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 opening crawl the crawl, in an effort to distinguish it from the main film series. In fact, "Rogue One" retains "A long time ago, in a galaxy far, far, away...", but then immediately cuts to the opening scene with no crawl. At the end of the opening scene, the title "ROGUE ONE" recedes against a star field, like the "STAR WARS" title of the main series, then there is a cut to the next scene. The second spin-off film "" does not feature a crawl, but does feature an introductory text shown sentence by sentence in the same font and color as