Tatzates or Tatzatios (, from Tačat) was a prominent Byzantine general of Armenian descent, who in 782 defected to the Abbasids and was appointed governor of Arminiya.
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Tatzates or Tatzatios (, from Tačat) was a prominent Byzantine general of Armenian descent, who in 782 defected to the Abbasids and was appointed governor of Arminiya.
==Biography== Tatzates belonged to the noble Armenian Andzevatsi family. Probably in the 750s, he came to the Byzantine Empire and entered the service of Emperor Constantine V (r. 741–775). Under Constantine V, he reportedly fought against the Bulgars, and achieved the position of strategos (general and governor of a theme) by circa 760. It is not known which themes he commanded, but by 776 he led the Bucellarian Theme. In the same year, he led his army in a successful expedition against the Arabs, reaching Samosata. In 778, he took part in a successful large-scale expedition against Germanikeia under the overall command of Michael Lachanodrakon, and in 781 he fought, again under Lachanodrakon, in the Byzantine victory at Caesarea over an Arab invasion led by 'Abd al-Kabir.
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