Within weeks the sabats allow Akbar's men to gain control of territories just underneath the steep slope of Ranthambore Fort. The Mughals built prefabricated walls to protect their gains around the fort and then placed highly accurate narrow barreled long-cannons that were about 20–25 ft in length.[4] The long-cannons and Volley guns that were effectively utilized during the siege were known to have been designed by the prestigious inventor Fathullah Shirazi.