Clone trooper film series and in the "Star Wars" expanded universe media, a number of specialized trooper units are seen, including elite special forces units such as the 'Advanced Reconnaissance Commandos' (ARC troopers), and Null ARCs, who usually work alone. All clone commandos and ARCs were trained by Mandalorian mercenaries; the elite Clone Troopers are known as Shadow Troopers. The style and color of a clone troopers armor often varies depending on their rank, specialization, unit, or environment, for example, the clone troopers on Kashyyyk wear camouflage green scout-style armour whereas the 501st legion wears standard white armor with blue accents. Another
Star Wars: Empire published on 21 May 2003 by Dark Horse Comics. The story is set in the "Star Wars" galaxy shortly before, and during the Battle of Yavin in "". Star Wars Empire: The Short, Happy Life of Roons Sewell is a two-part story arc in the Star Wars: Empire series of comic books written by Paul Chadwick. The first issue was published on 23 July 2003 by Dark Horse Comics. The story is set in the "Star Wars" galaxy one year before the Battle of Yavin in "" Star Wars Empire 13: What Sin Loyalty? is the 13th issue of the