Which document outlines guidelines for U.S. military operations in fixed environments?

The National Security Strategy (NSS) is a key document that outlines the overarching strategic framework for U.S. military operations and national security objectives. It provides guidelines for how the nation approaches security and military operations, particularly in fixed environments where the U.S. may need to establish a presence or conduct operations over an extended period of time. The NSS identifies the broader context within which the military operates, including the importance of stability, readiness, and the alignment of military operations with national interests.

This document is also critical because it encompasses the principles and priorities that inform subsequent military planning and strategies, ensuring that operations are cohesive and aligned with national goals. By focusing on fixed environments, the NSS addresses how the military should prepare for and engage in operations that may require a sustained commitment to secure or stabilize a region, emphasizing the necessity of integrating military and diplomatic efforts.

The other documents mentioned, while relevant to military operations, serve different purposes. The Defense Strategy Document focuses specifically on defense policy, the Joint Strategic Plan encompasses broader military strategic planning, and the Operational Doctrine Manual provides specific tactics and operational guidance rather than overarching strategic frameworks.