This very circumstance serves to explain why Caesar made no attempt to re-establish the Roman burgess-cavalry. The levy was better arranged, the time of service was regulated and abridged; otherwise matters remained on the footing that the infantry of the line were raised chiefly from the lower orders of the Roman burgesses, the cavalry and the light infantry from the subjects. That nothing was done for the reorganization of the fleet, is surprising.
Foreign Mercenaries Adjutants Of The Legion
It was an innovation--hazardous beyond doubt even in the view of its author--to which the untrustworthy character of the cavalry furnished by the subjects compelled him,(34) that Caesar for the first time deviated from the old Roman system of never fighting with mercenaries, and incorporated in the cavalry hired foreigners, especially Germans. Another innovation was the appointment of adjutants of the legion (-legati legionis-). Hitherto the military tribunes, nominated partly by the burgesses, partly by the governor concerned, had led the legions in such a way that six of them were placed over each legion, and the command alternated among these; a single commandant of the legion was appointed by the general only as a temporary and extraordinary measure. In subsequent times on the other hand those colonels or adjutants of legions appear as a permanent and organic institution, and as nominated no longer by the governor whom they obey, but by the supreme command in Rome; both changes seem referable to Caesar's arrangements connected with the Gabinian law.(35) The reason for the introduction of this important intervening step in the military hierarchy must be sought partly in the necessity for a more energetic centralization of the command, partly in the felt want of capable superior officers, partly and chiefly in the design of providing a counterpoise to the governor by associating with him one or more colonels nominated by the Imperator.
The New Commandership-In-Chief
The most essential change in the military system consisted in the institution of a permanent military head in the person of the Imperator, who, superseding the previous unmilitary and in every respect incapable governing corporation, united in his hands the whole control of the army, and thus converted it from a direction which for the most part was merely nominal into a real and energetic supreme command. We are not properly informed as to the position which this supreme command occupied towards the special commands hitherto omnipotent in their respective spheres. Probably the analogy of the relation subsisting between the praetor and the consul or the consul and the dictator served generally as a basis, so that, while the governor in his own right retained the supreme military authority in his province, the Imperator was entitled at any moment to take it away from him and assume it for himself or his delegates, and, while the authority of the governor was confined to the province, that of the Imperator, like the regal and the earlier consular authority, extended over the whole empire. Moreover it is extremely probable that now the nomination of the officers, both the military tribunes and the centurions, so far as it had hitherto belonged to the governor,(36) as well as the nomination of the new adjutants of the legion, passed directly into the hands of the Imperator; and in like manner even now the arrangement of the levies, the bestowal of leave of absence, and the more important criminal cases, may have been submitted to the judgment of the commander-in-chief. With this limitation of the powers of the governors and with the regulated control of the Imperator, there was no great room to apprehend in future either that the armies might be utterly disorganized or that they might be converted into retainers personally devoted to their respective officers.
Caesar's Military Plans Defence Of The Frontier
But, however decidedly and urgently the circumstances pointed to military monarchy, and however distinctly Caesar took the supreme command exclusively for himself, he was nevertheless not at all inclined to establish his authority by means of, and on, the army. No doubt he deemed a standing army necessary for his state, but only because from its geographical position it required a comprehensive regulation of the frontiers and permanent frontier garrisons. Partly at earlier periods, partly during the recent civil war, he had worked at the tranquillizing of Spain, and had established strong positions for the defence of the frontier in Africa along the great desert, and in the north-west of the empire along the line of the Rhine. He occupied himself with similar plans for the regions on the Euphrates and on the Danube. Above all he designed an expedition against the Parthians, to avenge the day of Carrhae; he had destined three years for this war, and was resolved to settle accounts with these dangerous enemies once for all and not less cautiously than thoroughly. In like manner he had projected the scheme of attacking Burebistas king of the Getae, who was greatly extending his power on both sides of the Danube,(37) and of protecting Italy in the north-east by border-districts similar to those which he had created for it in Gaul. On the other hand there is no evidence at all that Caesar contemplated like Alexander a career of victory extending indefinitely far; it is said indeed that he had intended to march from Parthia to the Caspian and from this to the Black Sea and then along its northern shores to the Danube, to annex to the empire all Scythia and Germany as far as the Northern Ocean--which according to the notions of that time was not so very distant from the Mediterranean--and to return home through Gaul; but no authority at all deserving of credit vouches for the existence of these fabulous projects. In the case of a state which, like the Roman state of Caesar, already included a mass of barbaric elements difficult to be controlled, and had still for centuries to come more than enough to do with their assimilation, such conquests, even granting their military practicability, would have been nothing but blunders far more brilliant and far worse than the Indian expedition of Alexander.