Which statement describes the SecDef's role in relation to the chain of command?

• A. The Secretary of Defense exercises the operational chain of command between the President and the Combatant Commanders.
• B. The Combatant Commanders report directly to Congress.
• C. The Joint Chiefs of Staff controls all chain of command.
• D. The Secretary of Defense has no chain of command role.

Answer: (A)

Think of civilian oversight and how military orders flow. The President, as Commander in Chief, has the top authority, but the Secretary of Defense sits directly below and directs and controls forces within the Department of Defense. The operational chain of command runs from the President to the Secretary of Defense and then down to the Combatant Commanders, who carry out the President’s and DoD’s approved missions. The Joint Chiefs of Staff are senior advisers and do not themselves control the chain of command. Combatant Commanders report through the Secretary of Defense, not directly to Congress. So describing the SecDef as exercising the operational chain of command between the President and the Combatant Commanders correctly reflects how military authority and civilian leadership are structured.