10 U.S.C. § 3249

Each advocate for competition designated pursuant to section 1705(a) of title 41 for an agency named in section 3063 of this title shall be a general or flag officer if a member of the armed forces or in a position classified above GS–15 pursuant to section 5108 of title 5, if a civilian employee and shall be designated to serve for a minimum of two years.