At that time, Warren Treadgold estimates that the corps numbered 2,000 men, a figure that possibly corresponds to its original size as well.

In the mid-8th century, under the rule of Emperor Constantine V (r. 741-775), and as part of his measures to reduce the power of the thematic generals following the revolt of Artabasdos, the Count of the Opsician Theme, the corps was downgraded.