June 18, 741: Death of Leo III
Between June 18 and June 27, 741: Constantine V is defeated at Dorylaeum by Artabasdos (leading the army of the theme of Opsikion). Artabasdos is proclaimed emperor at Dorylaeum
June 27, 741: Artabasdos is proclaimed emperor at Constantinople
December 10, 741: Artabasdos is recognized by pope Zacharias
May 742: Artabasdos (leading the Opsikion army) is defeated at Sardis by Constantine V (leading the army of the theme of Anatolikon)
August 742: Strategos Niketas (of the theme of Armeniakon) is defeated at Modrine by Constantine V (theme of Anatolikon) and strategos Sisinnios (theme of Thrakesion)
Late summer of 742 – fall of 743: Constantinople is besieged and blockaded by the forces of the themes of Thrakesion, of Anatolikon and of the Kibyrrhaiotai
Before November 2, 743: Strategos Niketas regroups his forces at Chrysopolis. Strategos Niketas (of the theme of Armeniakon) is defeated and arrested by Constantine V (leading the army of the theme of Anatolikon and part of the army of the theme of Thrakesion) at Nicomedia
November 2, 743 (midday): Constantine V storms and captures Constantinople. He regains his throne
November 2, 743 Artabasdos flees. Artabasdos is arrested at the castle of Poutzana (in the theme of Opsikion) by Constantine V