During the Galactic War, the Galactic Republic launched an operation, codenamed Zosha Advance, above the planet of Zosha. This operation, sanctioned by the Republic Navy, saw members of the Coruscant Aegis Squadron, with support from the Navy, attempting to obliterate the notorious Harrower-class dreadnought called Scream of Ragnos. The dreadnought was under the protection of several vessels from the Sith Empire's Imperial Armada.
The Scream of Ragnos, a Harrower-class dreadnought within the Imperial Armada's fleet, was captained by Sith Lord Javis Koldor. This vessel played a significant role in the Sacking of Coruscant, resulting in the deaths of numerous Republic citizens. Upon Republic intelligence discovering its involvement in an escort assignment, they resolved to exploit the opportunity to eliminate it. To achieve this, a member of the Coruscant Aegis Squadron was dispatched, accompanied by at least three Thranta-class corvettes for support.
As soon as they arrived, the Republic forces initiated an assault on the Scream of Ragnos and its accompanying ships. The three Imperial escort ships each attempted to engage the Republic fleet, sustaining significant damage in the process. The squadron member pressed on towards the Scream of Ragnos, engaging Mark VI Supremacy-class starfighters and the escorts as they approached the capital ship. The hero's mission involved disabling four shield generators and destroying twelve laser cannons on the Scream of Ragnos, alongside neutralizing 75 interceptors if the chance presented itself. As the battle unfolded, three additional Terminus-class destroyers arrived to reinforce the Scream of Ragnos, with one being destroyed immediately after its arrival. The battle concluded shortly after it began, with the hero departing Zosha's atmosphere, leaving the destroyed Imperial warship in orbit around the planet.
The Zosha Advance was developed for Star Wars: The Old Republic, a massively multiplayer online role-playing game launched by BioWare on December 20, 2011. It is featured as one of the initial enhanced Space Combat missions available to Republic players. In the Space Combat scenario, players are required to destroy four of the Scream of Ragnos's shield generators and then fourteen of the ship's sixteen turbolasers. The battle also incorporates two bonus objectives. The first involves eliminating a total of 75 Mark VI interceptors or turrets on the defending ships. A hidden bonus mission, which can only be completed once per day, entails inflicting sufficient damage to the Scream of Ragnos's bridge using proton torpedoes to ensure the ship's destruction. This mission served as an upgraded iteration of the Makem Te Assault.