Mu group was a flight of Imperial Navy pilots of the Galactic Empire that took part in the Battle for Honor, a campaign against the traitorous Admiral Harkov, who defected to the Alliance to Restore the Republic. The unit included the ace pilot and Emperor's Hand, Maarek Stele. Pilots of Mu group flew Assault Gunboats initially, when raiding and destroying his supply convoys. However, once that was finished, the group later switched to TIE/ad starfighters, to face off against Harkov's fighters. They successfully gave Harkov's fleet large casualties.