Uniform Code of Military Justice
The Uniform Code of Military Justice (UCMJ) is the foundation of the system of military justice of the armed forces of the United States. The UCMJ was established by the United States Congress in accordance with their constitutional authority, per Article I Section 8 of the U.S. Constitution, which provides that "The Congress shall have Power . . . to make Rules for the Government and Regulation of the land and naval forces" of the United States.