Which of the following is NOT one of the unified Combatant Commands?

The correct response identifies that USARMYCOM is not one of the unified Combatant Commands. The unified Combatant Commands represent joint commands composed of forces from two or more services, and they are established to conduct operations in specific geographical areas or for specific functional purposes.

USCENTCOM, USSOCOM, and USPACOM are all recognized unified Combatant Commands:

• USCENTCOM (United States Central Command) oversees military operations in the Middle East and parts of South Asia.

• USSOCOM (United States Special Operations Command) is responsible for special operations forces from all service branches and their integration into combat operations.

• USPACOM (United States Pacific Command), now known as USINDOPACOM, is responsible for U.S. military operations in the Indo-Pacific region.

In contrast, USARMYCOM is not designated as a unified Combatant Command. This name doesn't correspond to any official geographic or functional command structure, as it implies a singular service command rather than a joint multi-service command.