Which support relationship requires a force to support another specific force and respond directly to their requests?

The relationship described in the question refers to a situation where one force is designated to provide support to another specific force and must prioritize that force's requests. This is known as direct support. In a direct support relationship, the supporting unit is tasked primarily with fulfilling the needs of the supported unit, ensuring that it is responsive and can rapidly adapt to the operational requirements articulated by that specific unit. This type of support ensures that the needs of the supported force are met promptly and effectively, highlighting the importance of coordination and communication between the two forces involved.

In contrast, other support relationships such as general support involve broader responsibilities that do not prioritize one specific unit’s requests over others, while operational support is a more flexible arrangement that does not necessarily imply immediate response to requests from a specific force. Reinforcing support typically involves augmenting the capabilities of another unit but does not imply the direct and immediate responsiveness that characterizes a direct support relationship.