Norman Invasion of Illyria

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Norman cavalry.

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Over a quarter century three popes, reluctantly, had come to the same conclusion: that it would be better to recognize, and try to guide, the growing Norman power in the south of Italy than to see it directed against their interests. Leo in 1053, Nicholas in 1059, and now Gregory in 1080, had each been obliged by the force of circumstances to confirm the Normans as vassals in the territories they had conquered. Each time, the extent of those territories had increased, as had the need of the papacy for Norman military help.

Pope Gregory, at Ceprano, had agreed to an alliance with the Normans, whom he had so long distrusted, only because he needed them, desperately, to counterbalance the military force that King Henry, finally victorious over the Saxons, was threatening to bring against the papacy. The pope’s only other major supporter in Italy, Duchess Matilda of Tuscany, could not spare enough troops to do more than guarantee the pontiff’s safety in still friendly Rome. But Henry was threatening to invade with a considerable force, aiming finally to obtain his coronation and an end to the papacy’s interference, as he saw it, in the affairs of the German church. Only the Normans- Jordan of Capua but particularly Robert Guiscard – could defend the pope and the reform movement (however tenuous Norman support for the reforms may in fact have been). It is scarcely surprising, therefore, that rumors began to circulate that summer that Gregory was planning to reward Guiscard by crowning him, rather than Henry, as emperor if he drove off the German threat.

Whatever the truth of those rumors may have been, Guiscard was not interested in such a farfetched scheme. He saw little advantage in getting involved in the complications of north European politics, much less as the pope’s creature. Ever ambitious and alert to opportunity, he wanted to keep his freedom of action. He was helped toward that objective by Henry himself, who suddenly handed him an excellent card to play. The king had renewed his courtship of Robert, urging him to desert the pope’s cause in return for investiture as imperial vassal in the March of Fermo, in the Abruzzi, plus offering a marriage alliance with the royal house – one of the available Hauteville daughters to King Henry’s son Conrad. However Guiscard, once again preferring to be a vassal of the militarily weak pope rather than giving the powerful emperor-designate cause to meddle in his activities, declined the new offer. He was, at the same time, careful to inform Pope Gregory of Henry’s offer (as well, of course, as his refusal), thereby gaining not only credit for loyalty, but also additional leverage over the increasingly anxious pontiff.

Even more importantly, Guiscard had more immediate plans, closer to hand. Although the pope had refused to confirm him as lord of Amalfi, Salerno, or in the March of Fermo, the ambiguous formula reached at Ceprano meant in reality that his possession of those lands had been recognized, as no one’s vassal. Robert intended to push forward, to reinforce and expand his domain by controlling more of the Abruzzi, and he considered that he needed neither the pope’s acquiescence nor the emperor’s license to continue his piecemeal advance. But even that would wait. For the present, he had still grander aspirations, well beyond Italy, and had even gotten Pope Gregory to bless them at Ceprano. Guiscard was planning to attack Byzantium itself.

Strategy as well as his always restless ambition had propelled Guiscard toward this new venture. His ambition was fueled by a mixture of admiration, envy and greed. Over the years, he and his fellow Normans had been powerfully affected by the rich culture, the administrative capabilities, the luxury, and the wealth of the empire from which they had stolen their lands. Almost twenty years of rule in heavily Hellenized Calabria had subtly affected Robert, to the degree that his initial interest in and appetite for Byzantium’s riches had grown into emulation of Byzantine ways. Such emulation, indeed, was politically useful, since adopting elements of eastern panoply and ritual was helping the Normans appear as the inheritors of Byzantium; it increased their legitimacy among their new subjects. Robert had even gone so far as to copy imperial motives into his own seals and otherwise present himself as the successor to the emperor; he used the title “dux imperator” and on major occasions wore copies of the imperial robes of state.

Almost as if to justify this presumption of his, Robert had, since1071, received a series of tentative approaches from successive emperors in Constantinople. Seeking because of their military weakness to bring their powerful neighbor into their diplomatic circle of influence, the emperors had suggested marriage alliances between the upstart Hautevilles and the imperial family. This was indeed heady stuff for a son of Tancred, the simple knight from Hauteville. By the terms of the marriage agreement that had finally been concluded with Basileus Michael in 1074, Robert had been promised the title of “nobelissimus,” only a step below that of Caesar, and would be entitled to wear the imperial purple. Even more enticingly, he could envisage that a descendant of his might some day sit on the throne in Constantinople.

However seductive the ideas of marriage ties with the rulers of Byzantium might be, they promised future benefit at best. For the present, the two states were still enemies. Byzantine agents and diplomacy were constantly at work to challenge Norman occupation of the lost Italian provinces. From Illyria, across the narrow Adriatic Sea, Byzantine governors were only too happy to offer asylum to Robert’s opponents, such as his troublesome nephews Abelard and Herman, or to finance and encourage any potentially seditious barons in Apulia.

Duke Robert’s proposed strategy was typically bold. The current weakness of Byzantium made it opportune to secure his hold in Italy by carrying the war into the empire and destabilizing his old enemies. Robert had been fighting the Byzantines since his arrival in Italy, and had defeated their armies often enough to be scornful of their military qualities. He had attacked the empire once before and been unsuccessful, but that had been merely a tactic to put them on the defensive. This time, he saw a chance to defeat his enemies, gain plunder, perhaps new lands, maybe even a throne. His newly developed naval power enabled him to take a major force across the sea, and to fight his old enemies in their own lands. The prospects were good, because the empire was in crisis; it had lost almost all of Anatolia to the Seljuks, and a new Basileus was faced with a chain of insurrections in his own military. Robert, sensing a moment of opportunity, began preparations for an invasion.

Guiscard also had a politically correct pretext to attack. Basileus Michael had recently been deposed, and the wedding alliance he had negotiated with the Hautevilles had been dishonored. The new emperor had packed off Robert’s daughter Helen to a convent, where she was being held as a pawn for a future move on the diplomatic chessboard. Robert must have been disappointed at the failure of the proposed marriage alliance; it had promised much. But he knew, all the same, that Constantinople’s politics were an uncertain thing: that Helen might never have sat on the throne, or given birth to a claimant to the throne even in the best of circumstances. Her status as virtual hostage, in fact, could even replace her intended marriage as a means to his ends. So he demanded that her rights, and his, under the old agreement be honored – even though the intended groom, Constantine, was as out of favor as his deposed father. When these demands were ignored or rejected, as the wily Guiscard had no doubt expected they would be, he demanded the release of his daughter, and began his preparations to invade if his demands were not met.

Guiscard embellished his pretext for intervention, in addition, by a somewhat transparent but useful fiction: he claimed that the deposed Michael had somehow escaped to Italy from his exile to a monastery. The purported Michael, by most accounts a wandering monk who had been drafted for the occasion, became a permanent attachment to Guiscard’s court, where he was treated with the deference due to a former emperor and advanced as the living justification for the coming expedition. Guiscard had even gotten poor Pope Gregory, at Ceprano, to support the claims of the counterfeit Basileus.

Preparations for the invasion of Illyria had, by the early spring of 1081, reached a climax. Robert had been able to raise a very substantial force because, for the first time in years, he had neither internal nor external threats to arm against. Roger, at the same time, was slowly but successfully subduing the remaining Muslim opposition in Sicily, and neither needed nor wanted Robert’s help on the island. Jordan of Capua, for the moment joined with Robert as an ally of the pope, was potentially trouble, but nowhere near the man his father had been; Robert doubtless felt he could readily take care of the young man if the need arose. The possibility that King Henry would invade, and his own duty to defend the pope in that event, was an unfortunate cloud on the duke’s horizon, but it could be treated as a distant threat. For the moment, Guiscard had the pope’s concurrence for the expedition, indeed his assistance, in the form of a letter of support addressed to the bishops of southern Italy.

He raised an exceptionally large force, consonant with his new power and wealth. It included contingents from his vassals but also many mercenaries: Muslims from Sicily, Greeks, Lombards, and adventurers from all over. In truth, the hired hands would be needed, because Robert’s vassals had shown themselves to be grudging supporters of an expedition that would, most likely, benefit Guiscard more than themselves. Nor did the taxes that the duke raised to pay for the expedition, or the hostages he took to assure the good behavior of his troublesome barons, increase the popularity of his effort. The mustering of the invasion force had consequently been almost a two-year affair. Ships had been mustered from his coastal cities, and still more hired from the Adriatic state of Ragusa; the naval contingent numbered a full 150 boats. Figures for the army, as usual, vary, but it was a force of over 1,000 knights, Normans and others who formed the nucleus, supported by as many as 20,000 soldiers and auxiliaries, siege engines, horses and supplies.

Duke Robert, still strong and magnificent at 64, was optimistic and an inspiration as usual to the gathering troops. His first son, the even more physically imposing Bohemund, was to be the second in command, and to lead the advance guard of the army into Illyria. Sichelgaita, often clad in armor like her husband, was with the army and a constant presence by Robert’s side, presumably as liaison to their son Roger, who was to be left in charge in Italy.’ All was ready, or almost so. And then, before the expedition could set sail, the political ground began to shift.

Suddenly, the situation in Constantinople had changed. The latest emperor had been overthrown in his turn, by the talented and energetic general Alexius Comnenus. Alexius had been friendly with the deposed Emperor Michael, and was, it was rumored, inclined to negotiate with Robert over his demands. In fact, an envoy whom Guiscard had sent to Constantinople over the winter had returned to Italy with a recommendation that Robert postpone his invasion in light of the changing situation, and the fact that Helen’s intended, Constantine, was likely to be restored to the purple as Alexius’ co-ruler. This was not news, however, that Robert wanted to listen to. His rage at hearing the advice of the envoy, an unfortunate Count Radulf, was reportedly monumental. He would not be deterred. He had invested too much in the expedition at that point to pull back, and to delay might allow Alexius to remove his pretext for invasion by returning Helen to her family, or exposing the false Michael. As Princess Anna Comnena wrote succinctly and dismissively a half century later,

That man Robert, who from a most inconspicuous beginning had grown most conspicuous and amassed great power, now desired to become Roman Emperor, and with this object sought plausible pretexts for ill-will and war against the Romans.’

In Italy, the situation was also changing. King Henry had finally begun his invasion, causing the pope to send messages of alarm, requesting that Robert come immediately to his aid. Robert could not ignore the pope’s pleas for help, but he had no intention of calling off his expedition so readily. He made a short trip to Tivoli, where he offered the pope a contingent of troops under his son and regent Roger Borsa, and reassured the pontiff that he would not fail him in the event of real need. But he refused to call off his expedition. As it happened, Robert’s judgment proved correct; Henry had come south with too few troops to do more than occupy the suburbs of Rome, as he did several months later. When the city proved loyal to the pope, Henry withdrew and no relief army was needed.

The Illyrian expedition indeed had already begun. The advance guard under Bohemund had left in April, rapidly capturing the port of Valona across the sea from Otranto, a situation that would provide an excellent bridgehead for the main army. The main force set sail in late May, joining with Bohemund’s contingent, and the combined force soon captured the island of Corfu, to the south of Valona. With the sea thus secured against a relief fleet coming from Constantinople, the invasion force was able to consolidate – the entire army did not cross until mid June because of storms- and then proceed northward up the coast to Guiscard’s initial goal, the capital city of Durazzo. It would take a serious siege to capture the town, which enjoyed a strong position on a high peninsula guarded by marshes on the land side. But Robert’s intelligence services were, as usual, aware of the enemy’s weaknesses, which in this case turned out to be the will of the city’s military commander, one George Monomachus. An appointee of the deposed emperor, Monomachus did not know how he stood with the new order in Constantinople, and had begun to negotiate with Robert’s envoys in an effort to save his own neck. It looked for a moment as if the city might fall to the Norman army without a fight.

Any optimism on this score was soon shown to be misplaced. The new Basileus, the Normans rapidly found out, was an adversary of a quality they had not seen for over a generation. Small, dark and unpreposessing, Alexius was the nephew of a previous emperor, one of the country’s best generals from a family of distinguished military leaders, and a man of shrewd and tenacious purpose. He, too, could act fast. In the present danger, he had taken two immediate steps to defend Durazzo. The first was to send a talented soldier, George Paleologus, to replace the wavering commander, Monomachus, and to harden the city’s defenses. The second was to appeal to the Venetians, the preeminent Adriatic naval power, for help in countering the Norman naval advantage. The Venetians knew they held a strong hand in those negotiations and drove a hard bargain, gaining unprecedented trade concessions in Constantinople in return for sending their battle-trained fleet to sea.

The Venetian navy appeared off Durazzo just in time, only days after the Norman army had arrived to invest the town. A fiercely fought naval engagement several days later demonstrated how great was the Venetian tactical superiority at sea. The Norman fleet was badly mauled, and from then on was obliged to limit its operations. The encirclement of Durazzo was incomplete. With the Venetian navy reinforcing the city’s defenses as well as hindering the Normans’ resupply efforts, and Paleologus energiz ing the Greek army, whatever advantage the Normans had had by their well-timed arrival had been lost. The city’s morale was maintained by the promise of a relief army, and the siege settled into a sort of stalemate, punctuated by fierce but indecisive engagements. The Normans could neither cut off the city nor breach the walls, since their siege engines, transported at such great effort from Italy, repeatedly proved ineffective against Paleologus’ determination and ingenuity in devising counter mechanisms.

The stalemate was broken in mid October, when Emperor Alexius arrived at the head of the long-promised relief army. Paleologus was able to join him at his camp outside the city, where a hasty war council was held. In the council, Paleologus argued for reinforcing the city and driving the Normans off through attrition. Disease in their camp, their supply problems, and the coming winter, he argued, would break the Norman siege in time, and more surely than a battle. He may have been right. Morale in the Norman camp was not high, and Robert had had little success to show his army, camped as it was on a hostile and unhealthy shore and trying to maintain a costly siege against a tenacious and now heavily reinforced enemy. But Alexius, too, had his problems; he could not count on the loyalty of his hastily recruited army over a long siege, and there was clamor in the capital for an immediate and decisive victory from the new emperor. Like Robert Guiscard, he was a man used to victory in battle, confident in his abilities, and capable of inspiring his troops to great effort. He chose to fight.

Robert drew up his army north of the city, its right wing with its motley assortment of mercenary detachments anchored against the sea where it could not be outflanked, and Bohemund on his left, inland of his own central detachment. In an effort to inspire a determined stand, moreover, he had burned the army’s boats and deployed it with a river to its back. The Byzantine army that formed ranks on the plain to attack the Normans encompassed a disparate collection of allied and mercenary troops cobbled together from a military still reeling from the disaster at Manzikert and repeated military insurrections. But it also contained elements of the empire’s elite units, the Bucellarion Guard and the imperial bodyguard of Varangians. The Varangians, in particular, were highly motivated. Now heavily manned by Anglo-Saxons driven from their native England by the Norman invaders there, they sought revenge in the coming fight for their fifteen years of exile.

As it was, in their eagerness to engage, the Varangians determined the course of the battle. Their initial attack, on the Norman right, was devastating. Against the onslaught of the Anglo-Saxons wielding their huge two handed axes, the Norman right wing, foot, and for once even the cavalry, collapsed.

A rout was narrowly avoided, partly because the river blocked the retreat of the Norman auxiliaries, but due also to the valiant efforts of heroic Sichelgaita. Fully armed and brandishing a spear, if Anna Comnena is to be believed, the warrior Duchess left her position by her husband’s side and rode toward the action, urging the fleeing soldiers to stand firm and shaming them, by word and example, to rally. Her efforts were rewarded, as the line stiffened once again and the Varangians, their charge finally exhausted, now found themselves in an exposed position well in advance of the Byzantine center. Meanwhile Bohemund, on the left, had seen relatively light action because an effort by the Bucellarion Guard to outflank him had been blocked by the river. He was able to send cavalry to the Norman right wing, where they fell on the now exposed Varangians and cut them down wholesale.

The battle was turned. A sortie from the city by Paleologus was beaten off, and now some of Alexius’ allies, notably the Serbians and Turks, began to desert the field. As the imperial army slowly, and then rapidly, dissolved, only the Varangians continued to hold their ground. The brave remnant of the proud but reckless detachment finally retreated to a small chapel, where they were burned to death by the now victorious Norman army. Alexius and George Paleologus, who had been cut off from his command when his sortie failed, were forced to flee among the remnants of the army, the emperor, according to his daughter Anna, barely escaping capture.

For the Byzantines, the defeat was humiliating, but not fatal. The Norman army, admittedly, was able to follow up its victory with relative ease. Marching along the great Roman Via Egnatia, the invaders had occupied most of Illyria by spring, even securing the surrender of the important fortress town of Kastoria in Macedonia. But Durazzo had succeeded in holding out until late February, falling in the end through the treachery of its foreign inhabitants rather than by assault. The Venetians continued to control the sea, harassing Norman communications and resupply efforts. After the fall of Kastoria, moreover, the Norman army had begun to lose its momentum and suffer from supply problems, disease, and attrition from the long field campaign.

The tenacious Alexius was determined to hold on and to confound his Norman opponent. Guiscard, for the first time, had met his match.

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