of the Umbarans; the rebel wanted to ensure the Empire would take over Umbara's mining industry, knowing it would be easier to bribe Imperial inspectors than Umbaran ones.[5]

Behind the scenes[]

The rebellion on Umbara was mentioned in the 2016 novel Catalyst: A Rogue One Novel by James Luceno.[1]


Notes and references[]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Catalyst: A Rogue One Novel
  2. 2.0 2.1 Star Wars: Rogue One: The Ultimate Visual Guide states that Galen Walton Erso was recruited into Project Celestial Power by Orson Callan Krennic 19 years before the events of Rogue One: A Star Wars Story. As the events of Rogue One are dated to 0 BBY by Star Wars: Galactic Atlas, Erso was recruited in 19 BBY. Catalyst: A Rogue One Novel depicts the recruitment in the same chapter Krennic mentions the rebellion on Umbara, meaning the rebellion must have also taken place in 19 BBY.
  3. 3.0 3.1 TCW mini logo.jpg Star Wars: The Clone Wars – "Carnage of Krell"
  4. Ultimate Star Wars, New Edition
  5. 5.0 5.1 5.2 5.3 Thrawn
  6. TCW mini logo.jpg Star Wars: The Clone Wars – "Darkness on Umbara"
  7. Star Wars: Galactic Atlas places both the Battle of Mon Cala, which is depicted in the Star Wars: The Clone Wars episodes "Water War," "Gungan Attack," and "Prisoners," and the skirmish in Theed, depicted in "Crisis on Naboo," in 20 BBY. As the Battle of Umbara was depicted in the episodes "Darkness on Umbara," "The General," "Plan of Dissent," and "Carnage of Krell," the events of which are set between those of "Prisoners" and "Crisis on Naboo" according to StarWars.com Star Wars: The Clone Wars Chronological Episode Order on StarWars.com (backup link), the battle must also take place in 20 BBY.
  8. Star Wars: Galactic Atlas
  9. Star Wars: Episode III Revenge of the Sith
  10. Leia, Princess of Alderaan
In other languages