The Provinces of the Roman Empire, from Caesar to Diocletian. v. 1

by Theodor Mommsen

Certainly this goal was merely a provisional one. But before Augustus took in hand the definitive regulation of the northern frontier he applied himself to reorganise the provinces already belonging to the empire; more than ten years elapsed over the arrangement of things in Spain, Gaul, Asia, and Syria. How, when what was needful in these quarters was done, he set to work on his comprehensive task, we have now to tell.

Subjugation of the Alps.Italy, which bore sway over three continents, was still, we have said, by no means absolutely master in her own house. The Alps, which sheltered her on the north, were in all their extent, from one end to the other, filled with small and but little civilised tribes of Illyrian, Raetian, or Celtic nationality, whose territories in part bordered closely on those of the great towns of the Transpadana—that of the Trumpilini (Val Trompia) on the town of Brixia; that of the Camunni (Val Camonica above the Lago d’Iseo) on the town of Bergomum; that of the Salassi (Val d’Aosta) on Eporedia (Ivrea)—and whose neighbourhood was by no means wont to be peaceful. Often enough conquered and proclaimed at the Capitol as vanquished, these tribes, in spite of the laurels of the men of note that triumphed over them, were constantly plundering the farmers and the merchants of Upper Italy. The mischief was not to be checked in earnest until the government resolved to cross the Alpine chain and bring its northern slope also under their power; for beyond doubt numbers of these depredators were constantly streaming over the mountains to pillage the rich adjoining country. In the direction of Gaul also similar work had to be done; the tribes in the upper valley of the Rhone (Valais and Vaud) had indeed been subdued by Caesar, but are also named among those that gave trouble to the generals of his son. On the other side, the peaceful border–districts of Gaul complained of the constant incursions of the Raeti. The numerous expeditions arranged by Augustus on account of these evils do not admit, or require, historical recital; they are not recorded in the triumphal Fasti and do not fall under that head, but they gave to Italy for the first time settled life in the north. We may mention the subjugation of the already named Camunni in 73816. by the governor of Illyria, and that of certain Ligurian tribes in the region of Nice in 74014., because they show how, even about the middle of the Augustan age, these insubordinate tribes pressed directly upon Italy. If the emperor subsequently, in the collective report on his imperial administration, declared that violence had not been wrongfully employed by him against any of these small tribes, this must be understood to the effect that cessions of territory and change of abode were demanded of them, and they resisted the demand; only the petty cantonal union formed under king Cottius of Segusio (Susa) submitted without a struggle to the new arrangement.

Subjugation of the Raeti. The southern slopes and the valleys of the Alps formed the arena of these conflicts. The establishment of the Romans on the north slope of the mountains and in the adjoining country to the northward followed in 73915.. The two step–sons of Augustus reckoned as belonging to the imperial house, Tiberius the subsequent emperor, and his brother Drusus, were thereby introduced into the career of generalship for which they were destined; very secure and very grateful were the laurels put before them in prospect. Drusus penetrated from Italy up the valley of the Adige into the Raetian mountains, and achieved here a first victory; for the farther advance his brother, then governor of Gaul, lent him a helping hand from Helvetia; on the lake of Constance itself the Roman triremes defeated the boats of the Vindelici; on the emperor’s day, the 1st August 739 15., in the vicinity of the sources of the Danube, fought the last battle, whereby Raetia and the land of the Vindelici—that is, the Tyrol, East Switzerland, and Bavaria—became thenceforth constituent parts of the Roman empire. The emperor Augustus had gone in person to Gaul to superintend the war and the organisation of the new province. At the point where the Alps abut on the Gulf of Genoa, on the height above Monaco, a monument commanding a wide prospect of the Tyrrhene Sea, and not even yet wholly effaced, was erected some years later by grateful Italy to the emperor Augustus, because under his government all the Alpine tribes from the Upper to the Lower Sea—the inscription enumerates forty–six of them—had been brought under the power of the Roman people. It was no more than the simple truth; and this war was what war ought to be—the guardian and the guarantee of peace.

Organisation of Raetia.A task more difficult doubtless than that of the war proper was the organisation of the new territory; the more especially as considerations of internal policy exerted to some extent a very disturbing influence on it. Since, as things stood, the preponderance of military power might not be located in Italy, the government had to take care that the great military commands were removed as far as possible from its immediate vicinity; indeed one of the motives that conduced to the occupation of Raetia itself was the desire to remove the command, which probably up to this time could not have been dispensed with in Upper Italy itself, definitively away from that region, as was thereupon actually done. It might most naturally have been expected that there would be created on the north slope of the Alps a great centre for the military posts indispensable in the newly acquired territory; but a course the very opposite of this was followed. Between Italy on the one hand, and the great commands on the Rhine and Danube on the other, there was drawn a girdle of small governorships, which were not merely all filled up by the emperor, but were also filled up throughout with men not belonging to the senate. Italy and the province of southern Gaul were separated by the three small military districts of the Maritime Alps (department of the Maritime Alps and the province of Cuneo), the Cottian Alps with Segusio (Susa) as its chief town, and probably the Graian Alps (East Savoy). Among these the second, administered by the already named cantonal prince, Cottius, and his descendants for a time under the form of clientship,[4] was of most importance, but they all possessed a certain military power, and were primarily destined to maintain public safety in the territory concerned, and above all on the important imperial highways traversing it. The upper valley of the Rhone again—that is, the Valais, and the newly conquered Raetia—were placed under a commander of higher standing not in rank, but doubtless in power; a corps, relatively speaking, considerable was here for the time being indispensably requisite. In order, however, to provide for its being diminished as far as possible, Raetia was in great measure depopulated by the removal of its inhabitants. The circuit was closed by the similarly organised province of Noricum, embracing the largest part of what is now German Austria. This wide and fertile region had submitted without substantial resistance to the Roman rule, probably in the form of a dependent principality established in the first instance, but with its prince erelong giving place to the imperial procurator, from whom, for that matter, he did not essentially differ. Some, at all events, of the Rhenish and Danubian legions had their fixed quarters in the immediate neighbourhood, on the one hand of the Raetian frontier at Vindonissa, on the other of the Norican frontier at Poetovio, obviously to keep in check the adjoining province; but in that intermediate region as little were there armies of the first rank with legions under senatorial generals, as there were senatorial governors. The distrust towards the corporation governing the state alongside of the emperor finds very forcible expression in this arrangement.

Roads and colonies in the Alps.Next to the protection of the peace of Italy the chief aim of this organisation was to secure its communications with the north, which were of not less urgent importance for traffic than in a military point of view. With special energy Augustus took up this task; and he doubtless deserved that his name should still live at the present day in those of Aosta and Augsburg, perhaps also in that of the Julian Alps. The old coast–road, which Augustus partly renewed, partly constructed, from the Ligurian coast through Gaul and Spain to the Atlantic Ocean, can only have served purposes of traffic. The road also over the Cottian Alps, already opened up by Pompeius (iv. 28)iv. 27., was finished under Augustus by the already mentioned prince of Susa, and named after him; in like manner a trading route, it connects Italy, by way of Turin and Susa, with the commercial capital of south Gaul, Arelate. But the military line proper—the direct connection between Italy and the camps on the Rhine—led through the valley of the Dora Baltea from Italy partly to Lyons the capital of Gaul, partly to the Rhine. While the republic had confined itself to bringing into its power the entrance of that valley by founding Eporedia (Ivrea), Augustus possessed himself of it entirely by not merely subjugating its inhabitants—the still restless Salassi, with whom he had already fought during the Dalmatian war—but extirpating them outright; 36,000 of them, including 8000 fighting men, were sold under the hammer into slavery in the market–place of Eporedia, and the purchasers were bound not to grant freedom to any of them within twenty years. The camp itself, from which his general Varro Murena had achieved their final defeat in 72925., became the fortress, which, occupied by 3000 settlers taken from the imperial guard, was to secure the communications—the town Augusta Praetoria, the modern Aosta, whose walls and gates then erected are still standing. It commanded subsequently two Alpine routes, as well that which led over the Graian Alps or Little St. Bernard, along the upper Isère and the Rhone to Lyons, as that which ran over the Poenine Alps, the Great St. Bernard, to the valley of the Rhone and to the Lake of Geneva, and thence into the valleys of the Aar and the Rhine. But it was for the first of these roads that the town was designed, as it originally had only gates leading east and west; nor could this be otherwise, for the fortress was built ten years before the occupation of Raetia; in those years, moreover, the later organisation of the camps on the Rhine was not yet in existence, and the direct connection between the capitals of Italy and Gaul was altogether of the foremost importance. In the direction of the Danube we have already mentioned the laying out of Emona on the upper Save, on the old trade–road from Aquileia over the Julian Alps into the Pannonian territory. This road was at the same time the chief artery for the military communication of Italy with the region of the Danube. Lastly, with the conquest of Raetia was connected the opening of the route which led from the last Italian town Tridentum (Trent), up the Adige valley, to the newly established Augusta in the land of the Vindelici, the modern Augsburg, and onward to the upper Danube. Subsequently, when the son of the general who had first opened up this region came to reign, this road received the name of the Claudian highway.[5] It furnished the means of connection, indispensable from a military point of view, between Raetia and Italy; but in consequence of the comparatively small importance of the Raetian army, and doubtless also in consequence of the more difficult communication, it never had the same importance as the route of Aosta.

The Alpine passes and the north slope of the Alps were thus in secure possession of the Romans. Beyond the Alps there stretched to the east of the Rhine the land of the Germans; to the south of the Danube that of the Pannonians and the Moesians. Here, too, soon after the occupation of Raetia, the offensive was taken, and nearly contemporaneously in both directions. Let us look first at what occurred on the Danube.

Erection of Illyricum. The Danubian region, to all appearance up to 72727. administered along with Upper Italy, became then, on the reorganisation of the empire, an independent administrative district, Illyricum, under a governor of its own. It consisted of Dalmatia, with the country behind it, as far as the Drin—while the coast farther to the south had for long belonged to the province of Macedonia—and of the Roman possessions in the land of the Pannonians on the Save. The region between the Haemus and the Danube as far as the Black Sea, which Crassus had shortly before brought into dependence on the empire, as well as Noricum and Raetia, stood in a relation of clientship to Rome, and so did not belong as such to this province, but withal were primarily dependent on the governor of Illyricum. Thrace, north of the Haemus, still by no means pacified, fell, from a military point of view, to the same district. It was a continued effect of the original organisation, and one which subsisted down to a late period, that the whole region of the Danube from Raetia to Moesia was comprehended as a customs–district under the name Illyricum in the wider sense. Legions were stationed only in Illyricum proper, in the other districts there were probably no imperial troops at all, or at the utmost small detachments; the chief command was held by the proconsul of the new province coming from the senate; while the soldiers and officers were, as a matter of course, imperial. It attests the serious character of the offensive beginning after the conquest of Raetia, that in the first instance the co–ruler Agrippa took over the command in the region of the Danube, to whom the proconsul of Illyricum had to become de iure subordinate; and then, when Agrippa’s sudden death in the spring of 74212. broke down this combination, Illyricum in the following year passed into imperial administration, and the imperial generals obtained the chief commands in it. Soon three military centres were here formed, which thereupon brought about the administrative division of the Danubian region into three parts. The small principalities in the territory conquered by Crassus gave place to the province of Moesia, the governor of which henceforth, in what is now Servia and Bulgaria, guarded the frontier against the Dacians and Bastarnae. In what had hitherto been the province of Illyricum, a part of the legionaries was posted on the Kerka and the Cettina, to keep in check the still troublesome Dalmatians. The chief force was stationed in Pannonia, on what was then the boundary of the empire, the Save. This distribution of the legions and organisation of the provinces cannot be fixed with chronological precision; probably the serious wars which were waged simultaneously against the Pannonians and the Thracians, of which we have immediately to speak, led in the first instance to the institution of the governorship of Moesia, and it was not till some time later that the Dalmatian legions and those on the Save obtained commanders–in–chief of their own.

First Pannonian war of Tiberius.As the expeditions against the Pannonians and the Germans were, as it were, a repetition of the Raetian campaign on a more extended scale, so the leaders, who were put at their head with the title of imperial legates, were the same—once more the two princes of the imperial house, Tiberius, who, in the place of Agrippa, took up the command in Illyricum, and Drusus, who went to the Rhine, both now no longer inexperienced youths, but men in the prime of their years, and well fitted to take in hand severe work.

Immediate pretexts for the waging of war in the region of the Danube were not wanting. Marauders from Pannonia, and even from the peaceful Noricum, carried pillage in the year 73816. as far as Istria. Two years thereafter the Illyrian provincials took up arms against their masters, and, although they returned to obedience without offering opposition when Agrippa took over the command in the autumn of 74113., yet immediately after his death the disturbances are alleged to have begun afresh. We cannot say how far these Roman accounts correspond to the truth; certainly the pushing forward of the Roman frontier, required by the general political situation, formed the real motive and aim of the war. As to the three campaigns of Tiberius in Pannonia from 742 to 74412 to 10. we are very imperfectly informed. Their result was stated by the government as the establishment of the Danube as the boundary for the province of Illyricum. That this river was thenceforth looked upon in its whole course as the boundary of Roman territory, is doubtless correct; but a subjugation in the proper sense, or even an occupation, of the whole of this wide domain by no means took place at that time. The chief resistance to Tiberius was offered by the tribes already at an earlier date declared Roman, especially by the Dalmatians; among those first effectively subdued at that time, the most noted was that of the Pannonian Breuci on the lower Save. The Roman armies, during these campaigns, probably did not cross the Drave, and did not in any case transfer their standing camp to the Danube. The region between the Save and Drave was at all events occupied, and the headquarters of the Illyrian northern army were transferred from Siscia on the Save to Poetovio (Pettau) on the middle Drave, while in the Norican region recently occupied the Roman garrisons reached as far as the Danube at Carnuntum (Petronell, near Vienna), at that time the last Norican town towards the east. The wide and vast region between the Drave and the Danube, which now forms western Hungary, was to all appearance at that time not even militarily occupied. This was in keeping with the whole plan of the offensive operations that were begun; the object sought was to be in touch with the Gallic army, and for the new imperial frontier in the north–east the natural base was not Buda, but Vienna.

Thracian war of Piso.Complementary in some measure to this Pannonian expedition of Tiberius was that which was simultaneously undertaken against the Thracians by Lucius Piso, perhaps the first governor that Moesia had of its own. The two great neighbouring nations, the Illyrians and the Thracians, of whom we shall treat more fully in a subsequent chapter, stood alike at that time in need of subjugation. The tribes of inland Thrace showed themselves still more obstinate than the Illyrians, and far from subordinate to the kings set over them by Rome; in 73816. a Roman army had to advance thither and come to the help of the princes against the Bessi. If we had more exact accounts of the conflicts waged in the one quarter as in the other in the years 741 to 74313 to 11., the contemporary action of the Thracians and Illyrians would perhaps appear as concerted. Certain it is that the mass of the Thracian tribes south of the Haemus and presumably also those settled in Moesia took part in this national war, and that the resistance of the Thracians was not less obstinate than that of the Illyrians. It was for them at the same time a religious war; the shrine of Dionysos,[6] taken from the Bessi and assigned to the Odrysian princes well disposed to Rome, was not forgotten; a priest of this Dionysos stood at the head of the insurrection, and it was directed in the first instance against those Odrysian princes. One of them was taken and put to death, the other was driven away; the insurgents, in part armed and disciplined after the Roman model, were victors in the first engagement over Piso, and penetrated as far as Macedonia and into the Thracian Chersonese; fears were entertained for Asia. Ultimately, however, Roman discipline gained the superiority over these brave opponents; in several campaigns Piso mastered the resistance, and the command of Moesia, instituted either already on this occasion or soon afterwards on “the Thracian shore,” broke up the connection of the Daco–Thracian peoples, by separating the tribes on the left bank of the Danube and their kinsmen south of the Haemus from each other, and permanently secured the Roman rule in the region of the lower Danube.