After the reconquest of Armenia., the Muslim army undertook campaigns in Asia Minor. The Byzantines evacuated all forts between Antioch and Tarsus, and these forts were occupied by the Muslims. Under Uthman, the frontier with the Byzantines came to be extended up to the Tarsus.
In the meantime the Muslims had conquered the islands of Cypress and Rhodes. with the naval bases at Rhodes and Cypress, and the military bases at Tarsus the Muslims made raids into the Byzantine territory every year. Full details about such raids are not available but it is clear that these raids had much of nuisance value, and precluded the Byzantines from taking the offensive.