The same fate befell on the remaining Cambodian Army units and garrisons still holding on to the provincial capitals and some key towns. Throughout the country, thousands of demoralized Cambodian men and women who had the misfortune of being captured wearing the Army uniform – ranging from officers to NCOs, and even ordinary soldiers, regardless if they had committed any war crimes or not – were rounded up by Khmer Rouge guerrilla units and massacred. In Phnom Penh and elsewhere, some officers and enlisted men narrowly avoided capture by quickly changing to civilian clothes and went into hiding. While scores of surrendering Cambodian soldiers were simply shot by firing squad and had their bodies dumped into shallow graves dug in forest areas, a considerable number of them were sent to be 're-educated' in the new labor camps (best known as the "Killing Fields") promptly set up by the Khmer Rouge shortly after their victory, where they were forced to endure the camps' terrible living and working conditions until the 1978–79 Cambodian–Vietnamese War. Only a few Army personnel in April–May 1975 escaped by foot or by vehicle across the border into Thailand, where in the late 1970s they would provide the founding cadre for the anti-Vietnamese Sihanoukist National Army (ANS) and Khmer People's National Liberation Front (KPNLF) guerrilla forces.