Khan joined the United Nations as an expert on Afghanistan and South East Asia. As a major, Khan has served as a company commander/term commander and as a 2IC in his parent unit 35 Self-Propelled Heavy Artillery Regiment. He has also served as General Staff Officer-2 (GSO-2) in 14th Infantry Division. He graduated from the Command and Staff College as a major and received his bachelor's degree. As a lieutenant colonel, Khan has served as General Staff Officer-1 (GSO-1) at the Rangers Headquarters in Sindh and General Staff Officer-1 (GSO-1) at the headquarters of the XXX Corps. He also graduated from the National Defense University as a lieutenant cololonel and received his master's degree in war studies.
