Petulantes
Petulantes was an "auxilia palatina" of the Late Roman army. History. It is possible they fought in the Battle of the Milvian Bridge for Emperor Constantine I (312). This assumption is based on the fact that Constantine had possibly had them portrayed on his triumphal arch in Rome. In the 4th century, the "Petulantes" were in the army of the emperor Julian. The unit amounted to 500 men, but, in order to obtain a tactically valid unit, they were often united with the "Celtae". As part of Julian's army, the "Petulantes" took part in the victorious Battle of  Strasbourg (357). When Julian, camped in Lutetia, received the order from his cousin the Emperor Constantius II to send some troops (including the "Petulantes") to the east, the troops revolted, because Julian had promised to keep them near their families. One of the standard-bearers of the "Petulantes", Maurus, put the crown on Julian's head, proclaiming him "Augustus" (361). Together with the "Celtae", the "Petulantes" fought against the Alamanni near Sanctium, in Raetia. In 365, the "Augustus Senior" of the west, Valentinian I, and the "Augustus Iunior" of the east, Valens, divided the army in two parts, and it  is possible that in this occasion the "Petulantes" were divided into two units, the "seniores" and the "iuniores". The "Notitia Dignitatum", an early-5th century document, lists the "Petulantes seniores" among the "auxilia palatina", the elite units, under the command of the "magister peditum" of the west. The same document gives the "Petulantes iuniores" under the command of the "magister militum per Illyricum", with a different shield pattern.