The assault on the Aparo sector was an offensive launched by the Sith Empire in the early days of the Great Galactic War. Following the Sith's return to known space, the Galactic Republic was slow to mobilize an effective defense. As a result, the Republic's allies in the Aparo sector of the Outer Rim Territories were wholly undefended and one of the Empire's first targets. The Imperial assault on the sector was a success, forcing the Republic's allies to give in to the Sith and change allegiances.
The Imperial assault was swift and effective, beginning and ending before the Republic was able to mount an organized defense of the sector. The Imperial military invaded the worlds of the Aparo sector with Sith soldiers and war droids, quickly overrunning the native defenders. As a result of the Republic's inability to combat the Empire, the governments of the Aparo sector abandoned their ally and defected to the Sith Empire.[1]
Following the assault on the Aparo sector and the defection of the governments of Aparo, the Republic attempted to launch an offensive against the Empire throughout the Tingel Arm. However, the Republic's former allies on Belkadan and Sernpidal[1] of the Dalonbian sector,[4] and Ruuria[1] in the Xappyh sector,[4] had also fallen to the Sith. Much like the Aparo sector, these worlds had become subservient to the Empire.[1] As a result, instead of combating the Empire alongside the natives of these worlds, the Republic fleet was caught within enemy territory, fighting for survival.[1] These opening battles of the Great Galactic War put the Republic on the defensive for several decades and contributed to the Empire's ultimate victory twenty-eight years later.[5] Following the close of the war, the assault on the Aparo sector was included in Jedi MasterGnost-Dural's recounting of the beginning of the Sith invasion.[1]