Амр ибн аль-Ас
Abu Ubaida sent the commanders 'Amr ibn al-'As, Yazid ibn Abi Sufyan, and Shurahbil ibn Hassana back to their areas to reconquer them. Most of the areas submitted without a fight. Abu Ubaida himself, along with Khalid, moved to northern Syria once again to conquer them with a 17,000 strong army. Khalid along with his cavalry was sent to Hazir and Abu Ubaidah moved to Chalcis.