The French Company CIE is a three-letter acronym for Compagnie Internationale des Wagons-Lits et des Grands Express Europeens, which translates to International Sleeping Car Company and Great European Express. DEUX is a four-letter acronym for the French company Societe Nationale des Chemins de Fer Français, which translates to National Society of French Railways. Both companies are major players in the French transportation industry.