The Khmer Rouge’s impact on Cambodia’s ancient heritage has been understudied. There are, at present, no major resources that explicitly present a centralized compilation of data or information regarding the relationship between the communist regime and the temples of Angkor nor the various damaging effects that a decade of internecine upheavals have had on the monuments. This absence of primary material is surprising considering the extensive archaeological and conservational work that has taken place in Cambodia, and not to mention the international fascination with Angkor. This article aims to take the first steps in redressing this palpable gap in the literature—it is a brief inquiry into the cause and effect of damage, desecration, and destruction committed to the major Angkorian monuments and the treatment of Cambodia’s ancient, tangible heritage by successive political regimes. It also attempts to deal with the inadequate nature of existing documentation that has hindered any analysis of the issues at hand. I restrict my attention to the Buddhist complexes in Cambodia with a focus on four phases of violence: “Operation Menu” or the American bombardment of 1969–70; the Cambodian Civil War, 1970–75; Democratic Kampuchea’s occupancy of power, 1975–79; and the Vietnamese invasion of 1978–79. In regard to what exactly happened to these monumental complexes at the hands of the Khmer Rouge, I have covered structural damage from conventional weaponry; the use, and, in most cases, misuse, of the temples by various political factions (including strategic, practical and quotidian, and propagandistic use); and the effect of conservation interruption and looting. In light of the recent destruction of cultural heritage in the ongoing conflicts in Syria and Iraq and the recent conflict in Mali, these issues remain perpetually relevant in world affairs.