death. Sex among fellow soldiers violated the Roman decorum against intercourse with another freeborn male. A soldier maintained his masculinity by not allowing his body to be used for sexual purposes. This physical integrity stood in contrast to the limits placed on his actions as a free man within the military hierarchy; most strikingly, Roman soldiers were the only citizens regularly subjected to corporal punishment, reserved in the civilian world mainly for slaves. Sexual integrity helped distinguish the status of the soldier, who otherwise sacrificed a great deal of his civilian autonomy, from that of the slave. In warfare, rape signified defeat, another motive for the soldier not to compromise his body sexually. An incident related by Plutarch in his biography of Marius illustrates the soldier's right to maintain his sexual integrity. A good-looking young recruit named Trebonius had been sexually harassed over a period of time by his superior officer, who happened to be Marius's nephew, Gaius Luscius. One night, having fended off unwanted advances on numerous occasions, Trebonius was summoned to Luscius's tent. Unable to disobey the command of his superior, he found himself the object of a sexual assault and drew his sword, killing Luscius. A conviction for killing an officer typically resulted in execution. When brought to trial, he was able to produce witnesses to show that he had repeatedly had to fend off Luscius, and "had never prostituted his body to anyone, despite offers of expensive gifts". Marius not only acquitted Trebonius in the killing of his kinsman, but gave him a crown for bravery. Roman historians record other cautionary tales of officers who abuse their authority to coerce sex from their soldiers, and then suffer dire consequences. The youngest officers, who still might retain some of the adolescent attraction that Romans favored in male–male relations, were advised to beef up their masculine qualities, such as not wearing perfume, nor trimming nostril and underarm hair. During wartime, the violent use of war captives for sex was not considered criminal rape. Mass rape was one of the acts of punitive violence during the sack of a city, but if the siege had ended through diplomatic negotiations rather than storming the walls, by custom the inhabitants were neither enslaved nor subjected to personal violence. Mass rape occurred in some circumstances, and is likely to be underreported in the surviving sources, but was not a deliberate or pervasive