In total there is evidence for around 20 units of equites stablesiani between the late third and early sixth centuries. The Notitia Dignitatum (400-c.425) lists at least 15 units of equites stablesiani stationed throughout the Roman Empire, seven in the East, eight in the West. Two further units are recorded epigraphically at an earlier date, including an inscription on the Deurne helmet. At least another two units, although not directly documented, can be posited on the basis of attested regimental names and numbers.