After seeing the Arc Troopers in action on the Clone Wars micro series, George Lucas decided to add their trademark 'skirt' or 'kama' to several clone commanders in Revenge of the Sith. This meant Rob Coleman and his team had to render several finished effect shots all over again.
According to the article "Guide to the Grand Army of the Republic" written by Karen Traviss and Ryan Kaufman and published in Star Wars Insider magazine # 84, the squad of ARC Troopers led by Captain Fordo who destroyed the Harnaidan defensive cannon on Muunilinst were thereafter known as "The Muunilinst 10". However, the actual number of their squad varied greatly throughout the animation.