The Battle of Spirana represents one particular conflict within the New Republic's broader effort to liberate territories following the Battle of Endor.
Following the conclusion of the Nagai–Tof War, the New Republic initiated its primary campaign focused on liberating planets from the Empire's control. The New Republic Fourth Fleet received orders to retake the Corellian Run. Following the Republic's victory on Milagro, Imperial Admiral Uther Kermen fell back to Spirana, and from that location, he initiated a raid targeting Milagro. Admiral Voon Massa responded swiftly, issuing orders to attack the world.
In the aftermath, the New Republic forces uncovered intelligence suggesting that roughly ten thousand TIE Defenders remained missing following the significant Imperial defeat.