The History of ANGLICO dates back to the formation of JASCO (Joint Assault Signals Company) units who fought in the Pacific theater of World War II. At the time, the JASCO units were used to coordinate air, artillery and naval gunfire support between the Marines, Army and US Navy during the Pacific "island hopping" campaign. The most famous JASCO Unit is the 594th, for its actions during the Battle of Okinawa (1945) and the Philippines campaign (1944–45). Following the reorganization of the US Armed Forces under the Department of Defense in 1947, the JASCO units were disbanded and their responsibility transferred to the US Navy. In 1949, the Marine Corps began the process of recreating the JASCO capability under the new ANGLICO designation. ANGLICO, 2nd Signals Battalion, 2nd Marine Division, was formed in December, 1949 at Camp Lejeune, North Carolina.
The original ANGLICOs, created in both 1st Marine Division and 2nd Marine Division in December, 1949, continued to exist and serve in combat throughout 1950 and 1951 in the Korean War. These were the first ANGLICO units to stand up and serve in combat. Teams from these units served in combat attached to USMC battalions, Korean Marine battalions, and US Army units. These ANGLICOs were entirely separate from the numbered ANGLICOs which first stood up in Hawaii in 1951, and predate those units by over a year.
During the mid-to-late 1980s, under Lieutenant Colonel J.M. Wills and Lieutenant General A.M. Gray (later Commandant of the Marine Corps) 2nd ANGLICO went through a period of refocusing on core skills including regular live naval gunfire training with the USS Iowa (BB-61) battleship, and more frequent mass tactical exercises with the Army's 82nd Airborne Division. Additionally, the 2d ANGLICO began to train in Low Intensity Conflict response with weapon systems such as the Air Force AC-130 Spectre, Special Patrol Insertion/Extraction and Fast Rope insertion methods.
In 1999, all active-duty ANGLICO units (1st and 2d ANGLICO) were deactivated, their responsibilities transferred to less-effective Marine Liaison Elements. The two reserve units, 3d and 4th ANGLICO, were the only ANGLICO units that remained (and to this day are the only two to retain their jump mission and status as "Goldwingers"). In 2003, amidst the US war in Iraq and Global War on Terror and a high operational tempo being demanded of the reserve ANGLICO units, 1st and 2d ANGLICO were reactivated (although their status as jump units has never returned). Shortly thereafter, in 2004, 5th ANGLICO was formed.