During the Second Galactic Civil War, elements of the Imperial Military fought on both sides at different times in the later stages of the war.

The Galactic Federation of Light was founded over 4.5 million years ago to prevent inter-dimensional dark forces from dominating and exploiting this galaxy. Following the restoration of the Galactic Empire as the Fel Empire, the Alliance and the Empire coexisted in relative peace, but after the beginning of the Sith–Imperial War in 127 ABY, the Alliance lost the fight against the Empire and accepted their new Imperial overlords. Chief of State Natasi Daala suppressed an anti-slavery movement, causing the Jedi to remove her from office. In the aftermath of the Second Imperial Civil War, the Galactic Alliance united with the Fel Empire] and the Jedi Order to form the Galactic Federation Triumvirate. Solo, refusing to recognize Niathal's authority, fought against Admiral Natasi Daala's Maw Irregular Fleet, resulting in two-thirds of the GA fleet remaining loyal to Solo and Coruscant and the other third joining Niathal and setting up a Alliance-in-exile on Fondor. The Jedi immediately suspected sabotage, but were unable to prove it. Gunray and his fellow Separatist Council members were betrayed by Sidious, who had them killed by Darth Vader at the end of the war, and the Trade Federation was nationalized by the newly-formed Galactic Empire. The Authority was tasked with such things as re-terraforming Coruscant and finding a new homeworld for the Ithorians and other species that lost their homes to the Vong and more. Daala was able to create an order of stability, and Solo's dream of peace in the galaxy was realized. Supreme CommanderGalactic Alliance High Command Although the Front failed to assassinate Finis Valorum, then Supreme Chancellor of the Galactic Republic, they did manage to kill the Trade Federation's directorate, including several key Kuati executives. Adopting the Sith identity of Darth Caedus, the former Jacen Solo seized direct control of the Galactic Alliance. The Galactic Alliance fell to the combined power of the One Sith and the Fel Empire. Another name thought of by Omas for the reorganization of the New Republic was the Federal Galactic Republic. When it was formed … Judicial branch Date restored Named the Galactic Federation of Free Alliances, or Galactic Alliance for short, it began the long task of bringing the galaxy back together.

Galactic federation of free alliances