Thomas the Slav

Thomas the Slav, a prominent figure in the 9th century Byzantine Empire, was a military commander of Slavic origin hailing from the Pontus region, now part of north-eastern Turkey. His rise to prominence began under the tutelage of General Bardanes Tourkos, alongside future emperors Michael II and Leo V the Armenian. However, after Bardanes' failed rebellion in the year eight hundred and three, Thomas faded into obscurity until the ascension of Leo V, which saw him elevated to a senior military command in central Asia Minor.

In the year eight hundred and twenty, following the assassination of Leo and the subsequent usurpation of the throne by Michael II the Amorian, Thomas seized the opportunity to revolt, proclaiming his claim to the imperial throne. He swiftly garnered support from the majority of the themes, or provinces, and troops in Asia Minor. His military prowess was evident as he successfully repelled Michael's initial counter-attacks and forged an alliance with the Abbasid Caliphate.

With the backing of maritime themes and their naval forces, Thomas launched a campaign across to Europe, laying siege to Constantinople. Despite his efforts, the imperial capital withstood his assaults from both land and sea. In a desperate bid for assistance, Michael II called upon the Bulgarian Khan Omurtag, who inflicted significant casualties on Thomas's forces, leading to a retreat when Michael himself took to the battlefield months later.

Seeking refuge in Arcadiopolis, Thomas found himself besieged by Michael's troops. Ultimately, his supporters surrendered him in exchange for a pardon, leading to his execution. Thomas's rebellion stands as one of the largest in Byzantine history, though the exact motivations and circumstances remain shrouded in competing historical narratives, with various interpretations attributing his actions to a mix of personal ambition, social upheaval, and a reaction against Iconoclasm.