Once it had defeated Carthage, Rome began to expand over the entire Mediterranean. At that moment, a serious and unexpected threat became apparent at the borders of the Republic. Coming from Jutland, a Nordic people were intent on a massive armed migration that would upset the ethnic and political equilibrium of central Europe, which at that time was inhabited by peoples of Celtic origin. The Cimbri and the Teutoni were the principal peoples of this era. In little more than a decade, they devastated and terrorized a vast area of Europe. There has been much discussion on the part of historians about the origin of these peoples, whether they were of Germanic or Celtic origin, and their connection with the territory of Jutland, the ancient Cimbrian Chersonese. What motivations drove them to fight, and what happened to them after their defeat by the Roman legions? What is the relationship between the modern Cimbri and the ancient people of the same name? This work seeks to answer those questions, retracing the military events of that period.