The U.S. military has a large law enforcement infrastructure which includes both civilian and military police, as well as special investigators. These careers offer opportunities and challenges that careers in the civilian sector simply don't. If you're looking for a unique and demanding career in criminal justice, you definitely want to check out these military law enforcement career profiles.
Besides serving functions similar to their civilian counterparts, though, military police also must be ready for battle. They are subject to deployment anywhere their respective branch is present. While deployed, military police provide base, camp and battlefield security, assist with dignitary protection details and help train host-nation police forces. They also serve as corrections officers and are responsible for guarding convicted military personnel, foreign detainees and prisoners of war.
The job of a DoD police officer is very much like that of a civilian police officer in any local or state government. Officers perform patrol functions, investigative minor crimes and traffic crashes, make arrests and enforce traffic laws on base. DoD police jurisdiction is limited to the base they are serving on, though mutual aid agreements may be entered into with local agencies allowing defense police officers to enforce laws off base when necessary.
NCIS special agents are responsible for investigating major crimes committed by or against civilian and military members of the United States Navy as well as the U.S. Marine Corps, which falls under the Department of the Navy. Crimes investigated range from robbery and fraud to murder. NCIS agents also conduct counter-terrorism and intelligence operations and work to help protect U.S. Navy interests around the world.
AFOSI special agents investigate major crimes involving Air Force personnel, as well as financial crimes and instances of fraud. They also provide support for military forces and identify threats to Air Force interests and national security.
CID special agents investigate crimes committed by or against Army personnel or in which the Army has a direct interest. They also assist local and state law enforcement officials in the conduct of off-base investigations or those that may involve Army personnel outside of the normal jurisdiction of the Army. CID investigators also consult and train host-nation police forces and provide security and dignitary protection for high-ranking military and civilian officials.