Due to changes in the United States military, through phases of base realignment and closure, civilian law enforcement agencies have fewer local military points of contact for information and guidance. This article presents a compilation of basic information and a contact list for the military services to assist law enforcement in communicating with the military. Information was compiled by the International Association of Chiefs of Police Civil Law Enforcement/Military Cooperation Committee. The article begins with the identifying of service personnel (i.e., armed services, coast guard, reserve and national guard), as well as identification documents. The article concludes with a discussion of the Uniform Code of Military Justice (UCMJ) which governs the conduct of service members. The effect on local law enforcement is that there are situations when a service member commits an offense or crime and it is clearly either a UCMJ matter or a civilian matter.