Q. Who was the first sultan of Delhi sultanate who paid his soldiers fully in cash?
Answer: Alauddin Khilji
Notes: Alauddin Khilji introduced the branding system (dagh) of the horses so that the soldiers may not bring horses of poor quality to the muster. He was also the first sultan who paid his soldiers fully in cash. A descriptive roll of each soldiers was also maintained. The army was posted to different parts of country.