Military Criminal Investigative Organization (MCIO)

The Military Criminal Investigative Organization (MCIO) refers to specialized units within the U.S. military responsible for investigating criminal activities involving military personnel. Each branch has its own MCIO—such as the Army’s Criminal Investigation Division (CID), the Navy’s Naval Criminal Investigative Service (NCIS), and the Air Force’s Office of Special Investigations (OSI). These organizations handle serious crimes, ranging from theft to sexual assault, ensuring that military laws and regulations are upheld. Their investigations maintain discipline within the armed forces and can lead to legal action against those involved in criminal conduct.