 The four groups were the Vietnamese-installed government of the (SOC) which was supported by the Cambodian People's Armed Forces (CPAF); the communist Democratic Kampuchea (DK – commonly known as the Khmer Rouge) which is supported by the National Army of Democratic Kampuchea (NADK); and the two non communist factions, the Khmer People's National Liberation Front (KPNLF) which was supported by Khmer People's National Liberation Armed Forces (KPNLAF); and the United Front for an Independent, Neutral, Peaceful and Cooperative Cambodia (FUNCINPEC) which was supported by the National Army of Independent Cambodia (ANKI).In August 1989, the UN proposed an observer mission to monitor the withdrawal of Vietnamese forces from Cambodia and supervise an internal peace process between the four factions.From 6–22 August 1989, two Australian officers were deployed to Thailand and Cambodia on the UN reconnaissance team planning the mission.