Augustus

The legion, the standard army unit, was usually led by the commanding general’s deputy, a legatus, or legate. The legate also had at his disposal a number of military tribunes, staff officers recruited from upper-class families (unlike the civilian tribunes of the people).

Officially, a legion had a strength of between four thousand and six thousand men, although in practice it could be smaller (this was almost certainly the case with Octavian at Arretium). It was divided into ten cohorts, which were in turn subdivided into six centuries commanded by centurions; these junior officers were a legion’s backbone. The first cohort always stood in the front row at the right end of the line (the most honorable position) and was sometimes larger than the others.

Men signed up for at least six years’ service. Each legionary carried on his back a large quantity of equipment, weighing at least sixty-five pounds. This included sixteen days’ worth of rations, a cooking pot, tools for digging, two stakes for the camp palisade, two javelins to throw in battle, clothes, and any personal possessions. On the march, Roman soldiers resembled not the smart upright legionaries of Hollywood movies, but beasts of burden.

A soldier’s armor consisted of a bronze helmet, a cuirass of leather or metal, an oblong or oval shield made of sheets of wood covered by oxhide, a pilum or javelin (the head was designed to break off, so that it could not be thrown back), and a short, two-edged thrusting sword, the gladius. In Julius Caesar’s day, a legionary was paid nine hundred sesterces a year—not a princely wage, but frequently supplemented by a share of the booty won in victorious campaigns.

Discipline was severe, ranging from food rationing and pay deductions to public floggings and execution for desertion. The worst penalty, for mutiny or collective cowardice before the enemy by a group of troops (usually a cohort), was decimation. One in ten men was chosen at random and the remainder clubbed them to death. This brutal punishment could be effective, but, as when Antony had applied it at Brundisium, was more likely to impose sullen and temporary obedience than to restore morale.

More constructively, much attention was paid to fostering an esprit de corps. Every century carried its standard (a pole with insignia or emblems at its top), and a legion was represented by a silver eagle, carried by the aquilifer, a special standard-bearer in a lionskin headdress. These standards embodied a collective pride and honor, and the loss of a legionary eagle was an irretrievable disgrace. In the confusion of battle the standard helped to orient soldiers by showing them where their military unit was.

Today hand-to-hand fighting is relatively rare, but, after a preliminary phase of javelin throwing and sometimes archery, it was how battles were won and lost in the ancient world. It is hard to imagine the noise, crush, smells, blood, and terror of an ancient battle. Even then, it was recognized as being a particularly demanding experience. A line of soldiers at close quarters to the enemy would fight for only about fifteen minutes; the line would then retire and have its place taken by soldiers in the rear. The dead and wounded were dragged back and replaced by fresh men.

Octavian reached Hirtius north of Arretium, and their legions moved on in the direction of Mutina. Their aim was to break the siege and relieve the proconsul, Decimus Brutus, now dangerously short of provisions.

Despite this progress on the military front, Octavian was in a gloomy frame of mind. First and foremost, a propraetor was junior to a consul, and when he and Hirtius met he was clearly the subordinate officer: Hirtius divided command of the army between them, but insisted on having control of the two Macedonian legions. Octavian bit his lip and complied.

He was also irritated by the continuing efforts on the part of certain senators and the consuls to negotiate a settlement with Antony. He needed a war with a victorious outcome, for if Antony and the republican faction were reconciled, he would once again be isolated. That said, he did not want Antony destroyed: he could envision a time when the two men might need to combine against the Senate and Brutus and Cassius. The Senate had recently awarded the province of Syria to the tyrannicide Cassius. It was looking very much as though there was a conscious plan to build up the republican party and ruin the Caesarians. Appian summed up Octavian’s feelings: “He reflected on the way they [the Senate] had treated him like a boy, offering a statue [equestrian, in the Forum] and a front row at the theatre and calling him Propraetor, but in fact taking his army away from him.”