They started the "Black Beret" tradition from a design made by Marine Sub-Lieutenant (naval rank equivalent to army Sub-Lieutenant) Abelardo "Tigre" (Tiger) Terré at the beginning of 1977, with then Marine Commander Manuel Tomé as its CO. After a gruelling Mountain and Cold Weather commando fighting course, they were dubbed the "Aguilas Australes" (Southern Eagles) and wore a black beret with a silver flash.