In the spring of 1964, Major Alfred M. Gray, later the 29th Commandant of the Marine Corps, arrived in the Khe Sanh sector with a signal intelligence detachment and an infantry platoon and established a radio monitoring site atop Dong Voi Mep, better known to the Marines as Tiger Tooth Mountain, north of the CIDG camp. The composite force, designated Marine Detachment, Advisory Team l, was "the first actual Marine ground unit to conduct independent operations in the Republic of Vietnam." After its position had been compromised in July, the team redeployed to Da Nang.

1968: The Definitive Year

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