The Roman or Byzantine empire, at this period, embraced almost exactly the present territory of the Turkish dominions in Europe and Asia Minor, with the addition of Greece—Constantinople being its capital. Italy was held by the Goths; Corsica, Sardinia and Barbary in Africa, by the Vandals.

Justin I., an Illyrian peasant, having distinguished himself as a soldier, had become emperor. His education was of course neglected, and such was his ignorance, that his signature could only be obtained by means of a wooden case, which directed his pen through the four first letters of his name. From his accession, the chief administration of affairs devolved on Justinian, his nephew and intended heir, whom he was reluctantly compelled to raise from office to office, and at length to acknowledge as his partner on the throne. His death, after a languid reign of nine years and a life of nearly fourscore, left Justinian sole sovereign in name, as well as in fact.

In order to appreciate the life and actions of Belisarius, it is necessary to understand the character of the new emperor, during whose long reign his great exploits were performed. The first act of Justinian on ascending the throne, was to marry a dissolute actress, named Theodora, who, though licentious, avaricious, cruel and vindictive, soon acquired an almost complete control over him. His mind was essentially feeble and inconstant, and, though his Christian faith was doubtless sincere, it was less fruitful of virtues than of rites and forms. At his accession his treasury was full; but it was soon exhausted by his profuseness, and heavy taxes were imposed, offices put to sale, charities suppressed, private fortunes seized, and, in short, every act of rapacity, injustice and oppression, practised by his ministers, to support the wasteful magnificence of the court.

The troops of the empire at this period were by no means what they had been in the time of Scipio and Cæsar. They consisted, to a great extent, of foreign mercenaries, and were divided into squadrons according to their country; thus destroying all unity of feeling, and annihilating that national spirit which once made the Roman arms the terror of the world. These hired troops, which greatly outnumbered the native soldiers, marched under their own national banner, were commanded by their own officers, and usually followed their own military regulations. The inefficiency of such mingled and discordant forces, is obvious; yet it was under such a system that Belisarius entered upon his military career.

With a feeble and corrupt government, an ill-appointed and trustless army, the Roman empire was still surrounded with powerful enemies. It is scarcely possible to conceive of a great nation in a condition of more complete debility and helplessness, than was the kingdom of the Cæsars, at the period in which Belisarius appears upon the active stage of life.

Kobad, king of Persia, after a long cessation of hostilities, renewed the war toward the close of Justin’s reign, by the invasion of Iberia, which claimed the protection of the emperor. At this period, Belisarius, being about twenty years of age, had the command of a squadron of horse, and was engaged in some of the conflicts with the Persian forces, on the borders of Armenia. In conjunction with an officer named Sittas, he ravaged a large extent of territory, and brought back a considerable number of prisoners.

On a second incursion, however, they were less fortunate; for, being suddenly attacked by the Persian forces, they were entirely defeated. It appears that Belisarius incurred no blame, for he was soon after promoted to the post of governor of Dara, and the command of the forces stationed there. It was at this place that he chose Procopius, the historian, as his secretary, and who afterwards repaid his kindness by a vain attempt to brand his name with enduring infamy.

Soon after Belisarius obtained the command of Dara, Justinian came to the throne, and enjoined it upon his generals to strengthen the defences of the empire in that quarter. This was attempted, but the Persians baffled the effort. Belisarius was now appointed general of the East, being commander-in-chief of the whole line of the Asiatic frontier. Foreseeing that a formidable struggle was soon to ensue, he applied himself to the raising and disciplining an army. He traversed the neighboring provinces in person, and at last succeeded in mustering five and twenty thousand men. These, however, were without discipline, and their spirit was depressed by the ill success that had long attended the Roman arms.

In this state of things, the news suddenly came, that 40,000 men, the flower of the Persian army, commanded by Firouz, was marching upon Dara. Confident of victory, the Persian general announced his approach, by the haughty message that a bath should be ready for him at Dara the next evening. Belisarius made no other reply than preparations for battle. Fortifying himself in the best manner he was able, he awaited the onset; exhorting his men, however, by every stimulating motive he could suggest, to do honor to the name and fame of Rome.

The battle began by a mutual discharge of arrows, so numerous as to darken the air. When the quivers were exhausted, they came to closer combat. The struggle was obstinate and bloody; and the Persians were already about to win the victory, when a body of horse, judiciously stationed behind a hill by Belisarius, rushed forward, and turned the tide of success. The Persians fled, and the triumph of Belisarius was complete. They left their royal standard upon the field of battle, with 8000 slain. This victory had a powerful effect, and decided the fate of the campaign.