Comitatenses, singular comitatensis, were a category of soldiers and units in the field armies of the later Roman Empire. The name derives from comitatus, “retinue”, originally used for the emperor’s entourage and troops accompanying him.
By the fourth and fifth centuries field armies did not necessarily remain beside the emperor. Comitatenses had an administrative status distinct from limitanei, palatine units and pseudocomitatenses. The latter were transferred into field armies from frontier forces.
The late Roman military system developed gradually and varied by region. Comitatenses was not merely an honorary name for any distinguished unit. The Notitia Dignitatum presents lists of field units separately from the troops of frontier commands.
This administrative distinction does not mean that frontier units never campaigned or that field armies never served on a frontier. When studying the late Roman army, a unit’s origins, current status and station must be distinguished.
Dominate, Soldiers of the Roman Empire of the Dominate era, Late Roman Empire, Limitanei
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