The Cambodian Civil War was a military conflict that pitted the guerrilla forces of the Maoist-oriented Communist Party of Kampuchea (nicknamed the Khmer Rouge) and the armed and security forces of the Nonaligned Kingdom of Cambodia from 1967 to 1970, then between the joint Monarchist, Maoist and Marxist-Leninist National United Front of Kampuchea alliance and the pro-western Khmer Republic from 1970 to 1975. Main combatants comprised:
The Khmer Rouge used a small number of field guns or captured howitzers from government forces.
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