Among the Hindu religious sects, only the sadhus (monks) of the Nāga sect can be seen nude. They usually wear a loin-cloth around their waist, but not always; and usually remain in their Akhara or deep forest or isolation and come out in public only once every four years during Kumbh Mela. They have a very long history and are warrior monks, who usually also carry a "talwar" (sword), "trishul" (trident), "bhala" (javelin) or such weapons, and in medieval times have fought many wars to protect Hindu temples and shrines.