Which Army Regulation (AR) covers military justice?

The correct choice is AR 27-10, which is the Army Regulation dedicated to military justice. This regulation outlines the procedures for the administration of justice within the Army, including the UCMJ (Uniform Code of Military Justice), the rights afforded to service members, and the disciplinary actions that can be taken in response to violations of military law.

Understanding military justice is crucial for maintaining discipline and order within the ranks, ensuring that all soldiers are aware of their rights and responsibilities under military law. Additionally, AR 27-10 provides guidance on the various types of courts-martial, the administrative actions that may be taken, and the roles of officers involved in the military justice process.

While the other regulations mentioned serve important roles within the Army, they do not specifically pertain to military justice. For example, AR 15-6 deals with investigations, AR 670-1 covers the wear and appearance of the Army uniform, and AR 600-20 focuses on Army command policy, including equal opportunity and command climate.