What authority enables a combatant commander to perform command functions over assigned forces?

The correct answer centers on the concept of Combatant Command Authority, which grants combatant commanders the authority to exercise control over assigned military forces. This authority allows them to direct operations, organize forces, and allocate resources effectively to achieve mission objectives. It encompasses tasks ranging from strategic planning to operational execution, ensuring unity of effort across various components of the military under their command.

Combatant Command Authority is crucial for efficient decision-making and command during military operations, as it enables a commander to respond quickly and effectively to changing circumstances in the operational environment. This level of authority ensures that a combatant commander can integrate different branches of the armed forces and employ them cohesively in joint operations.

The other options provided, while related to command and control, do not carry the specific definition and scope that Combatant Command Authority does. Operational Authority may refer more broadly to the ability to manage specific operations, but does not define the overarching command structure. Combat Command Authority does not exist as a recognized term within military doctrine, and Joint Command Authority, while it pertains to unified command structures, lacks the specific legal and operational authority granted by Combatant Command Authority.