The account notes, uncomfortably, the bloodless human sacrifices performed to help turn the tide of the war in Rome's favour. While the Senate mustered their willing slaves, Hannibal offered his dishonoured Roman captives a chance for honourable death, in what Livy describes as something very like the Roman "munus". The "munus" thus represented an essentially military, self-sacrificial ideal, taken to extreme fulfillment in the gladiator's oath. By the "devotio" of a voluntary oath, a slave might achieve the quality of a Roman ("Romanitas"), become the embodiment of true "virtus" (manliness, or manly virtue), and paradoxically, be granted "missio" while remaining a slave. The gladiator as a specialist fighter, and the ethos and organization of the gladiator schools, would inform the development of the Roman military as the most effective force of its time. In 107 BC, the Marian Reforms established the Roman army as a professional body. Two years later, following its defeat at the Battle of Arausio: