The Roman army had not yet seen elephants in battle, and their inexperience turned the tide in Pyrrhus' favour at the Battle of Heraclea in 280 BC, and again at the Battle of Ausculum in 279 BC. Despite these victories, Pyrrhus found his position in Italy untenable. Rome steadfastly refused to negotiate with Pyrrhus as long as his army remained in Italy. Furthermore, Rome entered into a treaty of support with Carthage, and Pyrrhus found that despite his expectations, none of the other Italic peoples would defect to the Greek and Samnite cause. Facing unacceptably heavy losses with each encounter with the Roman army, and failing to find further allies in Italy, Pyrrhus withdrew from the peninsula and campaigned in Sicily against Carthage, abandoning his allies to deal with the Romans.