In 1176 Manuel I Komnenos marched on Konya and was ambushed in a pass at Myriokephalon, ending the last serious Byzantine attempt to recover Anatolia.
Manuel I Komnenos spent thirty years making the Byzantine Empire look like a great power again — in Italy, in Hungary, in Antioch, in the Balkans — and in 1176 he moved on the thing that would have made it one: the recovery of Anatolia.
He marched for Konya, the Seljuk capital, with a large army and a siege train. In a pass at Myriokephalon the sultan Kilij Arslan II caught the column stretched out along the road and destroyed a substantial part of it.
Manuel got out, having agreed to demolish two frontier fortresses. He never tried again, and neither did anyone else. The Anatolian plateau, lost after Manzikert a century earlier, was now lost permanently.
The Komnenian recovery is real and is easy to underrate. Alexios I, John II and Manuel I between them had restored the coasts of Anatolia, rebuilt the army, and made the empire the most formidable state in the eastern Mediterranean again.
What none of them had done was retake the interior. The plateau was Turkish, and Konya was a capital. Manuel had spent years managing Kilij Arslan II diplomatically — including entertaining him in Constantinople for weeks in 1162 — while the sultan absorbed the Danishmendids and became the single Turkish power in Anatolia rather than one of several.
By 1176 Manuel had concluded that the diplomacy had failed, which it had, and that the answer was a campaign against Konya itself. The army he assembled was large, encumbered by siege equipment, and included Hungarian and Serbian contingents and a force from Antioch.
Kilij Arslan sent envoys as the Byzantines advanced, offering terms. Manuel refused them. Every account — Byzantine and Turkish, hostile and sympathetic — treats this as the mistake that decided the campaign, and Manuel's own officers are described as advising him to accept.
The refusal made sense on paper. The sultan was offering to concede what a victory would take anyway, and Manuel had the larger army and had come a long way to use it.
What he had not weighed properly was the route. The road to Konya passed through defiles in which a long column with a siege train could not deploy, and the Turks had every reason to know that better than he did.
The Byzantine army entered the pass at Myriokephalon in September 1176 in a column strung out over a considerable distance, with the divisions marching separately and the baggage and siege train in the middle.
The Turks held the heights on both sides and attacked the column where it could not turn to face them. The rearward divisions were cut up badly, the siege train was lost, and Niketas Choniates — the fullest source, writing later and no admirer of Manuel — describes the emperor considering abandoning the army and being shamed out of it.
The front of the column got clear of the defile and the army was not annihilated. That distinction matters militarily and mattered very little strategically, which is the paradox of this battle.
Kilij Arslan offered terms a second time and Manuel took them: withdrawal in exchange for demolishing the frontier fortresses at Dorylaeum and Sublaeum.
Letting the emperor go was a deliberate choice by a sultan who had just beaten him, and a shrewd one. A dead Manuel meant an unknown successor and a war of revenge; a live and humiliated Manuel was a neighbour who would not come back.
He did not come back. Manuel demolished one fortress and reneged on the other, fought no further campaign in the interior, and died four years later. His empire outlived him by twenty-four years before the Fourth Crusade finished it.
Manuel himself supplied the comparison that has stuck. In a letter to Henry II of England he likened the defeat to Manzikert, which is the empire's own verdict on it and the reason this archive treats the two as a pair.
The comparison is not exact and the ways it fails are instructive. Manzikert cost an emperor his freedom and a battle; Myriokephalon cost neither. But Manzikert was followed by civil wars that lost Anatolia, whereas Myriokephalon was followed by nothing at all — which is precisely the point. After 1176 no Byzantine ruler seriously attempted to reconquer the plateau, and the Turkish presence in Anatolia stopped being a problem to be solved and became a permanent fact.
What grew on that plateau over the following century was the sultanate, then the beyliks, and then the smallest of the beyliks, whose first field victory over a Byzantine army came at Bapheus in 1302.