Which command is an example of a sub-unified command?

A sub-unified command is a command that is subordinate to a larger unified command and is responsible for a specific geographic area or operational capability. In this context, U.S. Forces Korea serves as a sub-unified command under U.S. Indo-Pacific Command. It is tasked with overseeing all military operations and readiness in the Korean Peninsula and has a focused mission aligned with the strategic objectives of the larger unified command.

In contrast, U.S. Central Command functions as a unified command that oversees operations across the Middle East and Central Asia. NATO Allied Command, while integral to NATO operations, does not fit the U.S. military command structure as a sub-unified command; it represents an alliance rather than a specific regional focus under U.S. command. U.S. Northern Command is another example of a unified command, responsible for homeland defense and Security operations in North America.

Thus, the designation of U.S. Forces Korea as a sub-unified command stands out as it exemplifies the operational structure that includes regional commands subordinate to larger unified commands.