In 624, Muhammad and his followers attempted to intercept a Meccan caravan led by Mu'awiya's father on its return from Syria, prompting Abu Sufyan to call for reinforcements. The Qurayshite relief army was routed in the ensuing Battle of Badr, in which Mu'awiya's elder brother Hanzala and their maternal grandfather, Utba ibn Rabi'a, were killed. Abu Sufyan replaced the slain leader of the Meccan army, Abu Jahl, and led the Meccans to victory against the Muslims at the Battle of Uhud in 625. After his abortive siege of Muhammad in Medina at the Battle of the Trench in 627, he lost his leadership position among the Quraysh.