Romain Ducoulombier has a degree in history and currently teaches history at the Lycée du Noordover in Grande-Synthe (Nord). He is a member of the Observatoire des Radicalités Politiques of the Fondation Jean-Jaurès. In 2007, under the supervision of Marc Lazar, he defended a doctoral thesis at Sciences Po Paris on ‘Régénérer le socialisme: Aux origines du communisme en France (1905-1925)’, which won the Henri-Hertz Prize of the Universities of Paris. He is also co-editor with Vincent Chambarlhac of ‘Les socialistes français et la Grande Guerre. Ministres, militants, combattants de la majorité, 1914-1918’ (Éditions universitaires de Dijon, 2008).