Note: This special unit requires the Cradle of Civilization DLC. You also need to retain your “Ottoman Government” reform. You’ll lose that if you convert to a non-Muslim religion or become revolutionary. To recruit a janissary regiment, just follow these steps: Recruitment is instantaneous and doesn’t require manpower or money. It only costs 10 military mana.
Janissary Limit & Heathens
The number of janissaries you can recruit is based on all of your heathen provinces’ development relative to your national total. Having heathens normally lowers your religious unity. The “Guaranteed Dhimmi Autonomy” estate privilege removes this penalty.
Avoid Having Too Many Janissaries
If janissaries comprise more than 20% of your entire army, you’ll be at risk of triggering the “Janissary Coup” disaster. It can occur starting in the Age of Reformation. Should the disaster’s progress bar appear, you can easily prevent it with either of these methods:
Disbanding your janissaries until you have less than 5% of them in your army Reaching +3 stability