Galactic Alliance Defense Force The Galactic Alliance Defense Force ( GADF ) also known as the Galactic Alliance Armed Forces or the Galactic Alliance military were the military forces of the Galactic Federation of Free Alliances . Like its predecessor , the Combined Defense Forces of the New Republic , the GADF comprised the Galactic Alliance Defense Fleet , Galactic Alliance Starfighter Corps , and the Galactic Alliance Army . History . After the Fall of Coruscant . Following the near total breakdown of the New Republic government in the aftermath of the Battle of Coruscant , the remaining senators and military units regrouped on Mon Calamari , which had thus far been outside the invasion corridor . As the government struggled to re - establish order and elect a new Chief of State , the New Republic Defense Force remained on the defensive , scattered amongst numerous worlds and commanders . Some , like Admiral Traest Kre ' fey , continued to take orders from the Defense Force high command . Others , like Garm Bel Iblis , gathered remaining fleet units and held on to individual regions of space , acting independent of the government . All of this began to change following the Chief of State election . When Cal Omas was elected the new Chief of State , the government began to reform and reorganize . The new stability in the government was coupled by the return of aging retired admiral Gial Ackbar , who worked with Chief Omas and then - current Supreme Commander Sien Sovv to ready the New Republic military for a major offensive . Following the major victory at the Battle of Ebaq , the New Republic was reorganized into the Galactic Federation of Free Alliances . Victory over the Yuuzhan Vong . The Galactic Alliance Defense Force was initially established out of the former New Republic Defense Force following the reorganization of the government into the new Galactic Alliance . The fleets of the Galactic Alliance slowly began to turn the tide of battle , liberating key worlds like Fondor and Yag ' Dhul . Despite some setbacks , like the Battle of Bilbringi , the Defense Force continued to gather its strength in preparation for the coming end of the war . The fleets of the Defense Force defended Mon Calamari from invasion and led the Battle of Yuuzhan ' tar . Post war years , 30 - 35 ABY . Following the end of the war against the Yuuzhan Vong , the Defense Force remained active . It was expanded to five strategic fleets , a direct nod to the previous five fleet structure of the old NRDF . With the majority of the known galaxy allied with the new government , the Defense Force concentrated on routing out the numerous pirate bands that rose up following the war . As the galaxy continued its reconstruction , the Defense Force worked alongside the New Jedi Order in bringing stability and maintaining the peace . The Swarm War . The first major conflict that the Defense Force fought following the resolution of the Yuuzhan Vong war occurred in 35 ABY , when the Killik hives were rediscovered in the Unknown Regions . The subsequent campaign , known as the Swarm War , nearly erupted into full scale galactic conflict . Defense Force fleets participated in numerous engagements , including the defense of the Roche Asteroids and the Battle of Tenupe . Second Galactic Civil War . In the years following the resolution of the Swarm War , some of the more independent Alliance member worlds began to view the government as a new Empire , due to increased regulations . This crisis threatened to blow up into a new civil war . As diplomatic efforts on both sides began to break down , the Defense Force deployed a task force of the Second Fleet to Corellia in a display of military might . Shortly after the breaking of the blockade , Commenor and Bothawui joined Corellia , and the Confederation was formed , along with the newly unified Confederation Fleet . Other planets soon followed ; Fondor , Bespin , and Adumar prominent among them . During this time , the GADF and the Confederation Fleet were locked in a state of standoff , with both sides concentrating more on preparing for an inevitable war rather than a direct assault ; instead making sporadic and minor raids against each other . Thus the Battle of Gilatter VIII was the first major fleet action against one another . Actions intensified in Bothan Space , as Alliance fleet units engaged a Bothan flotilla during the Battle of Bothawui . Sith – Imperial War . The Sith – Imperial War ended with the defeat of the Galactic Alliance , following the loss of their capital of Coruscant . While most of the galaxy was subsequently once again under the control of the new Empire , the remnants of the Galactic Alliance military , in the form of the Galactic Alliance Core Fleet , continued the fight against the Empire , which itself broke off into two rival factions , one of which stayed loyal to the deposed Emperor Roan Fel . The other remained under the control of Darth Krayt , who usurped Fel ' s throne and claimed the Empire for himself . It was against the Sith ' s faction that both the Core Fleet and Roan Fel ' s faction continued to fight against . Organization . Command . The Galactic Alliance Defense Force was under the overall command of the Supreme Commander , who was appointed by the Chief of State and approved by the Senate . The Supreme Commander , who in keeping with tradition was a full admiral , served as the highest uniformed officer in the Defense Force , answering only to the Chief of State . The GADF mantained its headquarters on Coruscant , in the new Defense Force Command Compound . Presumably Galactic Alliance High Command also had oversight of the Defense Force . Fleet . The naval forces of the GADF was known as the Galactic Alliance Navy , or " Defense Fleet " . The overall structure of the fleet was modeled on the older New Republic Navy , with five strategic fleets serving as main units of operation for the Alliance . It presumably also maintained static sector fleets , coupled with private planetary navies . These federal forces were augmented by fleets of various member states , like the Imperial Remnant or Hapes Consortium . For the first year of the Alliance ' s existence , the fleets remained fairly unorganized , grouped to individual commanders or assigned to various key worlds , like Kuat , Mon Calamari , Corellia , or Kashyyyk . In the final months of the war , the Defense Force was reorganized into the system modeled after the old Defense Force . Numbered fleets were established , forming a strategic arm of the Alliance military . Original fleets of the navy : As of the Second Galactic Civil War , the Alliance government added the following fleets : The fleets were reorganized as such before the Sith – Imperial War : Marines . In addition to the fleets , the navy kept Marines as ship - to - ship assault and defense units , just as they did previously in the New Republic Navy . Starfighter Corps . The Defense Force ' s Starfighter Corps was the successor of the New Republic version . Rogue Squadron was just as famous as it was in the previous . Army . Like its forerunner the New Republic Army , the ground forces of the Galactic Alliance were the less glamorous of the three components of the Defense Force , but no less important . Alliance ground forces and commando units played a major role in several ground engagements during the latter portion of the Yuuzhan Vong War , including the capture of Ylesia and the Battle of Yuuzhan ' tar .