Byzantine Tagmata Guard Corps

Timeline

1. 701–717Constantinople · ConstantinopleFrom the late 7th to early 8th century, the empire contracted its lines under Arab pressure, and the central mobile army gradually took shape as several tagmata regiments. Stationed in the capital's outskirts and directly controlled by the emperor, they complemented the frontier troops dispersed in the Anatolian themes.
2. 717–741Constantinople's wall defenses · ConstantinopleDuring Leo III's reign, tagmata troops played a key role in the capital's defense and reinforcement of the Asia Minor front. The guards, a mixed cavalry-infantry force, together with city-defense measures such as Greek fire, maintained the empire's military presence in its core region.
3. 741–800Thrace—Anatolia · BalkansConstantine V strengthened tagmata training and equipment, personally leading the guards on expeditions against the Bulgar khaganate and the Arab frontier multiple times. In the later 8th century, the tagmata and theme troops operating together became the mainstay of Byzantium's restored offensive capability and also bore the function of suppressing internal unrest.