Damaging raids on Syria by the Lakhmids in 529 also encouraged Justinian to strengthen his own Arab allies, helping the Ghassanid leader Al-Harith ibn Jabalah turn a loose coalition into a coherent kingdom which was able to gain the upper hand against the Lakhmids over the following decades. In 530, Belisarius led the Romans to victory over a much larger Persian force under Perozes at the Battle of Dara, while Sittas and Dorotheus defeated a Persian army under Mihr-Mihroe at the Battle of Satala. In 531, Belisarius was defeated by Persian and Lakhmid forces at the Battle of Callinicum but during the summer, the Romans captured some forts in Armenia and repulsed a Persian offensive. The Roman failure at Callinicum was followed by a commission of inquiry, the result of which was the dismissal of Belisarius from his post. Azarethes, the Persians' commander at Callinicum, was also stripped of his ranks due to his failure to capture any significant fortification.