Sulla's civil war
Sulla's civil war was fought between the Roman general Lucius Cornelius Sulla and his opponents, the Cinna-Marius faction (usually called the Marians or the Cinnans after their former leaders Gaius Marius and Lucius Cornelius Cinna), in the years 83–81 BC. The war ended with a decisive battle just outside Rome itself. After the war the victorious Sulla made himself dictator of the republic. Prelude. Sulla had achieved temporary control of Rome and Marius's exile to Africa following his first march on Rome, but departed soon afterwards to lead the First Mithridatic War. This  departure allowed Gaius Marius and his son Gaius Marius the younger to return to Rome with an army and, with Lucius Cornelius Cinna, to wrest control of Rome back from Sulla's supporter Gnaeus Octavius during Sulla's absence. Based on the orders of Marius, some of his soldiers went through Rome killing the leading supporters of Sulla, including Octavius. Their heads were exhibited in the Forum. After five days, Cinna ordered his more disciplined troops to kill Marius's rampaging soldiers. All told some 100 Roman nobles had been murdered. Marius declared Sulla's reforms and laws invalid, officially  exiled Sulla, had himself elected to Sulla's eastern command, and Cinna and himself elected consuls for the year 86 BC. Marius died a fortnight after and Cinna was left in sole control of Rome. Having managed this achievement, the Marians sent out Lucius Valerius Flaccus with an army to relieve Sulla of his command in the east. Flaccus had been given as second in command Gaius Flavius Fimbria, an individual whom history records had few virtues. He was to eventually agitate against his commanding officer and incite the troops to murder Flaccus. In the meantime, the two Roman armies  camped next to each other and Sulla, not for the first time, encouraged his soldiers to spread dissension among Flaccus’ army. Many deserted to Sulla before Flaccus packed up and moved on north to threaten Mithridates’ northern dominions. In the meantime Sulla moved to intercept the new Pontic army and end the war at Orchomenus. Course. With Mithridates defeated and Cinna now dead in a mutiny, Sulla was determined to regain control of Rome. Result. As a result of this war, Sulla was installed as dictator of Rome, but many Italian towns and cities were heavily damaged: for instance, Sullan  forces inflicted extensive damage upon Forlì ("Forum Livii"), which had allied with Marius. The reconstruction took decades. In total control of Rome and most of Italy, Sulla instituted a series of proscriptions (a program of executing those whom he perceived as enemies of the state and confiscating their property). "Sulla immediately proscribed eighty persons without communicating with any magistrate. As this caused a general murmur, he let one day pass, and then proscribed two hundred and twenty more, and again on the third day as many. In an harangue to the people, he said, with reference to these measures, that  he had proscribed all he could think of, and as to those who now escaped his memory, he would proscribe them at some future time." The proscriptions are widely perceived as a response to similar killings which Marius and Cinna had implemented while they controlled the Republic during Sulla's absence. Proscribing or outlawing every one of those whom he perceived to have acted against the best interests of the Republic while he was in the East, Sulla ordered some 1,500 nobles ("i.e.," senators and equites) executed, although it is estimated that as many as 9,000 people were killed. The  purge went on for several months. Helping or sheltering a proscribed person was punishable by death, while killing a proscribed person was rewarded. Family members of the proscribed were not excluded from punishment, and slaves were not excluded from rewards. As a result, "husbands were butchered in the arms of their wives, sons in the arms of their mothers". The majority of the proscribed had not been enemies of Sulla, but instead were killed for their property, which was confiscated and auctioned off. The proceeds from auctioned property more than made up for the cost of rewarding those who killed  the proscribed, making Sulla even wealthier. Possibly to protect himself from future political retribution, Sulla had the sons and grandsons of the proscribed banned from running for political office, a restriction not removed for over 30 years. The young Gaius Julius Caesar, as Cinna's son-in-law, became one of Sulla's targets and fled the city. He was saved through the efforts of his relatives, many of whom were Sulla's supporters, but Sulla noted in his memoirs that he regretted sparing Caesar's life, because of the young man's notorious ambition. The historian Suetonius records that  when agreeing to spare Caesar, Sulla warned those who were pleading his case that he would become a danger to them in the future, saying: "In this Caesar there are many Mariuses." Sulla, who opposed the Gracchian "popularis" reforms, was an optimate; though his coming to the side of the traditional Senate originally could be described as more reactionary when dealing with the Tribunate and legislative bodies, while more visionary when reforming the court system, governorships and membership of the Senate. As such, he sought to strengthen the aristocracy, and thus the Senate. Sulla retained his earlier reforms, which required  senatorial approval before any bill could be submitted to the Plebeian Council (the principal popular assembly), and which had also restored the older, more aristocratic "Servian" organization to the Centuriate Assembly (assembly of soldiers). Sulla, himself a patrician and thus ineligible for election to the office of Plebeian Tribune, thoroughly disliked the office. As Sulla viewed the office, the Tribunate was especially dangerous and his intention was to not only deprive the Tribunate of power, but also of prestige. (Sulla himself had been officially deprived of his eastern command through the underhand activities of a tribune.) Over the previous three  hundred years, the tribunes had directly challenged the patrician class and attempted to deprive it of power in favor of the plebeian class. Through Sulla's reforms to the Plebeian Council, tribunes lost the power to initiate legislation. Sulla then prohibited ex-tribunes from ever holding any other office, so ambitious individuals would no longer seek election to the Tribunate, since such an election would end their political career. Finally, Sulla revoked the power of the tribunes to veto acts of the Senate, although he left intact the tribunes' power to protect individual Roman citizens. Sulla then increased the number  of magistrates elected in any given year, and required that all newly elected quaestors gain automatic membership in the Senate. These two reforms were enacted primarily to allow Sulla to increase the size of the Senate from 300 to 600 senators. This also removed the need for the censor to draw up a list of senators, since there were always more than enough former magistrates to fill the senate. To further solidify the prestige and authority of the Senate, Sulla transferred the control of the courts from the equites, who had held control since the Gracchi reforms, to the senators . This, along with the increase in the number of courts, further added to the power that was already held by the senators. Sulla also codified, and thus established definitively, the "cursus honorum", which required an individual to reach a certain age and level of experience before running for any particular office. Sulla also wanted to reduce the risk that a future general might attempt to seize power, as he himself had done. To this end he reaffirmed the requirement that any individual wait for ten years before being re-elected to any office. Sulla then established a system where all  consuls and praetors served in Rome during their year in office, and then commanded a provincial army as a governor for the year after they left office. Finally, in a demonstration of his absolute power, Sulla expanded the "Pomerium", the sacred boundary of Rome, unchanged since the time of the kings. Sulla's reforms both looked to the past (often re-passing former laws) and regulated for the future, particularly in his redefinition of majestas (treason) laws and in his reform of the Senate. Near the end of 81 BC, Sulla, true to his traditionalist sentiments, resigned his dictatorship, disbanded  his legions and re-established normal consular government. He stood for office (with Metellus Pius) and won election as consul for the following year, 80 BC. He dismissed his lictors and walked unguarded in the Forum, offering to give account of his actions to any citizen. In a manner that the historian Suetonius thought arrogant, Julius Caesar would later mock Sulla for resigning the dictatorship.