A Joint Force is composed of two or more military services that operate under a single what?

A Joint Force is organized under the leadership of a Joint Force Commander (JFC), who is responsible for planning and executing operations involving multiple military services. The JFC ensures that the various branches—such as the Army, Navy, Air Force, and Marines—work together effectively towards a common mission. This structure allows for a unified command approach, facilitating better coordination and synergy among the different services.

The other options do not apply in the context of a Joint Force structure. For instance, a Commander-in-Chief typically refers to the President of the United States, who has broad command authority over all military services but does not specifically represent the day-to-day operational command of a Joint Force. Similarly, a Military General may lead units within a single service branch, but does not command joint operations. A Service Chief heads an individual branch of the military and focuses on matters pertaining to that specific service rather than joint operations. Therefore, the correct choice highlighting the leadership structure of a Joint Force is indeed the Joint Force Commander (JFC).