The Chief of the General Staff, the ranking officer in uniform within the ANA, supervises the ANA General Staff as well as commands the operational Army. In essence, he fulfills the role of the Chief of Staff of the U.S. Army along with the role of a U.S. Combatant Commander, employing the forces in combat. The role of the advisor to the Chief of the General staff is to develop the capacity of this key official to grow, improve, and sustain his organization during this complex and challenging time. He serves as a strategic advisor on issues of concern to the coalition as well as the ANA, acts as a liaison officer between the CoGS and the various major commands of ISAF, and assists the CoGS in performing his duties by providing feedback and insights into challenges within ANA systems and policies.