Towards the end of 1980 Chea Chhut was persuaded by General
Dien Del to join forces with the
Khmer People's National Liberation Front (KPNLF) and at the end of 1982 Nong Chan became the
Khmer People's National Liberation Armed Forces's (KPNLAF) military headquarters, although Ampil Camp remained the administrative headquarters until it was destroyed in early 1985. Nong Chan housed the KPNLAF's 3rd, 7th and 9th battalions and a "
Special Forces" unit commanded by Khmer Captain Pahn Tai that was being trained by the British
SAS with arms and assistance from the Malaysian Army for
sabotage operations inside Cambodia. Because of its strategic importance to the KPNLAF, 4000 Vietnamese troops supported by
artillery and
T-54 tanks attacked Nong Chan again and destroyed it on
January 31, 1983. Ground fighting was reported outside the camp between Vietnamese troops based in Cambodia and about 2000 KPNLF guerrillas. At the same time the Vietnamese kept up a steady barrage of shells, rockets and mortars, killing a 66-year-old Thai farmer and damaging several houses and a
Buddhist temple in a neighboring Thai village. Meanwhile, MOULINAKA units were brushed aside, and KPNLF forces withdrew after a 36-hour fight. The
Khao-I-Dang ICRC hospital received over 100 civilian wounded. Soon, however, the camp was reoccupied and rebuilt. ==Destruction of the camp==