Life in a Roman Legion: Pay, Camps, Discipline and Daily Work

What serving in a Roman legion involved, from Polybius's levy and camp to imperial pay disputes and the Vindolanda tablets.

Avevide · Last reviewed October 24, 2026 · 9 min read

Rome's legions conquered the Mediterranean world, but the men in them spent far more time digging, marching, standing guard and worrying about pay than fighting battles. What was it actually like to serve?

We are lucky to have several kinds of evidence. The Greek historian Polybius described the legion of the Roman Republic in detail, from enrollment to the layout of the camp. Josephus, in his history of the Jewish war against Rome, described the imperial army on the march. Tacitus recorded the angry speeches of mutinous soldiers. And wooden writing tablets from Vindolanda, a fort in Roman Britain, preserve the paperwork and private letters of soldiers on the frontier.

This guide uses those sources, in public-domain translations where they are quoted, to walk through a soldier's life, and notes where modern historians disagree about how the army changed over time.

Joining up: the republican levy

In the Republic described by Polybius, military service was a duty of citizenship. In W. R. Paton's translation, Polybius explains that a cavalryman had to serve ten years in all and an infantryman sixteen years "before reaching the age of forty-six," with twenty years demanded from the infantry "In case of pressing danger." Citizens rated below a certain property level served in the navy instead. No one could hold political office before completing ten years of service.

Each year the consuls announced a day on which all citizens of military age had to present themselves. Military tribunes chose men in turn for each legion until it reached 4,200 infantry, or 5,000 "in times of exceptional danger," with 300 cavalry assigned to each legion.

Men were then sorted by age and wealth. Polybius writes that the tribunes "choose the youngest and poorest to form the velites," the light-armed skirmishers. The next group became hastati, men "in the prime of life" became principes, and "the oldest of all" became triarii. In a standard legion there were 600 triarii, 1,200 principes and 1,200 hastati, with the rest serving as velites.

What a soldier carried

Polybius describes the equipment of the heavy infantry: a large shield with an iron boss, two throwing spears called pila, a brass helmet, greaves and a sword "called a Spanish sword." It was, he says, "excellent for thrusting, and both of its edges cut effectually." Most men protected their chests with a brass plate a span square that he calls the "heart-protector" (pectorale), but "those who are rated above ten thousand drachmas" wore a coat of chain mail instead. The triarii carried long thrusting spears. A crest of tall feathers was meant to make each man look "twice his real height."

By the time of the empire, a soldier's load included tools as well as weapons. Josephus, in William Whiston's translation, lists the gear of the ordinary foot soldier: a spear and a long shield, "besides a saw and a basket, a pick-axe and an axe, a thong of leather and a hook, with provisions for three days, so that a footman hath no great need of a mule to carry his burdens."

The camp: a town built every night

The tools mattered because a Roman army on campaign built a fortified camp wherever it stopped. Polybius was struck by how regular these camps were. The whole camp formed a square, and "the way in which the streets are laid out and its general arrangement give it the appearance of a town." An open space of 200 feet separated the tents from the rampart, giving room to march troops in and out.

He contrasts Roman practice with Greek habits: the Greeks adapted their camps to natural defenses, partly, he says, because they avoided the work of entrenching. Josephus makes the same point about the army of his own day. The Romans, he writes, "do not begin to fight till they have walled their camp about," the camp is "four-square by measure," and carpenters stand ready with their tools.

Life inside followed set routines. Each night the watchword was issued on "a wooden tablet with the word inscribed on it," which passed from maniple to maniple and had to return to the tribunes before dark. If one tablet was missing, the tribune could trace exactly where the chain had broken. Breaking camp ran on signals too: at the first, tents came down; at the second, the pack animals were loaded; at the third, the column moved off.

Discipline and rewards

Roman discipline was famously harsh. Polybius describes the punishment for a sentry found asleep or absent. After a court-martial by all the tribunes, the guilty man suffered the fustuarium, which Paton translates as the "bastinado." The tribune touched him with a cudgel, "after which all in the camp beat or stone him, in most cases dispatching him in the camp itself." Even survivors could not return home, because no one in their families would dare to take them in.

When whole units fled their posts, the officers did not execute everyone. Instead, Polybius says, the tribune chose by lot a number "so adjusting the number thus chosen that they form as near as possible the tenth part" of the guilty, and those men were bastinadoed "mercilessly." This is the practice usually called decimation.

Rewards were just as public. A soldier who was first over an enemy wall at the storming of a city received a crown of gold. Men who saved a fellow citizen were honored, and the men they saved had to crown their rescuers. Soldiers hung the spoils they had won in the most conspicuous places in their homes.

Training was constant. Josephus says that every soldier was exercised every day "as if it were in time of war," and he offers a memorable line: one would not be mistaken "that should call those their exercises unbloody battles, and their battles bloody exercises."

Pay, food and the money question

Soldiers were paid, but not generously. In Polybius's day, he reports, "the foot-soldier receives two obols a day, a centurion twice as much, and a cavalry-soldier a drachma." An infantryman's grain ration was about two-thirds of an Attic medimnus a month. For Roman citizens, the quaestor deducted from their pay the price of their grain, their clothes and any extra weapons they needed.

Pay changed over time. The editor of the 1931 Loeb translation of Tacitus's Annals explains that after the value of the as coin fell during the war with Hannibal, legionaries effectively earned 5 1/3 asses a day; Julius Caesar doubled this, and it stood at 10 asses. The same editor notes that Augustus fixed legionary service at sixteen years, later extended to twenty, with a cash bounty on discharge in place of the land grants of earlier decades. The editor dates the first step to 16 BCE, but Cassius Dio, in Earnest Cary's translation, records it under the consulship of Tiberius and Quintilius Varus, that is, 13 BCE.

The soldiers' side of that story survives in Tacitus. When the legions in Pannonia mutinied after Augustus's death, their spokesman complained, in John Jackson's translation, that "ten asses a day was the assessment of body and soul: with that they had to buy clothes, weapons and tents, bribe the bullying centurion and purchase a respite from duty!" They demanded "a denarius a day" and discharge after sixteen years, pointing out that the praetorian guards in Rome received two denarii a day.

Veterans' rewards were a political issue at the highest level. In the Res Gestae, translated by Frederick Shipley, Augustus says that "The number of Roman citizens who bound themselves to me by military oath was about 500,000," of whom he settled "something more than 300,000" in colonies or sent home with land or money. He also records giving 170 million sesterces from his own fortune to a military treasury, "established on my advice that from it gratuities might be paid to soldiers who had seen twenty or more years of service."

Life on the frontier: the Vindolanda tablets

Some of the most human evidence comes from Vindolanda. The Roman Inscriptions of Britain website publishes the ink writing tablets found there, with translations and commentary by their editors.

One tablet, Tab. Vindol. 154, is a strength report for the First Cohort of Tungrians, an auxiliary infantry unit, which the editors date to the years around 92 to 97 CE. Dated May 18, it gives the unit's total strength as 752 men, including six centurions. Of these, 456 were absent, including 337 at Coria and 46 serving as guards for the governor. Of the 296 present, 31 were unfit for duty: 15 sick, 6 wounded and 10 suffering from inflammation of the eyes. That left 265 fit for service. The editors note that 752 is "tolerably close to a notional strength of 800," a useful reminder that units on paper and units in the field were not the same thing.

Another tablet, Tab. Vindol. 346, is part of a private letter found at the fort. The writer reports sending pairs of socks, two pairs of sandals and two pairs of underpants, and sends greetings to several named friends and to all the recipient's contubernales, his messmates. It is hard to find a better antidote to the image of the legionary as a faceless fighting machine.

How the army changed, and where historians disagree

Polybius's legion of maniples was not the army of the empire. The Loeb editor of Tacitus, for example, describes imperial legions as organized in cohorts, with "the standards of the three maniples in each cohort — thirty in each legion." How and when the army changed is one of the liveliest debates in Roman history.

The traditional story credits the general Marius, in 107 BCE, with opening the legions to landless volunteers and creating a professional army loyal to its generals. As David Rafferty explains in a review in the Bryn Mawr Classical Review, the French historian François Cadiou has challenged each part of that account. Cadiou argues that conscription remained the usual way of raising troops and that many soldiers owned property; Rafferty finds the case against volunteering convincing, observing that there is "very little evidence for volunteering" outside private armies raised in emergencies. Rafferty notes that specialists no longer see the "Marian reform" as the revolutionary act it was once thought to be, and that Cadiou goes further, concluding that the so-called post-Marian army itself is a historiographical mirage.

Other points remain open:

How typical were Polybius's rules? He wrote as an admiring observer, ending his account of rewards and punishments by saying it was no wonder Rome's wars ended in success, and his tidy system may describe ideals as much as daily practice.
How harsh was discipline in reality? Polybius describes the rules, not how often they were applied, so the frequency of the harshest punishments is hard to judge.
How well did soldiers live? The mutineers' complaints and the Vindolanda letters suggest that soldiers relied heavily on family, comrades and their own purchases, not just on the state.

Key takeaways

In the Republic described by Polybius, citizens were enrolled each year and sorted by age and wealth into velites, hastati, principes and triarii.
Soldiers built a fortified camp at every halt, laid out like a town, and ran daily life on strict routines such as the wooden watchword tablet.
Discipline was severe, including the fustuarium and decimation by lot, while public rewards honored bravery.
Pay was modest and long debated; mutineers under Tiberius demanded a denarius a day, and Augustus created a military treasury for veterans' gratuities.
Vindolanda's tablets show units below paper strength, men on detached duty and soldiers receiving socks and underwear from home.
Historians now question the old idea that Marius suddenly created a professional army of landless volunteers.

Sources

Spotted something out of date? Let us know.