The Uniform Code of Military Justice (UCMJ) is a federal law that establishes the legal framework for the military justice system in the United States. It applies to all members of the U.S. Armed Forces, including active duty, reserve, and National Guard personnel. The UCMJ outlines various offenses, procedures for courts-martial, and the rights of service members. The UCMJ is designed to maintain discipline and order within the military while ensuring fair treatment for those accused of offenses. It includes provisions for both minor infractions and serious crimes, providing a structured process for investigation, prosecution, and appeals.