Domen
Misico dux Vandalorum
Slavic inhabitants of the ERE played a very important and ambiguous at the same time role in Persian-Byzantine and Arab-Byzantine conflicts. The largest anti-feudal uprising in the Byzantine Empire - in year 820 - was lead by Thomas the Slav, who was an officer in Byzantine army! In general Slavic people were very numerous in Byzantine armies, and it is believed that in years 663 - 690 they organized internal revolts, supporting the Arabs.
Wikipedia article about Thomas the Slav:
http://en.wikipedia.org/wiki/Thomas_the_Slav
Thomas the Slav (this guy on horseback in the middle) negotiating with Arab invaders:
In 821 Thomas the Slav crowned himself for Byzantine Emperor in Antioch, which is why he is wearing a crown here:
Slavic soldiers in Byzantine service apparently sometimes played the role of a "5th Column", traitors, supporting Arab invaders. But before the Arabs came, it is believed that Slavic warriors in Byzantine service had an important role in Byzantine victory over Sassanid Empire.
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BTW - Thomas the Slav was born in Asia Minor, but he was born to Slavic parents, who were resettled to Asia Minor from Europe.
This shows, how far was the extent of Slavic settlement within the Byzantine Empire - there were Slavic settlers even in Asia Minor !!!
Wikipedia article about Thomas the Slav:
http://en.wikipedia.org/wiki/Thomas_the_Slav
Thomas the Slav (this guy on horseback in the middle) negotiating with Arab invaders:
In 821 Thomas the Slav crowned himself for Byzantine Emperor in Antioch, which is why he is wearing a crown here:

Slavic soldiers in Byzantine service apparently sometimes played the role of a "5th Column", traitors, supporting Arab invaders. But before the Arabs came, it is believed that Slavic warriors in Byzantine service had an important role in Byzantine victory over Sassanid Empire.
=================================================
BTW - Thomas the Slav was born in Asia Minor, but he was born to Slavic parents, who were resettled to Asia Minor from Europe.
This shows, how far was the extent of Slavic settlement within the Byzantine Empire - there were Slavic settlers even in Asia Minor !!!