The Quell system was located in the Outer Rim Territories and contained the planet Quell. Throughout the Clone Wars, the star system was heavily contested by both of the war's sides' respective forces, including the Separatist Providence-class Dreadnought Lucid Voice.
In 21 BBY, during the war, Quell served as the site of an engagement between a Galactic Republic task force led by Jedi General Aayla Secura and a Confederacy naval squadron commanded by T-series tactical droid TF-1726. During the battle, the Confederacy was able to inflict heavy casualties upon the Republic's forces, while also claiming victory in the end.
The Quell system was located in the distant reaches of the galaxy, in the regions known as the Outer Rim Territories and the New Territories. Situated in grid square Q-6 on the Standard Galactic Grid, the star system contained the planet Quell, which was located in its far reaches. It was also located along the Salin Corridor hyperspace route, which connected the system to the astronomical object Yalbec Prime and the planet Lola Sayu.
Throughout the Clone Wars fought between the Galactic Republic and Confederacy of Independent Systems, the Quell system was heavily contested by both of the warring factions' forces, which included the Confederacy's Providence-class Dreadnought Lucid Voice. During the war, in 21 BBY, the upper atmosphere of Quell served as the site of a battle, where a Republic task force of Venator-class Star Destroyers led by Jedi General Aayla Secura was assaulted by a Confederacy naval squadron of Munificent-class star frigates commanded by the T-series military strategic analysis and tactics droid TF-1726.
During the battle, which led to heavy Republic casualties that included the loss of all three of Secura's Star Destroyers, the Jedi Master managed to escape the destruction of her flagship, the Liberty, as well as the battle with the help of fellow Jedi General Anakin Skywalker; his Padawan, Ahsoka Tano; and Clone Captain CT-7567. Arriving in the Quell system aboard their Venator, the Resolute, in order to aid in Secura's engagement with the Separatist squadron, Skywalker used a rescue frigate to dock with Secura's starship and retrieve her before its destruction. However, during the Jedi escape from the Star Destroyer, the frigate suffered damage, which resulted in the activation of its hyperdrive and subsequent jump through hyperspace to the planet Maridun.
The Battle of Quell was an unqualified victory for the Confederacy, and it revealed that the Republic initially struggled to maintain control in the Outer Rim, a region where acts of separatism had flourished by that time. Furthermore, the battle proved that the Republic's ultimate triumph in the war would not be easily won. Sometime after her defeat at Quell, between 20 BBY and 19 BBY, Secura and her clone troopers from the 327th Star Corps returned to the planet's surface, where they engaged in combat with an adversary.
The Quell system first appeared in "Jedi Crash," the thirteenth episode of the first season of the Star Wars: The Clone Wars television series, which aired on January 16, 2009. The system was identified in the episode's opening newsreel. The episode's script described the Battle of Quell as taking place within space around Quell, but the engagement was instead moved to the planet's upper atmosphere for dramatic effect as the show entered pre-production.
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