Cohors secunda Gallorum veterana equitata ("2nd part-mounted veteran Cohort of Gauls") was a mixed infantry and cavalry regiment of the Auxilia corps of the Imperial Roman army.

Given the regiment's station on the lower Danube in AD 99, scholars consider it highly likely that it participated in the Conquest of Dacia by the emperor Trajan (r.

In view of its size and long-term stationing on the northern British frontier, facing the unconquered Caledonia (Scotland), the regiment almost certainly participated in all the major campaigns recorded in this turbulent region, including: The regiment was accorded two honorific titles: Votive altars dedicated by the regiment's commanders reflect the official cults of the Roman army.

However, Mars is accorded the epithet Belatucadrus, thus co-honouring a local deity, the Celtic god Belatucadros.

[10] An altar dedicated by a German vexillatio ("detachment") of the regiment demonstrates the more local cults followed by the unit's ordinary soldiers.