In their internal policy, Ferdinand and Isabella consistently pursued the principles adopted from the commencement of their reigns. In no countries in Europe perhaps were privileges so strong, the crown so poor, or the royal prerogative so limited, as they were in Castile in the fifteenth century.[27] A direct attack on these ancient privileges would have been dangerous among so proud a people. The sovereigns left, therefore, the outward forms of the constitution intact, and indirectly pursued their aim by concentrating the machinery of government in the royal hands, and by strengthening the personal authority of the crown. They took advantage of the disinclination of the nobles to attend the Cortes; they omitted to summon them to it, or even to call them to their councils, and deprived the hereditary officers of state of many of their powers. One of the most efficient instruments for keeping the nobility in check was the ‘Hermandad.’ This association, which had been originally organised by the principal cities of Castile to protect themselves at once against the crown and the aristocracy, had, in 1476, been reorganised under royal control. In every city of importance a court was established for the trial of highway robbery and other acts of violence. From these city courts, appeal lay to a supreme court of the whole kingdom. The courts had in their service a force of mounted police, which was maintained by a contribution levied on householders. The regulation of affairs was placed in the hands of provincial assemblies acting under a supreme ‘junta,’ which passed laws relating to justice, and often trenched upon the privileges of the Cortes itself. So effectual was the work of this reorganised ‘Hermandad’ that in 1495 its powers were considerably curtailed. A few subordinate functionaries alone were retained for the execution of justice, and these were placed under the appellate jurisdiction of the ordinary law-courts. During this period also, the resumption of grants of royal lands to the nobility was persistently pursued, while the policy of annexing the mastership of the powerful military orders to the crown, first begun in 1487 with that of Calatrava, was completed. In 1494, the mastership of Alcantara, and in 1499, that of St. Iago of Compostella, were assumed by Ferdinand. It was not until the reign of Charles V. that a Bull of Adrian VI. finally accorded the papal sanction to this measure, but Ferdinand and Isabella reaped the practical fruits of the policy. Not only was the royal prestige thereby materially increased, but the crown gained complete control of wealthy and powerful organisations, which had long been a menace to its authority, as the Hospitallers and Knight Templars had been in other European kingdoms during the Middle Ages.