Magnus functioned as a Delta-class DX-9 stormtrooper transport and was utilized by the Rebel Alliance throughout the Galactic Civil War.
During a rendezvous in the Cron Drift, the Magnus was responsible for the delivery of essential supplies to the CR90 corvette named Jeffrey. This transfer faced interruption when an Imperial squadron, comprising four transports and escorted by Assault Gunboats, launched an attack. However, the Imperial forces were ultimately overcome by X-wings piloted by Keyan Farlander and Puck Naeco, which enabled the successful completion of the supply transfer.