Battle of Heliopolis

Infobox Military Conflict
conflict=Battle of Heliopolis
partof=the Byzantine-Arab Wars
date=July 640
place=Near Heliopolis, Egypt
result=Decisive Muslim victory
combatant1=Rashidun Caliphate
combatant2=Byzantine Empire
commander1=Amr ibn al-A'as
commander2=Theodore
strength1=Possibly 15,000
strength2=Possibly 20,000 or higher
casualties1=Unknown;
casualties2=Unknown, but virtually the entire Byzantine force was killed or captured

The Battle of Heliopolis, or "Ayn Shams," was a decisive battle between Arab Muslim armies and Byzantine forces for the control of Egypt. Though there were several major skirmishes after this battle, it effectively decided the fate of the Byzantine rule in Egypt, and opened the door for the Muslim conquest of the Byzantine Exarchate of Africa.

Background to the Islamic Expansion Era

At the time of the death of Prophet Muhammad on 6 July 632, Islam had effectively unified the entire Arabian peninsula. Within the next twelve years, under the rule of the first two “rightly guided Caliphs” an Islamic empire arose that expanded into all of what used to be the Sassanid Persian Empire, and almost all of the eastern provinces of what was the East Roman (Byzantine) Empire. The Muslim Caliphate continued to expand in a near-unstoppable onslaught until, by the turn of the 8th century, it stretched from the Atlantic Ocean and the Iberian peninsula in the west to Central Asia in the east.

Under the first Caliph, Abu Bakr, force was used to prevent unrest and rebellion from causing the collapse of the new Islamic “state”, and the first raids were carried out into the territory of the Sassanid Empire. But the all out attack on the Empire came with the ascension of the second Caliph, the man John Bagnell Bury called “the great and austere Omar.” Omar’s ascension as Caliph left the rule of the Islamic world in the hands of a man determined to not just prevent the collapse of what Muhammad had built, but to expand it to the ends of the civilized world. "Umar (634-644)", "The Islamic World to 1600" Multimedia History Tutorials by the Applied History Group, University of Calgary. [http://www.ucalgary.ca/applied_history/tutor/islam/index2.html Last accessed 20 Oct 2006] ] When Omar began his rule in 634, the international situation in the Middle East could hardly have been more propitious for a new and ambitious power: the region's two traditional superpowers, the East Roman and the Sassanid Empires, had exhausted each other in a conflict that raged for over 20 years. By the 630s, Persia had descended into a state of civil war, while Byzantium, under the aging emperor Heraclius, its manpower and resources depleted in the life-and-death struggle with its old adversary, was struggling to re-establish its authority in its newly re-conquered eastern provinces. The two states were thus in considerable internal turmoil, and unable to either stop the Muslim expansion or to recover from its first blows. It is unknown whether Umar intended from the outset to conquer both the Sassinid and the Byzantine Empire, or simply allowed raids, and then, perceiving their weakness, followed up with full-scale invasion.

Islamic Expansion begins

At this moment, amidst the civil war raging in Persia, and exhaustion raging in Byzantium, Omar effectively began the Islamic Expansion Era, and one empire and its culture of a millennium was swept into the dusty annals of history, and a second nearly so. The Arabs, who had been too divided in the past to pose a military threat, now comprised one of the most powerful states in the region, and were energized by their new conversion to Islam.

The Sassanid Empire collapses

The main military commander of the Muslims, Khalid ibn al-Walid, was able to conquer most of Mesopotamia (Iraq) from the Persians in a span of nine months, from April 633 until January 634, after a series of battles. But the invasion of the Sassanid heartland did not begin until Omar became Caliph. In five short years, from 633 to 638, the Arabs destroyed the Sassanid Empire. The raging civil wars left the Empire unable to mount an effective defense against the Islamic armies. The power of the central authority passed into the hands of the generals. It would take several years for a strong king to emerge from a series of coups, and the Sassanids never had time to fully recover before the Arabs were, quite literally, in their midst. [Chamber]

The loss of Byzantine Syria

Sir Walter Scott in 1915 in the "Gentleman’s Quarterly", wrote of the Byzantine loss of Egypt:

::“The most noteworthy event of the interval between the conquest of Egypt in 616-618 by the Persians under the last great Sassanid rulers, Khosrau, and the Arab invasion of 639 was the reoccupation of the land of the Pharaohs by the Romans. To the modern historian, this period of warfare between the Persians and the Romans was the “first crusade,” in which Heraclius inspired a moribund Roman state to somehow rise up and vigorously route the forces of the Great Sassanid in a succession of brilliant campaigns. Heraclius not only reconquered all of his lost provinces, but also actually increased the size of the Empire! But then, out of the desert, rode a horde of fierce boudins practicing a new religion of which the west knew nothing. Of that faith, it is said that Heraclius' father knew it not, but his sons would know it all too well, as only the walls of the Mother of Cities saved it from the fate of Damascus and all the cities of the fallen empire. Nor was Rome alone in her losses – the Mohammedans made no distinction between Roman and Persia. Only the mighty walls of Constantinople saved her from the fate of fallen Persia…”Butler, Alfred, ‘’The Arab Conquest of Egypt and the Last Thirty years of Roman Dominion"] Kaegli, Walter. " Heraclius: Emperor of Byzantium."]

Heraclius fell ill soon after his triumph over the Persians and never took the field again. When the Muslim Arabs attacked Syria and Palestine 634, he was unable to oppose them personally, and his generals failed him. The Battle of Yarmuk in 636 resulted in a crushing defeat for the larger Roman army and within three years, Syria and Palestine were lost again. By the time of Heraclius' death, most of Egypt had fallen as well.

Arab invasion of Egypt

The attack in Africa was shocking and unexpected to the Byzantines. Heraclius’s generals had advised him that the Muslims would need a generation to digest Persia before undertaking another wholesale invasion. The increasingly frail Emperor was forced to depend on his generals, and the result was complete disaster.

In 639, less than a year after the complete fall of the Sassanid Empire, an army of some 4,000 commanded by Amr ibn al-A'as, under orders of Omar, began the invasion of the Diocese of Egypt. That relatively tiny force marched from Syria through El-Arish, easily took Farama, and from there proceeded to Bilbeis, where they were delayed for a month. But having captured Bilbeis, the Arabs moved again, eerily echoing Heraclius’ successful campaign against the Sassanids just a short decade ago. A small force, commanded by a charismatic and tactically brilliant commander went behind enemy lines, and caused chaos all out of proportion to their size. They laid siege to Babylon, which after a small effort at negotiation, was taken by storm on 6 April 640, which was Good Friday. Having finished there, Amr rode on. He and his army marched (or rode) to a point on the Nile called Umm Dunein. The siege of this city caused Amr and his horsemen considerable difficulty as they lacked siege engines and overwhelming numbers. After finally taking Umm Dunein, Amr crossed the Nile to Fayuum. There, on June 6, 640, a second army dispatched by Omar arrived at Heliopolis and began to lay siege to it. Amr retraced his route across the Nile River, and united his forces with those of the second army. They began to prepare for movement towards Alexandria – but scouts reported the approach of the Byzantine army.

The battle

At that point the united Arab army was confronted by a Roman army, which Amr, who had taken overall command, defeated at the Battle of Heliopolis. Just as Byzantine generals had failed utterly in Syria, they failed equally spectacularly in Egypt, and the Empire's economically most valuable province after Anatolia was lost. The battle took place sometime in early to mid July 640, near the ancient city of Heliopolis, with Arab forces totaling approximately 15,000 under the command of Amr ibn al-A'as, and the Byzantine forces estimated at well over 20,000 under Theodore, commander of all Byzantine forces in Egypt.

The Byzantine army should have responded sooner, but had not, for reasons that will never be known. Theodore could, and should, have moved far more swiftly to respond, but simply did not. [http://www.ccel.org/g/gibbon/decline/volume2/chap52.htm "The Decline And Fall Of The Roman Empire" by Edward Gibbon] , Chapter LI.]

Though historians such as Butler blame the treachery of the Coptic Christians as well as the failure of the Byzantine generals for the swift fall of the Exarchate of Egypt, Gibbon does not blame anyone as much as he praises the character and genius of Amr for the victory at Heliopolis. Gibbon says "the conquest of Egypt may be explained by the character of the victorious Saracen, one of the first of his nation."

Whether through the foolishness of the Byzantine generals, including Theodore, contributed to what then occurred, certainly Amr fought a brilliant battle at Heliopolis. When the Byzantine army began approaching, Amr divided his army into three separate units, with one detachment under the command of a trusted commander, Kharija. This unit marched abruptly east to near-by hills, where they effectively hid. This unit was to remain there until the Romans had begun the battle, at which point they were to fall on the Roman flank or rear, whichever was more vulnerable. The second detachment Amr ordered to the south, which would be the direction the Romans would flee if the battle went badly. Once the Byzantine forces initiated contact with Amr's forces and commenced an attack, the detachment of Kharija attacked the Byzantine rear, which was completely unexpected by the Romans Theodore had not kept scouts out, or, if he had, he ignored their warning of the approaching Arab horsemen. This attack from the rear created utter chaos among the Byzantine ranks. As Theodore's troops attempted to flee to the south, they were attacked by the third detachment, which had been placed there for just such a purpose. This completed the final break-down and defeat of the Byzantine army, which fled in all directions.

Theodore survived, but with only a tiny fragment of his army, while the remainder was killed or captured. In the battle's aftermath, most of southern and central Egypt fell to Amr's forces. The defeat at Heliopolis was crucial, as it removed the last Roman force standing between the Islamic invaders and the heart of Egypt. However, not only did the Battle of Heliopolis leave Egypt practically defenceless, it also encouraged the disaffected natives, most of whom were Monophysite Christians and had suffered on-and-off persecution at the hands of Constantinople, to rise up against their Roman oppressors. Although the Byzantine Empire was certainly by lineage the Roman Empire, it’s traditions, language, and ruling elite, by this time, were Greek. The Greeks of Egypt, whose numbers could scarcely equal a tenth of the native population, were overwhelmed by the universal defection of those same natives from obedience to the Roman Empire. As Bury wrote in the "History of the Later Roman Empire from Arcadius to Irene":

::”The Greeks had ever been hated, they were no longer feared: the magistrate fled from his tribunal, the bishop from his altar; and the distant garrisons were surprised or starved by the surrounding multitudes.”

The native population had heard that taxation and rule under the Caliphate was far better than that of the Romans, and once the Battle of Heliopolis left the Romans without an army to force their obedience, that obedience was gone, and a large portion of the Coptic Christians sided with the invading Muslims over the Byzantines. Ironically, some Copts believed they would find the Muslims more tolerant than the Byzantines, and of these some turned to Islam. In return for a tribute of money and food for the troops of occupation, the Christian inhabitants of Egypt were excused military service and left free in the observance of their religion and the administration of their affairs, while Amr was Emir of Egypt. A smaller number sided with the Byzantines, hoping that they would provide a defense against the Arab invaders. [http://www.tertullian.org/fathers/nikiu2_chronicle.htm]

It is notable that after the end of Amr's rule in Egypt, the population found their taxes ever increasing. Indeed, under the Umayyad Caliphate the Coptic Christians of Egypt found their taxes higher than the Byzantine Greeks had ever made them. As to religious freedom, the issues there are more fully discussed in the history of Egypt.

Aftermath

The next year and a half were spent on more maneuvers, skirmishes, and sieges before the formal surrender of the capital, Alexandria, took place on 4 November 641, but Sir Walter Scott was correct when he said “the fate of Byzantine Africa was decided at the Battle of Heliopolis.” The permanent loss of the Egypt left the Byzantine Empire without an irreplaceable source of food and money. The loss of Egypt and Syria, followed later by the conquest of the Exarchate of Africa also meant that the Mediterranean, long a "Roman lake", was now contested between two powers: the Muslim Caliphate and the Byzantines. In the event, the Byzantine Empire, although sorely tested, would be able to hold on to Anatolia, while the mighty walls of Constantinople would save it, during two great Arab sieges, from the fate of the Persian Empire.

Footnotes

References

* Bury, J.B. "History Of The Later Roman Empire", Macmillan & Co., 1923.
* Christensen, A., "Sassanid Persia", "The Cambridge Ancient History, Volume XII: The Imperial Crisis and Recovery (A.D. 193–324)", Cook, S.A. et al, eds, Cambridge: University Press.