The office of the Domestic of the Schools was a senior military post of the Byzantine Empire, extant from the 8th century until at least the early 14th century. Originally simply the commander of the
Lead seal of Alexios I Komnenos as "Grand Domestic of the West"
Fighting between Byzantines and Arabs Chronikon of Ioannis Skylitzes, end of 13th century
Staurakios or Stauracius was the shortest-reigning Byzantine emperor, ruling for 68 days between 26 July and 2 October 811.
Staurakios (above) retreats with his remaining forces, while Nikephoros I (below) is captured by the Bulgarians. Miniature from the 14th century Manasses Chronicle.
A solidus bearing the image of Staurakios (left) and Nikephoros I (right)