Green beret
When visiting the Special Forces at Fort Bragg on 12 October 1961, President John F. Kennedy asked Brigadier General William P. Yarborough to make sure that the men under his command wore green berets for the visit. Later that day, Kennedy sent a memorandum which included the line: "I am sure that the green beret will be a mark of distinction in the trying times ahead". By America's entry into the Vietnam War, the green beret had become a symbol of excellence throughout the US Army. On April 11, 1962 in a White House memorandum to the United States Army, President Kennedy reiterated his view: "The green beret is a symbol of excellence, a badge of courage, a mark of distinction in the fight for freedom". To no avail, both Yarborough and Edson Raff had previously petitioned the Pentagon to allow wearing of the green beret. The President, however, did not fail them.
Uniform beret
Auxiliary police officers of Certis CISCO and Aetos Security Management don dark blue berets when performing escort and other high-risk duties, as do specialist forces of the Singapore Prison Service. In addition, student cadets of uniformed youth organizations such as the National Cadet Corps also wear berets of different colours. National Cadet Corps has three distinct beret colours for each of its services (Land, Sea and Air), these are NCC Green, NCC Black and NCC Blue for each service respectively.National Police Cadet Corps wears their own separate dark blue berets, while National Civil Defence Cadet Corps wears their separate black beret.