Which of the following is a limitation of SOF?

The aspect of requiring proper employment highlights a crucial limitation of Special Operations Forces (SOF). While SOF bring unique skills and capabilities to various mission types, their effectiveness is heavily reliant on how they are employed in the operational environment. This means that commanders must not only understand the strengths of SOF but also how to integrate them into larger operational plans effectively. Proper employment includes considerations of their unique tactics, techniques, and procedures, which differ significantly from conventional forces. When not employed correctly, SOF may not achieve their desired strategic effects, potentially leading to mission failure or unintended consequences.

The other options present characteristics that do not align with the limitations of SOF. Serving as a conventional substitute suggests a misunderstanding of SOF's role, as they are designed to complement rather than replace conventional forces. The idea of unlimited assets inaccurately represents the finite resources available to SOF, which must be prioritized based on mission requirements. Lastly, while SOF do have substantial organic support, it does not translate into a limitation; rather, it speaks to their capability to operate effectively within various contexts.