The Battle of Solicinium was fought in 368 between a Roman Empire army and the Alamanni. The Roman force was led by Emperor Valentinian I, and they managed to repel the Alamanni, but suffered heavy losses during the battle. There is little known about the battle. Roman historian Ammianus Marcellinus claims that different tribes organized for a major offensive, the last one to overcome the Germanic Limes. Forced to do battle, the Alamanni retreated onto a hill where they inflicted heavy casualties to the onrushing Romans until finally being defeated.