The green beret was originally designated in 1953 by Special Forces Maj. Herbert Brucker, a veteran of the OSS. Later that year, 1st Lieutenant Roger Pezelle adopted it as the unofficial headgear for his A-team, Operational Detachment FA-32. They wore it whenever they went to the field for prolonged exercises. Soon it spread throughout all of Special Forces, although the Army refused to authorize its official use.

