Green beret
U.S. Special Forces wear the green beret as a distinction of excellence and uniqueness within the Army.
United States Army Special Forces in popular culture
As the public wearied of the Green Berets, so did the American Regular Army. The 1969 "Green Beret Murder Case" in which Colonel Robert B. Rheault and several of his men were tried for assassinating a Communist spy was used as a discrediting tactic against the Special Forces. The case also contributed to the plot of the movie "Apocalypse Now" in which a Green Beret Colonel accused of the same offence has gone rogue.