Which publication contains the military rules of evidence?

The correct choice is the Manual for Courts-Martial (MCM), which specifically includes the military rules of evidence. The MCM serves as the primary source of the uniform rules governing the conduct of courts-martial in the U.S. military. This manual outlines the procedures for courts-martial, the rights of service members, and the applicable rules of evidence, which guide how evidence may be introduced and considered during court-martial proceedings.

Understanding the context of the other options can clarify why the MCM stands out as the correct choice. The Military Justice Manual primarily provides guidance on the military justice process but does not comprehensively detail the rules of evidence. The Department of Defense Directive addresses broader policies and responsibilities within the Department of Defense, lacking the specific legal details about evidence in military proceedings. The Guide to Military Procedures may offer general procedural guidance but does not encompass the specialized rules of evidence found in court-martial settings. The Manual for Courts-Martial is thus the definitive resource for military legal proceedings and their evidentiary standards.