[1]: 246 In late July the Army of the Republic of Vietnam (ARVN) II Corps received intelligence that the People's Army of Vietnam (PAVN) 1st Regiment was regrouping in Base Area 121, 20 km west of Quảng Ngãi and would soon be joined by the 21st Regiment in preparation for an attack on Quảng Ngai before the Presidential election on 3 September.

[1] The new Task Force Oregon commander, MGen Richard T. Knowles planned for the 2nd Battalion, 327th Infantry Regiment and the 2nd Battalion, 502nd Infantry Regiment to be deployed by helicopter to the west of Base Area 121, the South Korean 2nd Marine Brigade would move in from the north and two ARVN Ranger Battalions would move in from the south backed up by an ARVN Airborne Battalion operating from the Minh Long Special Force Camp.

[1] The operation commenced on 2 August with the forces reaching their initial objectives by nightfall.

The operation was a disappointment and it was speculated that the PAVN had been tipped off by spies within the ARVN staff or that the original intelligence was misinformation.

[1]: 248 This article incorporates public domain material from websites or documents of the United States Army Center of Military History.