United States naval district

Regions and Districts of the U.S. Navy and U.S. Coast Guard Map of 17 Naval Districts 1944 The United States Naval Districts is a system created by the United States Navy to organize military facilities, numbered sequentially by geographic region, for the operational and administrative control of naval bases and shore commands in the United States and around the world. Established in 1903, naval districts became the foundational system for organizing U.S. naval forces ashore during the 20th century. The term "Naval" forces includes United States Marine Corps and current United States Coast Guard units. About half of nearly 20 numbered naval districts, after decades of service as successful naval operational support commands, were merged or disestablished by the U.S. Navy between 1970 and 1998. By 1999 the remaining U.S. naval districts were reorganized and renamed as Navy Regions, except for Naval District Washington DC. The revised U.S. Navy organization of 11 geographic regions is now administered under Commander, Naval Installations Command (CNIC) in Washington DC. United States Marine Corps naval infantry forces operating with the USN are supported by the naval district system.