Prior to the Dissolution of the Imperial Senate in 0 BBY, an event occurred where a senator within the Imperial Senate advocated for a raid by the 181st Imperial Fighter Wing of the Galactic Empire's Starfighter Corps against the Alliance to Restore the Republic. This operation proved to be a catastrophe, resulting in the wing losing a minimum of two personnel. This unfortunate outcome impacted half of TIE pilot Havina Vonreg's family, including her younger brother, Hedrian. Despite surviving the initial attack from Alliance torpedoes, Hedrian succumbed to his injuries after returning to his hangar.
Vonreg attributed responsibility for her sibling's demise equally to the senator and the rebels. Years later, in 4 ABY, she drew parallels between the disastrous raid and an incident in the Nuvar system regarding casualty causes when speaking with Shen, a comrade within her starfighter unit, Titan Squadron. Subsequently, Vonreg brought up the mission in a conversation with another member of her squadron.
The 2020 Star Wars: Squadrons video game, created by Motive Studios, was the first time this raid was mentioned.