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.
The United States Armed Forces are the military forces of the United States. U.S. federal law names six armed forces: the Army, Marine Corps, Navy, Air Force, Space Force, and the Coast Guard. Since 1949, all of the armed forces, except the Coast Guard, have been permanently part of the United States Department of Defense. They form six of the eight uniformed services of the United States.
May 31 is the 151st day of the year in the Gregorian calendar; 214 days remain until the end of the year.