The firebase was first established in March 1970 by the 7th Cavalry Regiment, 45 km northwest of Núi Bà Đen and approximately 5 km from the Cambodian border.

At approximately 04:15 the People's Army of Vietnam (PAVN) 272nd Regiment hit the base with mortar, rocket and recoilless rifle fire hitting the command post and knocking out communications.

The battalion commander Lt Col Hannas was seriously injured, losing both legs in the initial bombardment.

The PAVN then launched infantry attacks on the base perimeter but were beaten back by dawn.

U.S. losses were 13 killed, while 74 PAVN dead were found in and around the base.