Some US Army Special Forces units adopted the green beret in the mid 1950’s. At the time they were all private purchased and could only be worn in certain areas or on exercises. It was not until 1961, when the headgear was officially authorized along with the different Special Forces Group flashes. In the early years, the berets were manufactured in several different countries to include Germany, France, and Canada. Each manufacturer had a different base material, shade of green and shape until US Army regulations standardized the headgear shortly after their approval.
Once an individual graduated Special Forces Training Group he was issued a beret. In order to shape the headgear the graduate would shower with the wool cap on, folding the piece over to his liking and wear the garment until it dried. During the Vietnam War, some Special Forces personnel had their beret liners embroidered or replaced with elaborate designs by Asian tailors.