高棉共和國
The Fall of Phnom Penh was the capture of Phnom Penh, the capital of the Khmer Republic, by the Khmer Rouge on 17 April 1975, effectively ending the Cambodian Civil War. At the beginning of April 1975, Phnom Penh, one of the last remaining strongholds of the Khmer Republic, was surrounded by the Khmer Rouge and totally dependent on aerial resupply through Pochentong Airport.