Which annex outlines the overall concept of operations and the scheme of maneuver?

The correct choice is the annex that focuses on operations, which provides a comprehensive overview of the overall concept of operations and the scheme of maneuver. This annex serves as a vital component in military planning, detailing how forces will be employed to accomplish the mission. It includes guidelines for coordinating activities among various units and aspects of the operation, ensuring that all elements work together effectively to achieve the specified objectives.

In the context of military doctrine, this annex delineates specific tasks, timelines, and resources needed, enhancing situational awareness and synchronization among units. By addressing the overall concept of operations, this annex plays a crucial role in framing the strategy and tactics that will be employed during an operation. Thus, it stands out as the primary reference for understanding how forces will maneuver and interact in a given scenario.

The other options focus on specific areas, such as intelligence, fires, or administration and support, which while important, do not encompass the strategic overview and operational maneuvering that this particular annex provides.