In the described framework, what is the Service chain of command?

• A. Primary chain of command
• B. Operational chain of command
• C. Administrative chain of command
• D. Service chain of command

Answer: (D)

In this framework, the Service chain of command is the internal authority path that moves from the highest civilian oversight through the service’s civilian leader and its top military officer down to the units for service-specific matters. It runs from the President to the Secretary of Defense, then to the Service Secretary (for the Navy, this is Secretary of the Navy; for the Marine Corps, effectively the same civilian head for the service), then to the Service Chief (Commandant of the Marine Corps in this case), and onward to the forces for administration, discipline, training, and readiness within the service. This is distinct from the operational chain of command, which handles actual combat and mission execution through combatant commanders, and from other administrative pathways.