Charley, VC, Vietcong, ancestor, announcer, antecedent, avant-garde, bellwether, buccinator, bushfighter, casual, explorer, forebear, foregoer, forerunner, front runner, frontiersman, fugleman, groundbreaker, guerrilla, guide, harbinger, herald, innovator, irregular, lead runner, leader, maquis, maquisard, messenger, partisan, pathfinder, pioneer, point, precedent, precursor, predecessor, resistance, resistance fighter, scout, stormy petrel, trailblazer, trailbreaker, underground, underground fighter, vanguard, vaunt-courier, voortrekker