By 1014 the war between Basil II of Byzantium and Tsar Samuel of Bulgaria was a generation old. Samuel had built a Balkan empire from the wreck of the first Bulgarian state and humiliated the young Basil at Trajan’s Gate in 986; Basil, hardened by that defeat and by civil wars, had spent two decades grinding back, campaign by methodical campaign.
In the summer of 1014 Samuel blocked the Kleidion pass — a defile of the Belasitsa mountains on the Strumitsa river route — with a timber palisade wall and the main Bulgarian army. Frontal assaults failed until the general Nikephoros Xiphias led a force over a mountain track and fell on the Bulgarian rear on 29 July 1014. The army was destroyed as a fighting force; Samuel escaped only because his son gave him a horse. Byzantine tradition put the prisoners at some 14,000-15,000 men.
The blinding
What followed is one of the most notorious acts attributed to any Byzantine emperor. Basil, the story runs, had the prisoners blinded — all but one man in each hundred, who was left a single eye to lead his ninety-nine sightless companions on the long march home. When the ruined columns groped their way to Samuel at Prespa in early October, the old tsar collapsed at the sight — a stroke, in modern reading — and died two days later, on 6 October 1014.
Historians treat the tale with care. The fullest accounts are later; the numbers are suspiciously round and likely far too high; and blinding — the standard Byzantine penalty for rebels rather than foreign enemies — may reflect Basil’s legal claim that Bulgaria was imperial territory in revolt. Something brutal along these lines is generally accepted; its arithmetic is not. Even the emperor’s grim epithet, Boulgaroktonos — “the Bulgar-Slayer” — is first attested generations after his death, sharpened for later propaganda wars.
The end of the war
Kleidion did not end Bulgaria at a stroke — the war ground on four more years — but it broke the state’s spine. By 1018 the last resistance had capitulated, and Bulgaria was annexed outright: the first time the whole Balkan peninsula had answered to Constantinople in four centuries. Basil, characteristically, governed the conquest with pragmatic mildness — taxes payable in kind, the Bulgarian church left autonomous under its own archbishop.
Basil died in 1025, celibate, obsessive, and undefeated, having willed his bones to a suburban soldiers’ church rather than the imperial mausoleum. Within fifty years his successors had squandered the empire he built — and in the Balkans, a millennium later, the one-eyed columns of Kleidion remain live national memory, invoked in speeches, textbooks, and football chants on both sides of the border.