From 215 to 250 CE, the Germanic Goths expanded south-eastwards and broke the Alan dominance on the Pontic Steppe. The Alans however seem to have had a significant influence on Gothic culture, who became excellent horsemen and adopted the Alanic animal style art. (The Roman Empire, during the chaos of the 3rd century civil wars, suffered damaging raids by the Gothic armies with their heavy cavalry before the Illyrian Emperors adapted to the Gothic tactics, reorganized and expanded the Roman heavy cavalry, and defeated the Goths under Gallienus, Claudius II and Aurelian).