[3] The founding conference of UIF was held in Kompong Som Loeu, Kampot province April 17–April 19, 1950.

[4] The conference elected a National Central Executive committee headed by Son Ngoc Minh.

[2] The founding conference of the UIF decided to launch a revolutionary proto-government, the People's Liberation Central Committee.

[1] In 1952, the UIF effectively incorporated the rival Issarak grouping of the Khmer National Liberation Committee, led by Leav Keo Moni and based in the country's north-west, though some anticommunist elements of the KNLC continued to operate independently.

The action constituted a major propaganda victory for the UIF, whose recruitment appeal had been curtailed by the promises of Prince Sihanouk of achieving independence from France.

[8] The UIF sent two delegates, Keo Moni and Mey Pho, to the 1954 conference on a peaceful solution to the conflicts in Indochina.

The outcome of the Geneva talks provided that former UIF guerrillas would have been protected by the International Commission of Supervision and Control during the election campaign, but in reality such guarantees were not given.

With this backdrop around a thousand of UIF cadres left for Vietnam along with the departing Viet Minh forces, on Polish ships provided by the ICSC on the Mekong river.