Evan Schultheis reconsiders the evidence for Attila the Hun's most famous battle, the climax of his invasion of the Western Roman Empire that had reached as far as Orleans in France. Traditionally considered one of the pivotal battles in European history, saving the West from conquest by the Huns, the Catalaunian Fields is here revealed to be significant but less immediately decisive than claimed. This new study exposes over-simplified views of Attila's army, which was a sophisticated and complex all-arms force, drawn from the Huns and their many allies and subjects. The 'Roman' forces, largely consisting of Visigoth and Alan allies, are also analysed in detail. The author, a reenactor of the period, describes the motives and tactics of both sides. Drawing on the latest historiography and research of the primary sources, and utilizing Roman military manuals, Evan Schultheis offers a completely new tactical analysis of the battle and a drastic reconsideration of Hun warfare, the Roman use of federates, and the ethnography of the Germanic peoples who fought for either side. The result is a fresh and thorough case study of battle in the 5th century.