"The Nayars," Mr. N. Subramani Aiyar writes, "have a distinct feudal organisation, and the division of their territories had an unmistakeable reference to it. The territorial unit was the desam, presided over by a Dasavazhi. A number of desams adjoining one another constituted a nadu, which was under the jurisdiction of a chieftain called the Naduvazhi. Above the Naduvazhis was the Rajah, the highest suzerain in the country. In course of time, each nadu split itself up into a certain number of taras, over the affairs of which a Karanavan, or elder, presided. An assembly of these Karanavans constituted the six hundred--an old socio-military organisation of the Nayars in mediæval times. These six hundred are referred to in two places in the second Syrian Christian document, which bears the date 925 A.D. In a South Travancore inscription, dated 371 M.E., the same organisation is referred to as Venattarunuru, or the six hundred of Venad, and one of their duties evidently related to the supervision of the working of temples and charitable institutions connected therewith. As Venad was divided into eighteen districts in ancient days, there might have been altogether eighteen six hundred in the country. The Naduvazhis possessed considerable authority in all social matters and possessed enough lands to be cultivated by their Kudiyans. A feudal basis was laid for the whole organisation. Large numbers served as soldiers in times of war, and cultivated their lands when the country was quiet. In modern times, none of them take to military service in Travancore, except those employed as sepoys in the Nayar Brigade."