The designation Hail Leader served as the callsign for the commanding officer of Hail Squadron throughout the duration of the Galactic Civil War. Around the time of the battle within the Haldeen sector in 4 ABY, Hail Squadron was under the leadership of a certain commander. Subsequently, in 5 ABY, a certain pilot was given this very callsign amidst a battle against the 204th Imperial Fighter Wing above the planet Chadawa.
The initial reference to Hail Leader occurred within Victory's Price, a novel from 2021 penned by Alexander Freed.