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For some reason the end of August/beginning of September is a busy season for major battles in Middle Eastern history, like Yarmouk, Chaldiran, and Marj Dabiq. There’s another one coming in a couple of days and another a few days after that, but we’re getting ahead of ourselves. You could argue that of all of these major battles, Manzikert is the most significant. Although it took another 400 years to finally come to fruition, it was the Battle of Manzikert that set in motion the collapse of the Byzantine Empire. Which, if you think about the Byzantines as a continuation of the Roman Empire, means it dealt a mortal blow to a political entity that survived for almost 1500 years (longer if you include the Roman Republic before it). That’s pretty significant.
After Yarmouk, you may recall, the Byzantines retreated to the opposite side of the Taurus Mountains, which separate Anatolia from the Syrian plains to the south. They relied on those mountains, plus the Caucasus in the east, to protect them from Arab/Muslim invaders. For the most part, this strategy worked. Yes, various Islamic armies did invade Anatolia a few times and even besieged Constantinople on a couple of occasions, but keeping an army supplied for an extended stay on the other side of those mountains invariably proved impossible. The terrain was too challenging and Byzantine border skirmishers were too effective, and Constantinople’s walls would eventually suck the life out of any siege. So the Byzantine Empire carried on, albeit at a drastically reduced size.
By the 11th century, military power in the Islamic world (east of Egypt, anyway) had shifted from the Arabs to a few Iranian dynasties and then to the Turks, specifically the Seljuk Turks. The Seljuks claimed descent from a branch of the semi-mythical Oghuz family, the same Turkic family from which the Ottomans and many other Turkic groups claimed descent. I say “semi-mythical” because the Oghuz were definitely real, but the legends told about their origins were not, or at least they can’t be substantiated as such. The Seljuk invasion/migration is considered the first “wave” of Oghuz movement out of Central Asia and into the Middle East. The second wave, if you’re wondering, happened in the 13th century—not in an organized fashion, but as Turkic tribes fled west ahead of the oncoming Mongols.
After converting to Islam sometime in the 10th century, the Seljuks swept through Iran and Iraq in the early 11th century. Along the way, they “liberated” the Abbasid Caliph in Baghdad. Let me explain. In 945 the weakened Abbasids, who were already mostly governing at the whim of their Turkish slave soldiers, had fallen under the “protection” of the Iranian Buyid dynasty from the southern Caspian region. In practice this “protection” meant that the caliphs retained their titles and theoretical authority, but the Buyids ran the caliphate. The Buyids were Shiʿa, and though they never tried to impose Shiʿism on the rest of the empire, the Abbasids appear to have welcomed it when the Sunni Seljuk ruler Tughril Bey (d. 1063) drove the Buyids out of Baghdad in 1055. Of course, instead of restoring that caliph to real power, the Seljuks simply replaced Buyid “protection” with their own. The Seljuks then turned most of their attention toward the Shiʿa Fatimid Caliphate in Egypt, but they also sought to extend their authority into the Caucasus.
The Byzantines, meanwhile, were in the middle of a few decades’ worth of inter-dynastic turmoil. Emperor Michael IV died in 1041 and his successor, Michael V, was assassinated the following year. This brought Constantine IX to power, alongside the empresses Zoe (who married Constantine IX) and Theodora, who were the daughters of Constantine VIII and thus had their own (competing; they seem to have hated each other) claims on the throne.
This triumvirate spent more time purging the palace of supposed enemies than it did defending the empire’s borders, which was perhaps not the most productive use of their time. During Constantine IX’s reign, the Normans drove the Byzantines almost completely out of Italy, the empire was pressed from the north by Serbs and Kievan Rus’, and the Seljuks were ominously waiting on the eastern frontier, making life hard for the empire’s Armenian allies. In 1054, the Byzantines and Seljuks fought a small battle at Manzikert that ended with a Byzantine victory and a Seljuk withdrawal. But Zoe had already died by then (in 1050), and Constantine (in 1055) and Theodora (in 1056) followed relatively soon after. They were succeeded by Michael VI (d. 1059), who almost immediately fell out with his military and was forced to abdicate in 1057 in favor of a general named Isaac Komnenos.
Isaac, then Isaac I, who was Byzantine Emperor from 1057 to 1059, was dead set on rebuilding his weakened army, but his methods for raising the necessary money (confiscating land from nobles and the Orthodox Church) made him unpopular. He fell ill, apparently while hunting, and felt compelled to first name the future Constantine X Doukas as his heir apparent and then to abdicate to a monastery. Constantine X was a weak ruler who allowed the palace bureaucracy to control the empire, which meant that the money Isaac had earmarked for strengthening the army was distributed back to influential nobles and the Church. Meanwhile, in 1064 the Seljuks, now ruled by Sultan Alp Arslan (d. 1072), seized the Armenian city of Ani in the Caucasus, which had been annexed by Constantine IX many years earlier. Constantine X died, and his wife Eudokia became regent for their sons. Because the situation on the eastern frontier looked so dire, she broke a deathbed promise to Constantine and remarried, to a Byzantine general named Romanos Diogenes, who then became emperor in 1068. But he was not universally well-received.
Let’s stop for a second. If all you’re getting from this narrative so far is that the internal workings of the Byzantine Empire were a freaking mess in the late 11th century, then you’re getting the point. In the big picture, what’s happening is that the Macedonian dynasty, which had ruled the empire since Basil I became emperor in 867, had come to an end with the death of Theodora and the failure of her handpicked successor, Michael VI, to hold on to power. Isaac I was the first ruler of the Komnenid dynasty, but their time in the imperial purple was interrupted (they did return to power later) by the Doukids, starting with Constantine X. Romanos, now Emperor Romanos IV, was technically a Doukid but only by marriage, and once he married Eudokia the rest of the family worked hard behind the scenes to get rid of him, as you’ll see below. Dynastic changeover throughout Roman history could range from so smooth as to be almost imperceptible to extremely chaotic. This period very much fits into the latter category.
This is only the simplified version of imperial events, and even simplified it’s almost impossible to follow all the backbiting and claimants to the throne and wives betraying husbands and unscrupulous dudes marrying their way onto the throne. This all matters because, as you’ll see, the real problem for the Byzantines after Manzikert wasn’t so much that they lost the battle, it’s that all this court intrigue then exploded into total chaos. It’s the chaos that allowed the Turks to follow up on their victory by pouring into Anatolia and forever changing both its politics and its demographics.
Romanos IV tried, like Isaac I before him, to rebuild the empire’s military strength. Between his own standing army, his personal guard, and lots of mercenaries, Romanos managed to put together an army that Muslim chroniclers, always willing to invent absurd figures in the name of glorifying their victories, numbered between 200,000 and 400,000 soldiers. The actual Byzantine army was probably more like 40,000 to 70,000 soldiers, and Romanos took it east to fend off the Seljuk threat. It was during this march east that Alp Arslan first seized Manzikert (now the Turkish town of Malazgirt), which then became one of Romanos’s targets.
At some point, for reasons that presumably made sense to him at the time but don’t make a lot of sense to anybody today, Romanos decided to split his army in two, leading one part himself toward Manzikert and sending the other under his trusted general Joseph Tarchaniotes to Khilat (modern Ahlat) to the south. Dividing a force before battle is usually only done in situations where a commander has definite knowledge of an enemy’s disposition and wants to hit them from two places at once. At the very least you only do it if you know you won’t be losing a numerical advantage. It’s possible that Romanos wanted to fortify Khilat before the Seljuks got there, or he might have been hoping to catch them from two sides. But subsequent events would show that he didn’t know where the Seljuks were or how large their army was. And the danger of splitting your army on a hunch is that if you guess wrong, you’ve just done the first half of “divide and conquer” on your enemy’s behalf.
Something happened to this second part of the Byzantine army, because it’s essentially never heard from again. But it’s not clear what that “something” was. Muslim sources record that Alp Arslan met it in battle and wiped it out, but there are no surviving Byzantine sources that mention this. It’s possible that the army just fled, or broke up and wandered off, but that doesn’t seem fair to those fighters or to Tarchaniotes, who was a capable general. Tarchaniotes may have been aligned with a faction at court that opposed Romanos in the name of Constantine X’s son, Michael VII, who was Constantine’s legitimate heir and was Romanos’s junior co-emperor, so he and his army might have just deserted Romanos for that reason. We do know that Tarchaniotes survived until 1074, so whatever happened to his army we do know that it wasn’t a total massacre.
Romanos’s column, meanwhile, arrived and took control of Manzikert, at which point Alp Arslan seems to have offered to negotiate a truce. The Fatimids were his main enemy and it seems he wasn’t looking for a major fight with the Byzantines right at this point. Romanos saw this as his best chance to rid the empire of a major threat, though, and he thought a victory would shore up his precarious position at court, so he attacked. Now the folly of dividing his army came into play, because instead of outnumbering the Seljuks roughly 2-to-1, the Byzantines took the field with an army of about the same size as the army that opposed them.
The Seljuks employed a feigned retreat, which is a standard tactic but historically pretty effective when employed by Central Asian mounted archers. The Seljuk army continually gave way in the center and sucked the Byzantine army in, as mounted archers on the ends of the Seljuk line repeatedly struck the Byzantine flanks in hit-and-run attacks. As the day wore on and the Byzantine center was unable to force the Seljuks to engage, Romanos gave an order to return to camp, but as soon as they started turning around, the retreating Seljuk center also turned and attacked.
Alp Arslan with his foot literally on Romanos IV's throat, from Boccacio's De Casibus Virorum Illustrium (On the Fates of Famous Men) via a 15th-century illustrated French translation (Wikimedia Commons)
The idea at this point would have been for the Byzantine rearguard to punch through an attempted Seljuk envelopment and lead the rest of the army back to camp. But commanding the rearguard was a young nobleman named Andronikus Doukas, a kinsman (nephew) of Constantine X and one of the leaders of the faction that was actually opposed to Romanos being emperor at all. He spread the word among his soldiers that Romanos was dead and, disheartened, they broke formation and ran. Romanos was actually very much not dead, but in the chaos he was captured, and Alp Arslan, after securing a ransom and the surrender of Manzikert, Antioch, and a couple of other important Byzantine cities, sent Romanos back to Constantinople with an escort. Whether this was intentionally done to sow discord among the Byzantines or not is hard to say, but it worked out brilliantly for the Seljuks either way.
Here’s where the court intrigue comes into play. Even while Romanos was returning to the capital, the Doukas faction was working to have him removed as emperor. Andronikus Doukas’s father, John, who was a very high-ranking Byzantine noble and had the support of the Varangian Guard (the royal bodyguard), forced Eudokia out and became regent for the newly elevated Michael VII. Romanos cobbled together an army of Manzikert survivors and tried to regain his throne, but he was defeated and blinded in 1072, then died in exile of an infection brought on by his blinding.
Michael VII repudiated the treaty that Romanos had concluded with Alp Arslan after Manzikert, which proved to have been a huge mistake because the treaty might have (at least temporarily) preserved the heartland of Anatolia for the Byzantines. Repudiating it might have made sense if the Byzantines had the military wherewithal to force a rematch or at least to try to close their Caucasian border, but all the chaos and infighting had sapped much of what was left of the empire’s strength. So much attention was spent on the chaotic mess in Constantinople that the core of the empire was lost. By 1080, most of Anatolia belonged to one Turkic principality or another, and the Seljuk holdings there were vast enough that they became their own sultanate, the Sultanate of Rum (Rome). Constantinople was reduced to its European territories and a strip along the Anatolian coastline.
Map showing the successive Seljuk conquests in Anatolia after Manzikert
Manzikert’s effects are hard to completely assess. There’s the school that treats it as the death blow to the Byzantine Empire, which is nuts because, again, it was another 400 years before the empire completely collapsed. And while Manzikert marks a turning point in Byzantine fortunes, ending a roughly two-century period in which the empire got the better of its competition with the Abbasid Caliphate, it’s also clear that there was a lot of rot building up in the imperial center that this battle did not cause but simply exposed. In my view the impact of Manzikert on the Byzantines is not so much about causing the empire to fall, it’s that it all but ensured that when the empire finally did fall, it would be to a Turkic people. And, lo and behold, the battle did (though it took a while) open the door for Osman I to eventually put a raiding party together in the far northwestern part of Anatolia and give rise to what would become the Ottoman Empire. The much greater impact of Manzikert is that it opened Anatolia to Turkic conquest and settlement, and the modern nation of Turkey attests to how thorough that process was.
Manzikert is noteworthy for at least one other reason. The Seljuk victory and the perception that the Byzantines were suddenly in imminent danger led Constantinople to appeal for help to Rome, which then inspired Pope Urban II to call for nobles and their knights to take up the Cross and head east to save their fellow Christians from the Turks and, while they were in the neighborhood, to “liberate” Jerusalem for Christ. The First Crusade followed soon after.