the nation itself. Facing them was the FUNK's armed wing, the Cambodian People's National Liberation Armed Forces (CPNLAF) which received arms and ammunition freely from the nation's porous borders. While the CPNLAF was far smaller, the FANK High Command was always faced with the problem of how to provide adequate equipment for the swelling number of volunteers who flocked to fight the NVA and the Khmer Rouge from their dwindling stocks. As the war progressed, weapons and ammunition, not to mention training grounds, became rarer, the FANK was unable to train in-country their new recruits, leaving it an army of raw conscripts and demoralized veterans. The FANK was already placed at a strategic disadvantage since May 1970, following the seizure of the northeastern areas of the country (the provinces of Stung Treng, Ratanakiri, Kratie, and Mondulkiri) by the NVA in response to the Lon Nol ultimatum and the loss to the Khmer Rouge of several peripheral eastern and southwestern Cambodian provinces (Kampot, Koh Kong, Kampong Cham, Preah Vihear, plus portions of Siem Reap, Oddar Meanchey, Kampong Thom, Prey Veng, and Svay Rieng Provinces) during that same year. Collapse In January 1975, coinciding with the North Vietnamese winter offensive that shattered the South's defences apart, the Khmer Rouge closed in on Phnom Penh, already overcrowded with 250,000 civilian refugees, and besieged it. President Lon Nol, FANK Commander-in-Chief Gen. Sosthene Fernandez and other Khmer Republic officials could not coordinate an effective resistance and at the same time feed the refugees and residents of Phnom Penh. On April 1, Marshal Lon Nol resigned from the Presidency and left the Country by plane to Thailand, although most of the senior civilian and military government officials decided to stay. Later on April 17, the armed forces’ Chief of the General Staff Lt. Gen. Sak Sutsakhan was evacuated together with his family and relatives of other officials by helicopter to Kampong Thom, thus effectively ending the FANK's existence as a coherent fighting force. The last stand of the army of the ill-fated Khmer Republic in any form took place around the Preah Vihear Temple in the Dângrêk Mountains, close to the Thai border. Remnants of the FANK's 9th Brigade Group occupied the area for a few weeks in late April 1975, following the collapse of the Lon Nol regime. Even though their government had surrendered, FANK soldiers continued to fiercely hold their ground for nearly a