What must be clearly defined to facilitate coordination in fire support?

Effective coordination in fire support relies heavily on solid communication plans. The reason this choice is correct lies in the complexities involved in military operations, where different units, roles, and responsibilities must be synchronized to achieve common objectives. A well-defined communication plan ensures that all personnel involved are aware of the protocols for sharing information, issuing commands, and relaying changes or updates. This clarity is essential to prevent misunderstandings, reduce response times, and ensure that all elements can work together seamlessly during crucial moments.

For operational success, the ability to communicate effectively can mean the difference between mission accomplishment and failure. While other factors such as strategic goals, resource availability, and personnel roles are undoubtedly important, without a robust communication plan, coordinating fire support effectively would be severely hampered.