Which of the following is a primary source used to develop strategic military plans?

The primary source used to develop strategic military plans is Campaign Planning Guidance. This document plays a critical role in outlining the approach to planning and directing military campaigns. It provides the framework and objectives necessary for operational planners to effectively align their resources and actions with overarching strategic goals. The guidance encompasses various elements such as force generation, operational readiness, and engagement strategies, ensuring that planners have a coherent path forward in achieving mission success.

Campaign Planning Guidance differs from other documents in that it specifically addresses the strategic applications of military power and serves as a comprehensive foundation for planning campaigns rather than focusing solely on tactical execution or specific operational parameters. By utilizing this source, military leaders can ensure that their plans are aligned with broader national and alliance objectives, making it pivotal in the strategic planning process.