The Decline and Fall of the Roman Empire · Chapter 12 (3/5)

Since the expedition of Maximin, the Roman generals had confined their ambition to a defensive war against the nations of Germany, who perpetually pressed on the frontiers of the empire. The more daring Probus pursued his Gallic victories, passed the Rhine, and displayed his invincible eagles on the banks of the Elbe and the Neckar. He was fully convinced that nothing could reconcile the minds of the barbarians to peace, unless they experienced in their own country the calamities of war. Germany, exhausted by the ill success of the last emigration, was astonished by his presence. Nine of the most considerable princes repaired to his camp, and fell prostrate at his feet. Such a treaty was humbly received by the Germans, as it pleased the conqueror to dictate. He exacted a strict restitution of the effects and captives which they had carried away from the provinces; and obliged their own magistrates to punish the more obstinate robbers who presumed to detain any part of the spoil. A considerable tribute of corn, cattle, and horses, the only wealth of barbarians, was reserved for the use of the garrisons which Probus established on the limits of their territory. He even entertained some thoughts of compelling the Germans to relinquish the exercise of arms, and to trust their differences to the justice, their safety to the power, of Rome. To accomplish these salutary ends, the constant residence of an Imperial governor, supported by a numerous army, was indispensably requisite. Probus therefore judged it more expedient to defer the execution of so great a design; which was indeed rather of specious than solid utility.1180 Had Germany been reduced into the state of a province, the Romans, with immense labor and expense, would have acquired only a more extensive boundary to defend against the fiercer and more active barbarians of Scythia.

Instead of reducing the warlike natives of Germany to the condition of subjects, Probus contented himself with the humble expedient of raising a bulwark against their inroads. The country which now forms the circle of Swabia had been left desert in the age of Augustus by the emigration of its ancient inhabitants.1181 The fertility of the soil soon attracted a new colony from the adjacent provinces of Gaul. Crowds of adventurers, of a roving temper and of desperate fortunes, occupied the doubtful possession, and acknowledged, by the payment of tithes, the majesty of the empire.1182 To protect these new subjects, a line of frontier garrisons was gradually extended from the Rhine to the Danube. About the reign of Hadrian, when that mode of defence began to be practised, these garrisons were connected and covered by a strong entrenchment of trees and palisades. In the place of so rude a bulwark, the emperor Probus constructed a stone wall of a considerable height, and strengthened it by towers at convenient distances. From the neighborhood of Neustadt and Ratisbon on the Danube, it stretched across hills, valleys, rivers, and morasses, as far as Wimpfen on the Neckar, and at length terminated on the banks of the Rhine, after a winding course of near two hundred miles.1183 This important barrier, uniting the two mighty streams that protected the provinces of Europe, seemed to fill up the vacant space through which the barbarians, and particularly the Alemanni, could penetrate with the greatest facility into the heart of the empire. But the experience of the world, from China to Britain, has exposed the vain attempt of fortifying any extensive tract of country.1184 An active enemy, who can select and vary his points of attack, must, in the end, discover some feeble spot or some unguarded moment. The strength as well as the attention of the defenders is divided; and such are the blind effects of terror on the firmest troops, that a line broken in a single place is almost instantly deserted. The fate of the wall which Probus erected may confirm the general observation. Within a few years after his death, it was overthrown by the Alemanni. Its scattered ruins, universally ascribed to the power of the Demon, now serve only to excite the wonder of the Swabian peasant.

Among the useful conditions of peace imposed by Probus on the vanquished nations of Germany, was the obligation of supplying the Roman army with sixteen thousand recruits, the bravest and most robust of their youth. The emperor dispersed them through all the provinces, and distributed this dangerous reinforcement in small bands, of fifty or sixty each, among the national troops; judiciously observing that the aid which the republic derived from the barbarians should be felt but not seen.1185 Their aid was now become necessary. The feeble elegance of Italy and the internal provinces could no longer support the weight of arms. The hardy frontiers of the Rhine and Danube still produced minds and bodies equal to the labors of the camp; but a perpetual series of wars had gradually diminished their numbers. The infrequency of marriage, and the ruin of agriculture, affected the principles of population, and not only destroyed the strength of the present, but intercepted the hope of future, generations. The wisdom of Probus embraced a great and beneficial plan of replenishing the exhausted frontiers, by new colonies of captive or fugitive barbarians, on whom he bestowed lands, cattle, instruments of husbandry, and every encouragement that might engage them to educate a race of soldiers for the service of the republic. Into Britain, and most probably into Cambridgeshire,1186 he transported a considerable body of Vandals. The impossibility of an escape reconciled them to their situation, and in the subsequent troubles of that island they approved themselves the most faithful servants of the state.1187 Great numbers of Franks and Gepidae were settled on the banks of the Danube and the Rhine. A hundred thousand Bastarnae, expelled from their own country, cheerfully accepted an establishment in Thrace, and soon imbibed the manners and sentiments of Roman subjects.1188 But the expectations of Probus were too often disappointed. The impatience and idleness of the barbarians could ill brook the slow labors of agriculture. Their unconquerable love of freedom, rising against despotism, provoked them into hasty rebellions, alike fatal to themselves and to the provinces;1189 nor could these artificial supplies, however repeated by succeeding emperors, restore the important limit of Gaul and Illyricum to its ancient and native vigor.

Of all the barbarians who abandoned their new settlements, and disturbed the public tranquillity, a very small number returned to their own country. For a short season they might wander in arms through the empire; but in the end they were surely destroyed by the power of a warlike emperor. The successful rashness of a party of Franks was attended, however, with such memorable consequences, that it ought not to be passed unnoticed. They had been established by Probus on the seacoast of Pontus, with a view of strengthening the frontier against the inroads of the Alani. A fleet stationed in one of the harbors of the Euxine fell into the hands of the Franks; and they resolved, through unknown seas, to explore their way from the mouth of the Phasis to that of the Rhine. They easily escaped through the Bosphorus and the Hellespont, and, cruising along the Mediterranean, indulged their appetite for revenge and plunder by frequent descents on the unsuspecting shores of Asia, Greece, and Africa. The opulent city of Syracuse, in whose port the navies of Athens and Carthage had formerly been sunk, was sacked by a handful of barbarians, who massacred the greatest part of the trembling inhabitants. From the island of Sicily the Franks proceeded to the columns of Hercules, trusted themselves to the ocean, coasted round Spain and Gaul, and steering their triumphant course through the British channel, at length finished their surprising voyage by landing in safety on the Batavian or Frisian shores.1190 The example of their success, instructing their countrymen to conceive the advantages and to despise the dangers of the sea, pointed out to their enterprising spirit a new road to wealth and glory.

Notwithstanding the vigilance and activity of Probus, it was almost impossible that he could at once contain in obedience every part of his wide-extended dominions. The barbarians, who broke their chains, had seized the favorable opportunity of a domestic war. When the emperor marched to the relief of Gaul, he devolved the command of the East on Saturninus. That general, a man of merit and experience, was driven into rebellion by the absence of his sovereign, the levity of the Alexandrian people, the pressing instances of his friends, and his own fears; but from the moment of his elevation, he never entertained a hope of empire, or even of life.

“Alas!” he said, “the republic has lost a useful servant, and the rashness of an hour has destroyed the services of many years. You know not,” continued he, “the misery of sovereign power: a sword is perpetually suspended over our head. We dread our very guards, we distrust our companions. The choice of action or of repose is no longer in our disposition, nor is there any age, or character, or conduct, that can protect us from the censure of envy. In thus exalting me to the throne, you have doomed me to a life of cares, and to an untimely fate. The only consolation which remains is the assurance that I shall not fall alone.”1191

But as the former part of his prediction was verified by the victory, so the latter was disappointed by the clemency, of Probus. That amiable prince attempted even to save the unhappy Saturninus from the fury of the soldiers. AD 279 He had more than once solicited the usurper himself to place some confidence in the mercy of a sovereign who so highly esteemed his character, that he had punished, as a malicious informer, the first who related the improbable news of his disaffection.1192 Saturninus might, perhaps, have embraced the generous offer, had he not been restrained by the obstinate distrust of his adherents. Their guilt was deeper, and their hopes more sanguine, than those of their experienced leader.

AD 280 The revolt of Saturninus was scarcely extinguished in the East, before new troubles were excited in the West by the rebellion of Bonosus and Proculus in Gaul. The most distinguished merit of those two officers was their respective prowess, of the one in the combats of Bacchus, of the other in those of Venus;1193 yet neither of them was destitute of courage and capacity, and both sustained, with honor, the august character which the fear of punishment had engaged them to assume, till they sunk at length beneath the superior genius of Probus. He used the victory with his accustomed moderation, and spared the fortune as well as the lives of their innocent families.1194

AD 281 The arms of Probus had now suppressed all the foreign and domestic enemies of the state. His mild but steady administration confirmed the reestablishment of the public tranquillity; nor was there left in the provinces a hostile barbarian, a tyrant, or even a robber, to revive the memory of past disorders. It was time that the emperor should revisit Rome, and celebrate his own glory and the general happiness. The triumph due to the valor of Probus was conducted with a magnificence suitable to his fortune, and the people who had so lately admired the trophies of Aurelian gazed with equal pleasure on those of his heroic successor.1195 We cannot, on this occasion, forget the desperate courage of about fourscore gladiators, reserved, with near six hundred others, for the inhuman sports of the amphitheatre. Disdaining to shed their blood for the amusement of the populace, they killed their keepers, broke from the place of their confinement, and filled the streets of Rome with blood and confusion. After an obstinate resistance, they were overpowered and cut in pieces by the regular forces; but they obtained at least an honorable death, and the satisfaction of a just revenge.1196

The military discipline which reigned in the camps of Probus was less cruel than that of Aurelian, but it was equally rigid and exact. The latter had punished the irregularities of the soldiers with unrelenting severity, the former prevented them by employing the legions in constant and useful labors. When Probus commanded in Egypt, he executed many considerable works for the splendor and benefit of that rich country. The navigation of the Nile, so important to Rome itself, was improved; and temples, buildings, porticos, and palaces were constructed by the hands of the soldiers, who acted by turns as architects, as engineers, and as husbandmen.1197 It was reported of Hannibal that in order to preserve his troops from the dangerous temptations of idleness, he had obliged them to form large plantations of olive trees along the coast of Africa.1198 From a similar principle, Probus exercised his legions in covering with rich vineyards the hills of Gaul and Pannonia, and two considerable spots are described which were entirely dug and planted by military labor.1199 One of these, known under the name of Mount Alma, was situated near Sirmium, the country where Probus was born, for which he ever retained a partial affection, and whose gratitude he endeavored to secure by converting into tillage a large and unhealthy tract of marshy ground. An army thus employed constituted perhaps the most useful, as well as the bravest, portion of Roman subjects.

But, in the prosecution of a favorite scheme, the best of men, satisfied with the rectitude of their intentions, are subject to forget the bounds of moderation; nor did Probus himself sufficiently consult the patience and disposition of his fierce legionaries.1200 The dangers of the military profession seem only to be compensated by a life of pleasure and idleness; but if the duties of the soldier are incessantly aggravated by the labors of the peasant, he will at last sink under the intolerable burden, or shake it off with indignation. The imprudence of Probus is said to have inflamed the discontent of his troops. More attentive to the interests of mankind than to those of the army, he expressed the vain hope, that, by the establishment of universal peace, he should soon abolish the necessity of a standing and mercenary force.1201 The unguarded expression proved fatal to him. In one of the hottest days of summer, as he severely urged the unwholesome labor of draining the marshes of Sirmium, the soldiers, impatient of fatigue, on a sudden threw down their tools, grasped their arms, and broke out into a furious mutiny. The emperor, conscious of his danger, took refuge in a lofty tower, constructed for the purpose of surveying the progress of the work.1202 AD 282-08 The tower was instantly forced, and a thousand swords were plunged at once into the bosom of the unfortunate Probus. The rage of the troops subsided as soon as it had been gratified. They then lamented their fatal rashness, forgot the severity of the emperor whom they had massacred, and hastened to perpetuate, by an honorable monument, the memory of his virtues and victories.1203