This style of roman legionary helmet or quotgaleaquot dates from the 1st century bc to the 2nd century ad it is of the quotimperial gallic hquot type a style influenced heavily by the craftsmen of gaul france this style of helmet was no doubt worn by roman legionaries during julius caesar39s invasion of britain and was worn by the soldiers that garrisoned hadrian39s wall the horsehair crest which runs from side to side indicates that this helmet was worn by a centurion centuri