1914 ... From the first days of the conflict, the camps of military prisoners fill up. Foreign civilians or sometimes French are sorted and also finish in custody. To curb escapes, the camps will issue their own currencies to return the money received by the prisoners' families or simply to pay for the fruits of their labor. Small piece of paper or cardboard created in the emergency, a handwritten value and the stamp of the camp: the currency was created.400.000 military prisoners, 70.000 civil prisoners, hundreds of places of detention, a multitude of emissions of banknotes or coins to identify, classify, evaluate the rarity of these, in order to give them a quotation at the fair.By this book intended primarily to collectors in numismatics, I propose to go further by talking these small pieces of cardboard stamped in all directions; to rediscover the life of our regions, of our villages, but also the life of these prisoners coming from so different horizons, sorted by nationality, dangerousness, competence or according to the game of the alliances between the Nations. A century after the end of the conflict, Denis Bouglouan, a collector and passionate about this unpretentious subject, invites you to bring these small notes, present in many collections, to life and to give them back their historical value. You can also enrich a future reprint of this book by sharing it with you. of your knowledge, photos .... on this subject.