Which document establishes the guidelines for the use of OCS in military operations?

The Defense Acquisition Guidebook is the correct document that establishes guidelines for the use of Operational Contract Support (OCS) in military operations. It serves as a comprehensive resource for those involved in acquisition and contracting processes within the Department of Defense, providing essential guidance on how to integrate OCS into military planning and operations effectively. This guidebook emphasizes the importance of aligning contracting activities with operational requirements and strategic objectives, ensuring that all acquisition processes support mission success.

In contrast, while other options may provide valuable information related to military operations or acquisition, they do not specifically focus on the operational integration of contracting support. Joint Publication 5-0, for example, deals more with joint operational planning rather than the specifics of contracting support. The Federal Acquisition Regulation, while it governs federal procurement processes, does not directly provide the operational context needed for military operations. The National Defense Strategy outlines broader strategic objectives and priorities for national defense but does not dive into the specific guidance for the use of OCS.