Marine Corps Law Enforcement (MCLE) provides commanders with a broad range of mission-enabling law enforcement capabilities to assist them in protecting garrisoned forces and maintaining good order and discipline. The program is supported by the Law Enforcement, Investigations and Corrections Branch (PSL), Installations & Logistics, Marine Corps Installations Command through; budget management, policy development, and training support.

The MCLE Program recruits, trains and equips law enforcement personnel to support installation law enforcement and security operations that include but are not limited to: Criminal Investigations, Special Response, Military Working Dog support, Traffic Control, Installation Access Control, Physical Security and Police Services.