What does military doctrine encompass?

Military doctrine encompasses fundamental beliefs about the nature of war, emphasizing how military forces are organized, trained, and employed in combat. It includes the principles and philosophies that guide military operations, shaping the understanding of warfare itself. Doctrine reflects the collective wisdom and experience of practitioners and theorists over time, providing a framework for the conduct of military missions.

This option accurately captures the essence of military doctrine, which serves as a foundation for decision-making and operational planning in various contexts. The other choices, while related to military operations, do not encapsulate doctrine's core purpose. Technological advancements focus on tools and methods of warfare but do not represent the foundational beliefs. Strategic alliances relate more to geopolitical relationships than to the principles governing military actions. Manuals for logistics and support are important for operational execution but do not embody the broader conceptual framework that doctrine provides. Thus, the correct answer aligns with the comprehensive understanding of military doctrine.