Devshirme Child-Levying System

Timeline

1. c. 1380–1389Edirne · ThraceMurad I regularized the irregular seizure of boys into periodic conscription; after Islamic education the levied boys were enrolled in the Janissaries or entered palace schools, becoming the sultan's direct manpower pool.
2. c. 1389–1395Thrace and Macedonia · Ottoman EmpireAfter his victory at Kosovo, Bayezid I consolidated rule over the Balkans; the devshirme selection area expanded with newly conquered territories, supplying more manpower to the steadily expanding standing army and administrative system.