domestikos ton scholon
Commander of the regiment of scholae. The first officer with this title appears in 767/8. In the 10th C the domesticos became very powerful among the army of the themata; in mid-10th C the office was divided in two, domestikoi ton scholon of the East and those of the West, commanders in chief of the eastern and the western provinces´ army respectively.

magistros
Higher office that Philotheos in his Kletorologion places above the anthypatos. This title lost its importance from the 10th century and gradually disappeared - most probably in the middle of the 12th century.

parakoimomenos
Τhe guardian of the imperial private chambers. This high office was given usually to eunuchs that were persons of confidence, since they could not ascend to the throne. From the 9th and up to the 11th century, this office assumed a great importance and there were παρακοιμώμενοι that played important roles in the course of the empire, such as Joseph Bringa.

strategos ("general")
During the Roman period his duties were mainly political. Οffice of the Byzantine state´s provincial administration. At first the title was given to the military and political administrator of the themes, namely of the big geographic and administrative unities of the Byzantine empire. Gradually the title lost its power and, already in the 11th century, strategoi were turned to simple commanders of military units, responsible for the defence of a region.

tagmata (pl.)
Military units stationed in Constantinople and its outskirts during the Middle Byzantine period. The most important tagmata were that of the Scholae, the Excubitors (these originated from respective units of the Early Byzantine period and were organized into an imperial guard and a central strike force by Constantine V), the Vigilia (established by Irene the Athenian) and the Hikanatoi (established by Nicephorus I).