Lieutenant General Rahat Naseem Ahmed Khan, Hilal-e-Imtiaz (Military) was commissioned in a Mechanized Infantry Battalion on 6 September 1990. He is a graduate of Command and Staff College Quetta, College Interarmees de Defense, France and National Defence University, Islamabad.

His varied Command, Staff and Instructional assignments includes Brigade Major of an Independent Infantry Brigade Group, Deputy Secretary to Vice Chief of Army Staff, Commanding Officer of Mechanized Infantry Battalion, Brigade Commander of Infantry Brigade, Chief of Staff of a Strike Corps, General Officer Commanding of Infantry Division and Inspector General Frontier Corps Khyber Pakhtunkhwa (North). The General Officer also served in Force Command Northern Areas (Indus Sector) and United Nations Mission Bosnia.

On the Instructional side, he remained on the faculties of Pakistan Military Academy Kakul, School of Armour & Mechanized Warfare Nowshera, Command & Staff College, Quetta and National Defence University, Islamabad.

The General Officer assumed the appointment of President National Defence University on 3 May 2023.