The Byzantine Empire

by Charles Oman

But the main lines of the war can be reconstructed with accuracy. The Saracen horde under Abu Obeida emerged from the desert in the spring of 634 and captured Bostra, the frontier city of Syria to the east, by the aid of treachery from within. The Romans collected an army to drive them off, but in July it was defeated at Aijnadin [Gabatha] in Ituraea. Thoroughly roused by this disaster Heraclius set all the legions of the East marching, and sixty thousand men crossed the Jordan and advanced to recover Bostra. The Arabs met them at the fords of the Hieromax, an Eastern tributary of the Jordan, and a fierce battle raged all day. The Romans drove the enemy back to the very gates of their camp, but a last charge, headed by the fierce warrior Khaled, broke their firm array when a victory seemed almost assured. All the mailed horsemen of Heraclius, his Armenian and Isaurian archers, his solid phalanx of infantry, were insufficient to resist the wild rush of the Arabs. Urged on by the cry of their general, “Paradise is before you, the devil and hell-fire behind,” the fanatical [pg 163] Orientals threw themselves on regiment after regiment and drove it off the field.

All Syria east of Jordan was lost in this fatal battle. Damascus, its great stronghold, resisted desperately but fell early in 635. Most of its population were massacred. This disaster drew Heraclius into the field, though he was now over sixty, and was beginning to fail in health. He could do nothing; Emesa and Heliopolis were sacked before his eyes, and after an inglorious campaign he hurried to Jerusalem, took the “True Cross” from its sanctuary, where he had replaced it in triumph five years before, and retired to Constantinople. Hardly had he reached it when the news arrived that his discontented and demoralized troops had proclaimed a rebel emperor, though the enemy was before them. The rebel—his name was Baanes—was put down, but meanwhile Antioch, Chalcis, and all Northern Syria fell into the hands of the Arabs.

Worse yet was to follow. In the next year, 637, Jerusalem fell, after a desperate resistance, protracted for more than twelve months. The inhabitants refused to surrender except to the Caliph in person, and the aged Omar came over the desert, proud to take possession of the city which Mahomet had reckoned the holiest site on earth save Mecca alone. The Patriarch Sophronius was commanded to guide the conqueror around the city, and when he saw the rude Arab standing by the altar of the Church of the Holy Sepulchre, cried aloud, “Now is the Abomination of Desolation, which was spoken of by Daniel the prophet, truly in the Holy Place.” The Caliph did [pg 164] not confiscate any of the great Christian sanctuaries, but he took the site of Solomon's Temple, and erected on it a magnificent Mosque, known ever since as the Mosque of Omar.

The tale of the last years of Heraclius is most melancholy. The Emperor lay at Constantinople slowly dying of dropsy, and his eldest son Constantine had to take the field in his stead. But the young prince received a crushing defeat in 638, when he attempted to recover North Syria, and next year the Arabs, under Amrou, pressed eastward across the Isthmus of Suez, and threw themselves upon Egypt. Two years more of fighting sufficed to conquer the granary of the Roman Empire; and in February, 641, when Heraclius died, the single port of Alexandria was the sole remaining possession of the Romans in Egypt.

The ten years' war which had torn Syria and Egypt from the hands of the unfortunate Heraclius had been even more fatal to his Eastern neighbour. The Arabs had attacked the Persian kingdom at the same moment that they fell on Syria: two great battles at Kadesia [636] and Yalulah [637] sufficed to place all Western Persia in the hands of the Moslems. King Isdigerd, the last of the Sassanian line, raised his last army in 641, and saw it cut to pieces at the decisive field of Nehauend. He fled away to dwell as an exile among the Turks, and all his kingdom as far as the borders of India became the prey of the conquerors.

Heraclius had married twice; by his first wife, Eudocia, he left a single son, Constantine, who should [pg 165] have been his sole heir. But he had taken a second wife, and this wife was his own niece Martina. The incestuous choice had provoked much scandal, and was the one grave offence which could be brought against Heraclius, whose life was in other respects blameless. Martina, an ambitious and intriguing woman, prevailed on her aged husband to make her eldest son, Heracleonas, joint-heir with his half brother Constantine.

This arrangement, as might have been expected, worked very badly. The court and army was at once split up between the adherents of the two young Emperors, and while the defence of the empire against the Saracens should have been the sole care of the East-Romans, they found themselves distracted by fierce Court intrigues. Armed strife between the Emperors seemed destined to break out, but after reigning only a few months Constantine III. died. It was rumoured far and wide that his step-mother had poisoned him, to make the way clear for her own son Heracleonas, who immediately proclaimed himself sole emperor. The senate and the Byzantine populace were both highly indignant at this usurpation, for the deceased Constantine left a young son named Constans, who was thus excluded from the throne to which he was the natural heir. Heracleonas had reigned alone no more than a few weeks when the army of the East and the mob of Constantinople were heard demanding in angry tones that Constans should be crowned as his uncle's colleague. Heracleonas was frightened into compliance, but his submission only saved him for a year. In the summer [pg 166] of 642 the senate decreed his deposition, and he was seized by the adherents of Constans and sent into exile, along with his mother Martina. The victorious faction very cruelly ordered the tongue of the mother and the nose of the son to be slit—the first instance of that hateful Oriental practice being applied to members of the royal house, but not the last.

Constans II. was sole emperor from 642 to 668, and his son and successor, Constantine IV., reigned from 668 to 685. They were both strong, hard-headed warrior princes, fit descendants of the gallant Heraclius. Their main credit lies in the fact that they fought unceasingly against the Saracen, and preserved as a permanent possession of the empire nearly every province that they had still remained Roman at the death of Heraclius. During the minority indeed of Constans II., Alexandria[20] and Aradus, the two last ports preserved by the Romans in Egypt and Syria were lost. But the Saracens advanced no further by land; the sands of the African desert and the passes of Taurus were destined to hold them back for many years. The times, however, were still dangerous till the murder of the Caliph Othman in 656, after which the outbreak of the first civil war among the Moslems—the contest of Ali and Moawiah for the Caliphate—gave the empire a respite. Moawiah, who held the lands on the Roman frontier—his rival's power lying further to the east—secured a free hand against Ali, by making [pg 167] peace with Constans. He even consented to pay him a small annual subsidy so long as the truce should last. This agreement was invaluable to the empire. After twenty-seven years of incessant war the mangled realm at last obtained an interval of repose. It was something, too, that the Saracens were induced to pause, and saw that the extension of their conquests was not destined to spread at once over the whole world. When they realized that their victories were not to go on for ever, they lost the first keenness of the fanatical courage which had made them so terrible.

Freed from the Saracen war, which had threatened not merely to curtail, but to extinguish the empire, Constans was at liberty to turn his attention to other matters. It seems probable that it was at this moment that the reorganization of the provinces of the empire took place, which we find in existence in the second half of the seventh century. The old Roman names and boundaries, which had endured since Diocletian's time, now disappear, and the empire is found divided into new provinces with strange denominations. They were military in their origin, and each consisted of the district covered by a large unit of soldiery—what we should call an army corps. “Theme” meant both the corps and the district which it defended, and the corps-commander was also the provincial governor. There were six corps in Asia, called the Armeniac, Anatolic, Thracesian, Bucellarian, Cibyrrhæot, and Obsequian themes. Of these the first two explain themselves, they were the “army of Armenia” and the “army of the East”; [pg 168] the Obsequian theme, quartered along the Propontis, was so called because it was a kind of personal guard for the Emperor and the home districts. The Thracesians were the “Army of Thrace,” who in the stress of the war had been drafted across to Asia to reinforce the Eastern troops. The Bucellarii seem to have been corps composed of natives and barbarian auxiliaries mixed; they are heard of long before Constans, and he probably did no more than unite them and localize them in a single district. The Cibyrrhæot theme alone gets its name from a town, the port of Cibyra in Pamphylia, which must have been the original headquarters of the South-Western Army Corps. Its commander had a fleet always in his charge, and his troops were often employed as marines.[21]

The western half of the empire seems to have had six “Themes” also; they bear however old and familiar names—Thrace, Hellas, Thessalonica, Ravenna, Sicily, and Africa, and their names explain their boundaries. In both halves of the empire there were, beside the great themes, smaller districts under the command of military governors, who had charge of outlying posts, such as the passes of Taurus, or the islands of Cyprus and Sardinia. Some of these afterwards grew into independent themes.