During my MA I became fascinated with some coins of Constantius II which were of the 'falling horseman' type. This type represents a clear inversion in that a foot soldier is shown killing a horseman. This led me to types in which the emperor is shown riding, and also types where the emperor wears military dress. Such military types disappeared in the early 8th century, and were reintroduced in the 11th century. My PhD examines this reintroduction, and the use of such images in the imperial projection of power, until the end of the empire.