 In the middle Byzantine period (9th–12th centuries), the term "stratopedon" came to signify more the army on campaign, rather than the camp itself; hence the term "stratopedarchēs" was used more in the sense of "commander-in-chief".The term acquired a technical meaning in 967, when Emperor Nikephoros II Phokas () named the eunuch Peter as "stratopedarchēs" before sending him with an army to Cilicia.The "Escorial Taktikon", written a few years later, shows the existence of two "stratopedarchai", one of the East (Anatolia) and one of the West (the Balkans).