 Complete the following phrase:  Maslama commanded the summer expedition against the Byzantine Empire in 739, taking control of al-Matamir, the cavernous southern half of Cappadocia, and besieged and captured Ancyra modern Ankara. Maslamas victories marked the last Umayyad captures of a Byzantine fortress or town. The following summer the Umayyads launched the largest expedition against the Byzantines during Hishams reign. The main expedition was led by Maslamas brother Sulayman, and Maslama may have commanded a separate expedition during the same year. The Umayyads raided throughout western Anatolia but were beaten back by the Byzantines without any territorial gains, while two of the Caliphates leading generals, Abdallah al-Battal and Malik ibn Shuayb 