A joint force that is constituted and designated by the Secretary of Defense is referred to as a "Joint Task Force" (JTF). This command structure is established to accomplish a specific mission, typically of limited duration, and can be led by a combatant commander or a subordinate unified commander. The JTF is designed to integrate and coordinate the efforts of multiple service branches and agencies to achieve operational objectives effectively.
A joint force constituted and designated by the Secretary of Defense (SECDEF) may refer to a unified combatant command, such as U.S. Central Command (CENTCOM) or U.S. European Command (EUCOM). These commands are responsible for conducting military operations in specific geographic regions and consist of personnel from multiple branches of the military working together.
Combatant Command
the Secretaries of the Military Departments and then to the Service Chiefs
Secretary of defense and the president
the Combatant Commanders
military departments
to complete tasks assigned to the combatant commanders by the president or secretary of defense
Operational control
The Joint Chiefs of Staff (JCS) do not have executive authority to command combatant forces; rather, they serve as advisory bodies to the President and the Secretary of Defense. The JCS provides guidance on military strategy and readiness, but actual command of combatant forces lies with the combatant commanders, who operate under the authority of the President and the Secretary of Defense. The JCS's role is to ensure effective military operations and coordination among the various branches of the armed forces.
Combatant Command
National Strategic
combatant commander, subordinate unified commander, and joint task force commander