A military cap is a type of headgear worn by members of the armed forces. The most common types of military caps are the BERET, KEPI, and SHAKO. The BERET is a soft, round, flat-crowned hat, usually made of wool, with a wide, stiff brim. The KEPI is a lightweight, peaked cap with a flat top and a visor. The SHAKO is a tall, cylindrical military cap with a visor and a plume or pompom on top. All three types of military caps are designed to provide protection from the elements and to identify the wearer's rank and branch of service.