What supports commanders and staffs in their application of operational art with tools and methodology?

Operational Design is the correct answer because it serves as a framework that assists commanders and their staffs in applying operational art effectively. This approach helps in visualizing and understanding the operational environment, allowing for the development of coherent strategies to achieve desired end states.

Operational Design integrates various aspects of military planning and enables the alignment of resources, capabilities, and actions with higher-level objectives. It provides the necessary methodology and tools for assessing situations, identifying critical factors, and articulating an operational approach, allowing for more informed decision-making and adaptability in complex scenarios.

In contrast, while Campaign Planning focuses on the organization and execution of military campaigns over a set period, it does not inherently provide the overarching tools for operational art. Joint Operations Command refers to the command structure for joint military operations, but it does not directly address the conceptual frameworks necessary for applying operational design. Military Doctrine encompasses the fundamental principles guiding military forces in their conduct but does not specifically detail the methodologies that facilitate operational art.