 As Byzantium expanded into Greater Armenia in the early 11th century, these were complemented or replaced by the commands of Iberia, Vaspurakan, Edessa and Ani.In the same vein, the "Armenian" themes seem to have been placed under a single "strategos" in the mid-11th century.The series of soldier-emperors culminating in Basil II led to a situation where by 1025 Byzantium was more powerful than any of its enemies.