What instruction establishes the Standing Rules of Engagement (SROEs)?

The Standing Rules of Engagement (SROEs) are established by the document CJCSI 3121.01(Series). This instruction provides comprehensive guidelines for the use of force and engagement rules applicable to all U.S. military forces, ensuring a consistent application of rules integrated with national and international laws. The SROEs facilitate commanders in making informed decisions when engaging potential threats while balancing mission objectives and legal considerations.

Other available options, while related to military operations and doctrine, do not specifically outline the SROEs. For instance, JP 5-0 focuses on joint planning, providing a broader overview of the planning process rather than the particular engagement rules. NWP 5-01 deals with naval warfare doctrines and processes, and NTTP 3-20.6.29M addresses specific tactics and procedures for naval operations. Therefore, CJCSI 3121.01(Series) stands out as the explicit instruction that governs the engagement parameters for military forces, making it the correct answer.