At eighteen he joined the army. That doctrine of the division of labor which now, with us, runs through and dominates all pursuits, had not as yet been made plain to the minds of men at Rome by the political economists of the day. It was well that a man should know something of many things--that he should especially, if he intended to be a leader of men, be both soldier and orator. To rise to be Consul, having first been Quæstor, Ædile, and Prætor, was the path of glory. It had been the special duty of the Consuls of Rome, since the establishment of consular government, to lead the armies of the Republic. A portion of the duty devolved upon the Prætors, as wars became more numerous; and latterly the commanders were attended by Quæstors. The Governors of the provinces, Proconsuls, or Proprætors with proconsular authority, always combined military with civil authority. The art of war was, therefore, a necessary part of the education of a man intended to rise in the service of the State. Cicero, though, in his endeavor to follow his own tastes, he made a strong effort to keep himself free from such work, and to remain at Rome instead of being sent abroad as a Governor, had at last to go where fighting was in some degree necessary, and, in the saddest phase of his life, appeared in Italy with his lictors, demanding the honors of a triumph. In anticipation of such a career, no doubt under the advice of his friends, he now went out to see, if not a battle, something, at any rate, of war. It has already been said how the citizenship of Rome was conferred on some of the small Italian States around, and not on others. Hence, of course, arose jealousy, which was increased by the feeling on the part of those excluded that they were called to furnish soldiers to Rome, as well as those who were included. Then there was formed a combination of Italian cities, sworn to remedy the injury thus inflicted on them. Their purpose was to fight Rome in order that they might achieve Roman citizenship; and hence arose the first civil war which distracted the Empire. Pompeius Strabo, father of Pompey the Great, was then Consul (B.C. 89), and Cicero was sent out to see the campaign under him. Marius and Sulla, the two Romans who were destined soon to bathe Rome in blood, had not yet quarrelled, though they had been brought to hate each other--Marius by jealousy, and Sulla by rivalry. In this war they both served under the Consuls, and Cicero served with Sulla. We know nothing of his doings in that campaign. There are no tidings even of a misfortune such as that which happened to Horace when he went out to fight, and came home from the battle-field "relicta non bene parmula."