''L'Union
was born from a 1943 meeting in Reims, Occupied France, between Henri Bertin of Ceux de la Résistance, Charles Guggiari of Libération-Nord'', Raymond Guyot of the
French Section of the Workers' International (SFIO), and "Maurice", the alias of a member of the
National Front. Bertin would later flee to Great Britain, while the latter three were deported to
Nazi concentration camps. The newspaper's first issue was written by , future president of the
Departmental Committee of Liberation; Henri Kinet, a schoolteacher and member of the National Front; , a member of the SFIO; and Edmond Forboteau, a member of
Libération-Nord. It was printed clandestinely by resistance fighter Serge Labruyère in April 1944. On 27 September 1945, the newspaper was set up as a
SARL with 12 owner associations: the National Front,
Ceux de la Libération,
Ceux de la Résistance,
Libération-Nord, the
Union des femmes françaises, the ''
, the Marne federation of the SFIO, the Marne federation of the French Communist Party, the Union départementale des syndicats ouvriers de la Marne
, the Alliance républicaine de la Marne
, the mouvement républicain de la Marne
, and the Union locale des syndicats chrétiens de Reims''. ==Notable personnel==