A historical analysis of the origins of US counterinsurgency policy provides context for understanding how precedents informed US intervention in El Salvador. What follows is a detailed, in-depth view of how the counterinsurgency unfolded—the nature, logic, and effectiveness of the policies, initiatives, and operations promoted by American strategists. D'Haeseleer's account disputes the "success" narrative by showing that El Salvador's achievements, mainly the spread of democracy, occurred as a result not of the American intervention but of the insurgents' war against the state. Most significantly, The Salvadoran Crucible contends that the reforms enacted during the war failed to address the underlying causes of the conflict, which today continue to reverberate in El Salvador. The book thus suggests a reassessment of the history of American counterinsurgency, and a course-correction for the future.