Delta Squad

Delta Squad was an elite clone commando squad that carried out missions for the Grand Army of the Republic during the Clone Wars.

History
"There were no survivors on Devaron. Everyone was killed, including Master Halsey and his Padawan."

- Boss, reporting on the events on Devaron

During the Clone Wars the commandos of Delta Squad were dispatched to Devaron in the aftermath of battle waged there and recovered the bodies of Jedi Halsey and his Padawan, Knox, and returned them to Coruscant. Upon landing at the Jedi Temple, the squad was met by Jedi Council Masters Obi-Wan Kenobi, Plo Koon, Adi Gallia and Saesee Tiin, who concluded that the deaths of the Roonan Jedi and his apprentice were a sign of a new threat to the Republic. Their suspicion was confirmed when security footage of the massacre was recovered which including a hologram of Halsey's death at the hands of an as-yet unknown assassin.

Behind the scenes
Delta Squad first appeared in the 2005 Star Wars Legends video game, Star Wars: Republic Commando. During development of Witches of the Mist, a season three episode of Star Wars: The Clone Wars, supervising director Dave Filoni requested that the creative team incorporate Delta Squad into the plot. Concept art showcased in the episode's accompanying featurette brings the names (but not the identification numbers) of two of the squad members, Boss and Sev, into official canon.