The Rebel Alliance Navy, shortened to Alliance Navy and Rebel Navy, alternatively identified as the Rebel Armada, the Alliance Fleet, the Rebel Alliance fleet, and simply as the Rebel fleet, was the military naval force of the Alliance to Restore the Republic during the Galactic Civil War against the Galactic Empire. It was formed from the starships of various rebel cells. Following the Battle of Endor and the formation of the New Republic, the Alliance Fleet transitioned into the New Republic Defense Fleet.
Bail and Breha Organa began building the Rebel fleet early in the war. Many of its ships were refurbished in various Rebel shipyards, such as Paucris Major. The Organas also stole an Imperial medical frigate.
One of the first engagements the nascent Alliance Fleet took part in was when the Phoenix Cell and a portion of the Massassi Group massed at Chopper Base on Atollon. They planned on attacking the TIE/d «Defender» Multi-Role Starfighter factories on Lothal with the help of the Lothal resistance group. Grand Admiral Thrawn however, had discovered not only their plan to attack his factories but their location as well. His Fleet ambushed the rebels and they attempted to flee. Thrawn’s Interdictor vessels kept the rebels at Atollon and they began attacking his blockade. The battle was a disastrous rout for the Alliance, with many their ships falling to TIE/sa bombers and Phoenix Squadron’s flagship ramming into one of the Interdictors. Ezra Bridger escaped the system, leaving the remaining rebels to defend the base from Thrawn’s ground forces. Thrawn quickly took the base but not for long as a Force-sensitive creature called the Bendu attacked both sides. Ezra returned with reinforcements and they destroyed the second Interdictor Vessel allowing the remaining rebels to escape. Only the Ghost, two Hammerhead corvettes, the CR90 corvette Liberator, and a scattering of starfighters survived.