Its main objective was to cut off lines of communication and supply to the People's Army of Vietnam (PAVN) 24th and 66th Infantry Regiments as well as preventing them from retreating into Cambodia.

Aerial reconnaissance of firebases west of Polei Kleng Camp revealed heavy vehicle traffic and construction of roads deep into the Chu-Mom-Ray mountains and from the Cambodian border into the eastern Plei Trap valley.

The confirmation of artillery and possible armor units suggested that a major offensive was being planned and that their likely target was Kontum City and Polei Kleng Camp.

[1] Operation Wayne Grey began on 1 March, when A Company of the 3rd Battalion, 12th Infantry out of Polei Mrong were combat assaulted into Landing Zone (LZ) Swinger (14°25′44″N 107°37′37″E / 14.429°N 107.627°E / 14.429; 107.627).

The initial firefight lasted for over three hours before the PAVN retreated and the 1/92nd Field Artillery[2] was able to land and set up their guns.

Beginning on 1 March, with the support of the A/7-17th Air Cavalry the 1/8th was able to locate and destroy communications, supplies and vehicles along the Plei Trap road, as well as the recapturing of two M101 howitzers captured by the PAVN.

It began on 3 March when A Company, 3/8th Infantry came into contact with a battalion of PAVN troops at their headquarters at the top of a hill (14°20′42″N 107°36′18″E / 14.345°N 107.605°E / 14.345; 107.605).

On the 11th, Swift came into contact with a PAVN company and pulled back to their perimeter to call in B-52 airstrikes; they were again shelled by mortar fire.

Their mission was to establish company size blocking positions between their base at Hill 467 and Firebase 20, with the aim of cutting off supplies and reinforcements of PAVN in the area.

When they attempted to retrieve their missing men the next day, they again were forced to retreat back to LZ Cider under mortar fire.

While the PAVN was able to retreat back into Cambodia, Operation Wayne Grey was considered a success as it prevented any immediate attack against Kontum from materialising.

[1] According to witnesses of the assault, namely a Lieutenant Nolan and Captain Yamashita they believed that the mission took place over the border in Cambodia and not in Vietnam as the after action report and map coordinates say.

Eight days after D Company recaptured the artillery pieces and about halfway through the operation, U.S. Strategic Air Command began its secret bombing campaign against Cambodia.