The Battle of Argentovaria or Battle of Argentaria was fought in May 378 between the Roman Empire and the invading army of the Lentienses, a branch of the Alamanni, at Argentovaria (near Colmar, France). With this defeat, the Lentienses disappear from history. The king of the Lentienses, Priarius, died during the battle. Emperor Gratian, who had given the command of the army for the battle to Naniemus and Mallobaudes, gained the title of Alemannicus Maximus.