Under the Joint Chiefs of Staff, who is the chief representative of each service?

• A. Chairman of the JCS
• B. The Service Secretaries
• C. Military Service Chiefs
• D. Unified Combatant Commanders

Answer: (C)

On the Joint Chiefs of Staff, each military service is represented by its Service Chief—the senior uniformed officer who heads that service and serves as its principal military advisor. These Service Chiefs act as the official voice for their branch within the JCS, bringing the specific needs and perspectives of their service to discussions and guidance. The Chairman of the Joint Chiefs chairs the group and is usually one of the Service Chiefs, but the role is to lead and coordinate the JCS, not to be the sole representative of a single service. Civilian Service Secretaries lead the departments administratively, not as the military representatives on the JCS, and Unified Combatant Commanders run the regional commands rather than representing a service on the JCS. So the best answer is the Military Service Chiefs.