The term 'SPECIAL FORCES CAPS' refers to the distinctive headgear worn by members of special forces units. The crossword solution for this term is 'BERETS, ' which are a type of soft, round, flat-crowned hat that is typically made of wool or cotton and is often associated with military personnel. Berets are commonly worn by members of special forces units, such as the U.S. Army Special Forces, the British Special Air Service, and the French Foreign Legion.