DIWAN-I-ARZ department was set up to look after the military organization of the Delhi Sultanate.
It was headed by Ariz-i-Mumalik.
He was responsible for the administration of military affairs.
He maintained royal contingent, recruited the soldiers, ensured the discipline and fitness of the army, inspected the troops maintained by the Iqta-holders, examined the horses and branded them with the royal insignia.
Alauddin Khalji introduced the system of Dagh (branding) and huliya (description) and cash payment to the soldiers in order to strengthen his control over the army.
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