The Brilliant, a Nebula-class Star Destroyer, served within the ranks of the New Republic Defense Fleet.
In 16 ABY, the Brilliant received its assignment to the New Republic Second Battle Group, where its primary duty involved maintaining a tight planetary patrol around Coruscant.
Following the Aramadia incident, where its unauthorized takeoff resulted in damages to nearby vessels, the Brilliant was dispatched to monitor its movements, operating under the orders of Admiral Gial Ackbar. However, Chief of State Leia Organa Solo issued a recall order after Nil Spaar's broadcast, in which he claimed intentions to proclaim himself Empress and that his diplomatic immunities were being breached.