In September 1939, a long and extraordinary story began: the Second World War. 70 years later, studies, books, magazines, articles, websites, never stop the shelling. But large parts of this epic remain in the shadows. Thus, the role of the French merchant navy is rarely discussed. France had yet to fourth in the world merchant fleet. Its ships - among the finest and fastest at the time - its tankers also among the most important, often at the cutting edge of technology - and its cargo, became a formidable challenge at a time when the commercial aviation and stammered when everything is transported by sea. This book is the summary and the essential complement a series hitting. It presents the history of all merchant ships that brought, if only for a few days sometimes, the French flag, between 3 September 1939 and mid-August 1945. The iconography is rich and unique, is almost completely new.