and the Sabines; but, when victory was assured, the legions were not disbanded, and a pretext was found for another campaign. On the march from Rome the plebeian contingents suddenly turned aside to a hill in the territory of Crustumerium, which, from the oath taken on its summit, was thenceforth called the “Mount of Curses” (_sacer mons_).[357] A plan, carefully thought out in the coteries and gatherings that had preceded the campaign,[358] was now carried into effect. The Plebs had already gathered in informal meetings (_concilia_) to discuss their grievances. All that they lacked to become a corporation which might rival that of the Populus, was to have at their head magistrates with great and recognised powers. They were now met in battle array to carry out this resolve; and it was not unnatural that the two plebeian magistrates whom they chose to rival the power of the consuls should bear the military appellation of tribunes.[359] It was made a condition of reconciliation with the patrician state which they had quitted, that these officers should have the power of suspending the decree of the consuls when levelled against a member of the Plebs. But, since little confidence was to be reposed in the government, the Plebs bound themselves by an oath, similar to that taken on the expulsion of the king, to destroy any one who offered injury or insult to their magistrates. The recognition of these new magistrates, with the powers their appointment involved, was effected by a _lex centuriata_ perhaps passed in the very year of the secession (494 B.C.). The office of the _tribuni plebis_ or _plebei_ was modelled as closely as possible on that of the consuls. They were originally two in number, and had, with reference to each other, the mutual power of veto which the collegiate principle implied. They were from the first magistrates of the Plebs, hence none but Plebeians were eligible,[360] and they must from the first have been elected by an assembly of the Plebs. This assembly, however, did not perpetuate its original military character, and the unit of voting naturally selected for the city-gatherings at which the tribunes were appointed was the _curia_, to which Plebeians had for some time belonged. This assembly of the Plebs was known as the _concilium plebis curiatim_.[361]