181st Imperial Fighter Group
this was the TIE Fighter squadron made famous by Soontir Fel during the early years of the New Republic. It was originally a full Wing, but was downsized shortly after the Battle of Yavin. The 181st served during the Battle of Endor, and fled after Captain Pellaeon ordered the retreat of the Imperial forces after the death of Emperor Palpatine. It was believed that this group was assigned to Warlord Zsinj's fleet, although the exact reasons weren't discovered until Admiral Rogriss revealed that the actual 181st was still an Imperial unit. Zsinj himself had created a duplicate 181st, with Tetran Cowall acting as Soontir Fel, in the hopes of drawing Rogue Squadron into a trap.