But, on the whole, the earliest period of the history of the Republic is the epoch of the power of the magistracy. The traditions of the monarchy were so little forgotten that eight years after the establishment of the Republic, kingship in a modified form was again restored.[338] In 501 B.C., during a war with the Latins, the consuls nominated an individual with the royal title and powers. It was understood that this _magister populi_, or, as he was afterwards called, _dictator_,[339] was to remain in power only so long as the danger lasted; as the danger was originally military, a single campaign of six months was held to be the maximum duration of the office. During this time he was to exercise the full regal _imperium_, within as well as without the city, and the accompanying military jurisdiction without appeal. He was originally understood to be a purely military official and the commander of the infantry force; the command of the cavalry he entrusted to a magistrate who, on the analogy of the magistracies of the monarchy, was a delegate of his own, and bore the title “master of the horse” (_magister equitum_).[340] The dictatorship was conceived of as a purely military office, and, though it was occasionally used for other purposes in the later constitution, never lost its primitive character. Although it impeded for a time some of the most characteristic functions of the consuls, it was not a suspension, but a part of, the constitution. A small, struggling, and essentially military society, such as that of early Rome, contemplated martial law as an occasional necessity; there were times when the peril of the state was so great that it was felt that the citizens’ ordinary guarantees of protection should sink into abeyance if they were thought likely to interfere with the safety of the commonwealth. The dictatorship had an internal as well as an external side to its military character; it was even, perhaps, on its earliest institution, meant to control disobedient citizens as well as to oppose the enemy,[341] and was thus to some extent a party weapon in the hands of the Patricians against the refractory Plebs. We shall find that this summary military jurisdiction within the city was subsequently abolished, without much loss to the utility of the institution. Its true merit was the unity of administration which it created, the advantages of which were made more apparent by the clashing powers of the magistrates at a later stage of history. But the experience of the evils of divided authority did not first point out the necessity of the office. The dictatorship was an integral part of the original Republican constitution; the law allowing it was forgotten—perhaps it was the first _lex Valeria_ which secured the appeal against the ordinary magistrates; but the right of the consul to declare martial law, as he did by appointing a dictator, was never questioned as was the parallel right,