What is the role of the Chairman of the Joint Chiefs of Staff?

The role of the Chairman of the Joint Chiefs of Staff primarily revolves around advising the President and other senior leaders on military matters. This position is critical in shaping national defense strategy and policy, coordinating the efforts of the armed forces, and providing strategic guidance. Although the Chairman has significant influence, they do not have direct command authority over the military branches; that command remains with the individual service Chiefs. The Chairman’s expertise and insights are vital for informed decision-making regarding military engagement, resource allocation, and overall defense strategy.

The other options refer to responsibilities that do not fall within the scope of the Chairman's position. For instance, overseeing military operations and directing the National Guard are functionally appropriate for operational commanders and state officials, respectively. Commanding all armed forces is also outside the Chairman’s purview, as each branch maintains its own command structure separate from the Joint Chiefs of Staff. This clarification highlights the unique advisory function that the Chairman serves in the context of U.S. military leadership.