In the First World War, the frontline ran through West-Flanders (from Nieuwpoort to the French-Belgian border) and Nord-Pas de Calais (from Armentieres southward to Arras), and then further up to the Sommeand Aisne departments. This immense territory was literally cut in two, one side being occupied by the troops of the German Empire, the other by the allies. Even if the official border was still ...