The Screaming Wookiee Squadron functioned as a starfighter unit within the New Republic.
Initially, the unit's operational life began as a training squadron under the command of then-Major Atton Repness. In this role, it acted as a "last resort" training group for pilot trainees who were close to failing out of Starfighter Command. This Y-wing squadron, known as the Screaming Wookiees, operated from the training frigate Tedevium, which was part of Solo Fleet.
Circumstances forced the Screaming Wookiee Squadron into active duty early under the command of General Edor Crespin during the hunt for Warlord Zsinj. This occurred after the rogue Imperial managed to steal the Super Star Destroyer Razor's Kiss from the shipyards of the Imperial-occupied Kuat Drive Yards.
With Crespin leading in his RZ-1 A-wing interceptor, the Screaming Wookiees took over for Wraith Squadron in escorting Nova Squadron's B-wing starfighters during the assault on the stolen vessel and Zsinj's flagship, the Iron Fist. The squadron performed well enough during this engagement to be officially designated as a front-line squadron.