instituted a tax of one-fifth on all slaves taken in war, and from this pool of manpower the sultans first constructed the Janissary corps as a personal army loyal only to the Ottoman sultan.

From the 1380s to 1648, the Janissaries were gathered through the system of child levy enslavement, which was abolished in 1648. This recruitment of Janissary troops was achieved through the enslaving of dhimmi