As Company A approached the hamlet of Trung Luong 2 in the center of the valley they were hit by automatic weapon and mortar fire that wounded all of the officers except the commander.

[1]: 195 MGen Stanley R. Larsen ordered Col Hal Moore, commander of the 3rd Brigade, 1st Cavalry Division to take control of the operation which was now named Nathan Hale.

The Field Force Reserve unit, the 1st Battalion, 8th Cavalry Regiment was flown from Kon Tum to Dong Tre Camp and then into the valley, arriving in position 600m north of Hill 258 by 22:00.

[1]: 196 At 05:40 on 22 June the PAVN hit position Eagle with mortars and machine gun fire and then launched a Company-sized assault on the west perimeter defended by heavy weapons platoon of Company C 2/327th.

[1]: 197–8 This article incorporates public domain material from websites or documents of the United States Army Center of Military History.