The base was first established in 1965 by the 1st Cavalry Division for the Battle of Ia Drang, just south of QL-19 and approximately 24 km southwest of Pleiku.

[1] The base was originally named after SSGT Arlen Tuttle, an Engineer from the 8th Engineer Battalion, 1st Cavalry Division who was killed in action on 5 November 1965.

[2] The base was reopened in May 1966 by Task Force Walker of the 25th Infantry Division.

[3] On 30 October 1970 the base, occupied by 6th Battalion, 14th Artillery and elements of B Battery, 4th Battalion, 60th Artillery, was attacked by the PAVN, resulting in 3 U.S. deaths and 20 U.S.

[4] Other units stationed at Oasis included: The base was abandoned by U.S. forces in late 1971.