A Corps (pronounce /ˈkɔər/ "core"; plural /ˈkɔərz/ spelled the same as singular; from French, from the Latin corpus "body") is either a large formation, or an administrative grouping of troops within an armed force with a common function such as Artillery or Signals representing an Arm of Service. Corps are mostly made up of three divsion and artillery, or made up of 25,000 men in the CSA. Branch of Service such as the United States Marine Corps, the Corps of Royal Marines, the Honourable Corps of Gentlemen at Arms, or the Corps of Commissionaires.