Based on the Datawar research program developed by three French academic institutions, this book seeks to explore the following research question: how do social practices of data collection and analysis in quantitative conflict studies influence researchers' and practitioners' representations of armed conflict? The editors and authors investigate both scientific practices in the field of quantitative conflict studies and the impact of these practices on practitioners' vision of war, covering the full lifecycle of quantitative conflict data, from collection and analysis to their use and dissemination by military and diplomatic institutions, humanitarian organizations, and the media.