Spain   Spanish national police “Los Morrones” visor cap The Policia Nacional in Spain have pretty much the same duties as the state police in the United States. This particular cap was only in use for a few years during the late 1970s and the officers who wore them were nicknamed “Los Morrones”, which means the “mules”, perhaps because of the brown color of the cap. Their predecessors, the Policia Armada of the Franco era, were called “Los Grises” or the “pigs” because of the pinkish cap color. The bullion chinstrap and thin gold visor decoration indicate that this is an officer’s cap.