and Rear Adm.
Scott Van Buskirk, commander of Carrier Strike Group 9, speak with Chief of Army Staff Gen.
Ashfaq Kayani and Maj. Gen.
Ahmad Shuja Pasha, director general of military operations, on the flight deck of the aircraft carrier
USS Abraham Lincoln (CVN-72) while under way in the northern part of the
Arabian Sea on Aug. 27, 2008. The
Chief of the Army Staff (COAS), formerly called the
Commander-in-Chief (C-in-C of the Pakistan Army), is challenged with the responsibility of commanding the Pakistan Army. The COAS operates from army headquarters in
Rawalpindi, near
Islamabad. The Principal Staff Officers (PSO's) assisting him in his duties at the
lieutenant general level include: The Military Operations and Intelligence Directorates function under the
Chief of General Staff (CGS). A major reorganization in GHQ was done in September 2008 under General
Ashfaq Parvez Kayani, when two new PSO positions were introduced: the Inspector General Arms and the Inspector General Communications and IT, thus raising the number of PSO's to eight. The headquarters function also includes the Judge Advocate General (JAG), and the Controller of Civilian Personnel, the Chief of the Corps of Engineers (E-in-C) who is also head of
Military Engineering Service (
MES), all of them also report to the Chief of the Army Staff. ==Operational structure==