Green beret
U.S. Special Forces wear the green beret as a distinction of excellence and uniqueness within the Army.
Berets of the United States Army
The change in color also required modification of the associated flashes worn by the Ranger units, changing the borders from white to black in order to provide better contrast to the lighter beret.
In the U.S. armed forces, the green beret may be worn only by soldiers awarded the Special Forces Tab, signifying they have qualified as Special Forces soldiers.