Yazid ibn al-Muhallab
Abbas participated regularly in the almost annual expeditions launched into Byzantine Asia Minor during these years. His most notable campaigns were the capture of Sebaste in Cilicia in 712 and of Antioch in Pisidia in 713, the raid into Paphlagonia in 721 where he is reported to have captured 20,000 prisoners, and a raid, placed in 722/723 but possibly reflecting an earlier campaign, that captured a fortress called Siza. Meanwhile, in 720, along with his uncle Maslama, he led the suppression of the revolt of the governor of Iraq, Yazid ibn al-Muhallab.