Devshirme
The Ottoman child levy that took Christian boys from Balkan villages and turned enslavement into the surest ladder to imperial power.

The devshirme was one of history's strangest institutions: a system of enslavement that doubled as the surest ladder to power in the Ottoman Empire. Every few years, imperial agents fanned out through the Christian villages of the Balkans and took a quota of boys, usually between eight and eighteen. The children were converted to Islam, marched to the capital, and trained for the sultan's service. Their families rarely saw them again. Yet some of those boys would end up governing provinces, commanding armies, and running the empire.
How the levy worked
The practice probably began in the late 14th century and ran, at intervals, into the 17th. A decree set the number needed; recruiting officers went to chosen villages and demanded the priest's baptismal register, then picked the likeliest boys. The brightest went to the palace school to be groomed for administration; the rest were sent to Anatolian farms to learn Turkish and toughen up, then enrolled in the Janissaries, the sultan's elite standing infantry. Legally, all of them were kul, slaves of the sultan, and in practice that status was the point.
A slave elite
The genius of the system was political. A hereditary Turkish nobility could threaten the throne, but men taken as children, cut off from family and land, converted, and raised to owe everything to the sultan, could not. They had no independent base of power, only the master who had made them. This slave-elite staffed the army and the bureaucracy, and the ablest climbed astonishingly high: provincial governors, admirals, and grand viziers came out of the devshirme. The greatest of them, Sokollu Mehmed Pasha, was taken from a Bosnian village and ran the empire as grand vizier for fourteen years.
For the families, the levy was mostly anguish, a child lost to a foreign faith and a distant city. But it was not simple tragedy. Some families, sensing where the road might lead, are recorded trying to get their sons taken, and Muslim families, formally barred, sometimes bribed officials to smuggle boys in. A career at the summit of the empire was worth the gamble.
Decline and paradox
The system decayed from within. As Janissaries won the right to marry and enroll their own sons, the corps filled with hereditary members who had never been levied, swelling in number and sinking in discipline. The devshirme faded through the 17th century, and the Janissaries curdled into a corrupt, rebellious praetorian guard until Mahmud II destroyed them by cannon fire in 1826. The paradox outlived the institution: for two centuries, the shortest path to power in one of the world's great empires ran through a wall in a Balkan village, where a mother watched an Ottoman officer write down her son's name.