Here are gathered the essential shorter works of Yann Le Bohec, author of the fundamental La Legion III Auguste and many other, widely translated books. The papers are written in the years 1977-2007, four of them are published here for the first time. They round out the three great spheres of Le Bohec's work: the Punic wars, the Roman army in Gaul, and the Roman army in North Africa. They are clear and to the point and excel in their relentless drive to lay bare reasons for the changes that swept the Roman empire. Grounded in diplomatic, social, and cultural history as one may expect of the work of modern scholars, these papers also have the virtue of casting a keen eye on strategy and tactics, unfolding true military history.Their collection in one volume, with addenda and an index, enhances their usefulness for a long time to come. Aus dem Inhalt Les guerres puniques: La marine romaine et la premiere guerre punique - Geostrategie de la premiere guerre punique - L'honneur de Regulus - Hannibal stratege et tacticien L'armee romaine et la Gaule: Strategie et tactique dans les livres V et VI du De bello gallico - Le clerge celtique et la guerre des Gaules - L'armee romaine en Gaule a l'epoque de Tibere Les milites glanici: possibilites et probabilites - La VIIIe Legion Auguste et Langres (Haute-Marne) L'armee romaine en Afrique: Le role social et politique de l'armee romaine dans les provinces d'Afrique - La strategie de Rome en Afrique - La "frontiere militaire" de la Numidie, de Trajan a 238 - Le plan de la Timgad primitive - Etudes sur la garnison de Carthage - Encore les numeri collati