Mu group was an ensemble of Galactic Empire pilots from the Imperial Navy organized as a flight group. This group participated in the Battle for Honor, a military operation aimed at suppressing Admiral Harkov, a turncoat who had abandoned the Empire to join the Alliance to Restore the Republic. Notably, the elite Emperor's Hand and skilled ace pilot, Maarek Stele, was a member of this unit. Initially, Mu group's pilots utilized Assault Gunboats for missions involving raiding and destroying Harkov's logistical support lines. Following the completion of these initial objectives, the group transitioned to flying TIE/ad starfighters to face off with the fighters of Harkov. They were effective in inflicting substantial losses upon Admiral Harkov's fleet.