by Polybius
18. The result of this power of the several estates for mutual help or harm is a union sufficiently firm for all emergencies, and a constitution than which it is impossible to find a better. For whenever any danger from without compels them to unite and work together, the strength which is developed by the State is so extraordinary, that everything required is unfailingly carried out by the eager rivalry shown by all classes to devote their whole minds to the need of the hour, and to secure that any determination come to should not fail for want of promptitude; while each individual works, privately and publicly alike, for the accomplishment of the business in hand. Accordingly, the peculiar constitution of the State makes it irresistible, and certain of obtaining whatever it determines to attempt. Nay, even when these external alarms are past, and the people are enjoying their good fortune and the fruits of their victories, and, as usually happens, growing corrupted by flattery and idleness, show a tendency to violence and arrogance, — it is in these circumstances, more than ever, that the constitution is seen to possess within itself the power of correcting abuses. For when any one of the three classes becomes puffed up, and manifests an inclination to be contentious and unduly encroaching, the mutual interdependency of all the three, and the possibility of the pretensions of any one being checked and thwarted by the others, must plainly check this tendency: and so the proper equilibrium is maintained by the impulsiveness of the one part being checked by its fear of the other....
ON THE ROMAN ARMY
19. After electing the Consuls they proceed to elect military tribunes, — fourteen from those who had five years’, and ten from those who had ten years’, service. All citizens must serve ten years in the cavalry or twenty years in the infantry before the forty-sixth year of their age, except those rated below four hundred asses. The latter are employed in the navy; but if any great public necessity arises they are obliged to serve as infantry also for twenty campaigns: and no one can hold an office in the state until he has completed ten years of military service....
When the Consuls are about to enrol the army they give public notice of the day on which all Roman citizens of military age must appear. This is done every year. When the day has arrived, and the citizens fit for service are come to Rome and have assembled on the Capitoline, the fourteen junior tribunes divide themselves, in the order in which they were appointed by the people or by the Imperators, into four divisions, because the primary division of the forces thus raised is into four legions. The four tribunes first appointed are assigned to the legion called the 1st; the next three to the 2d; the next four to the 3d; and the three last to the 4th. Of the ten senior tribunes, the two first are assigned to the 1st legion; the next three to the 2d; the two next to the 3d; and the three last to the 4th.
20. This division and assignment of the tribunes having been settled in such a way that all four legions have an equal number of officers, the tribunes of the several legions take up a separate position and draw lots for the tribes one by one; and summon the tribe on whom it from time to time falls. From this tribe they select four young men as nearly like each other in age and physical strength as possible. These four are brought forward, and the tribunes of the first legion picks out one of them, those of the second another, those of the third another, and the fourth has to take the last. When the next four are selected the tribunes of the second legion have the first choice, and those of the first the last. With the next four the tribunes of the third legion have the first choice, those of the second the last; and so on in regular rotation: of which the result is that each legion gets men of much the same standard. But when they have selected the number prescribed, — which is four thousand two hundred infantry for each legion, or at times of special danger five thousand, — they next used to pass men for the cavalry, in old times after the four thousand two hundred infantry; but now they do it before them, the selection having been made by the censor on the basis of wealth; and they enrol three hundred for each legion.
21. The roll having been completed in this manner, the tribunes belonging to the several legions muster their men; and selecting one of the whole body that they think most suitable for the purpose, they cause him to take an oath that he will obey his officers and do their orders to the best of his ability. And all the others come up and take the oath separately, merely affirming that they will do the same as the first man.
At the same time the Consuls send orders to the magistrates of the allied cities in Italy, from which they determine that allied troops are to serve: declaring the number required, and the day and place at which the men selected must appear. The cities then enrol their troops with much the same ceremonies as to selection and administration of the oath, and appoint a commander and a paymaster.
The Military Tribunes at Rome, after the administering of the oath to their men, and giving out the day and place at which they are to appear without arms, for the present dismiss them. When they arrive on the appointed day, they first select the youngest and poorest to form the Velites, the next to them the Hastati, while those who are in the prime of life they select as Principes, and the oldest of all as Triarii. For in the Roman army these divisions, distinct not only as to their ages and nomenclature, but also as to the manner in which they are armed, exist in each legion. The division is made in such proportions that the senior men, called Triarii, should number six hundred, the Principes twelve hundred, the Hastati twelve hundred, and that all the rest as the youngest should be reckoned among the Velites. And if the whole number of the legion is more than four thousand, they vary the numbers of these divisions proportionally, except those of the Triarii, which is always the same.
22. The youngest soldiers or Velites are ordered to carry a sword, spears, and target (parma). The target is strongly made, and large enough to protect the man; being round, with a diameter of three feet. Each man also wears a head-piece without a crest (galea); which he sometimes covers with a piece of wolf’s skin or something of that kind, for the sake both of protection and identification; that the officers of his company may be able to observe whether he shows courage or the reverse on confronting dangers. The spear of the velites has a wooden haft of about two cubits, and about a finger’s breadth in thickness; its head is a span long, hammered fine, and sharpened to such an extent that it becomes bent the first time it strikes, and cannot be used by the enemy to hurl back; otherwise the weapon would be available for both sides alike.
The second rank, the Hastati, are ordered to have the complete panoply. This to a Roman means, first, a large shield (scutum), the surface of which is curved outwards, its breadth two and a half feet, its length four feet, — though there is also an extra sized shield in which these measures are increased by a palm’s breadth. It consists of two layers of wood fastened together with bull’s-hide glue; the outer surface of which is first covered with canvas, then with calf’s skin, on the upper and lower edges it is bound with iron to resist the downward strokes of the sword, and the wear of resting upon the ground. Upon it also is fixed an iron boss (umbo), to resist the more formidable blows of stones and pikes, and of heavy missiles generally. With the shield they also carry a sword (gladius) hanging down by their right thigh, which is called a Spanish sword. It has an excellent point, and can deal a formidable blow with either edge, because its blade is stout and unbending. In addition to these they have two pila, a brass helmet, and greaves (ocreae). Some of the pila are thick, some fine. Of the thicker, some are round with the diameter of a palm’s length, others are a palm square. The fine pila are like moderate sized hunting spears, and they are carried along with the former sort. The wooden haft of them all is about three cubits long; and the iron head fixed to each half is barbed, and of the same length as the haft. They take extraordinary pains to attach the head to the haft firmly; they make the fastening of the one to the other so secure for use by binding it half way up the wood, and riveting it with a series of clasps, that the iron breaks sooner than this fastening comes loose, although its thickness at the so
cket and where it is fastened to the wood is a finger and a half’s breadth. Besides these each man is decorated with a plume of feathers, with three purple or black feathers standing upright, about a cubit long. The effect of these being placed on the helmet, combined with the rest of the armour, is to give the man the appearance of being twice his real height, and to give him a noble aspect calculated to strike terror into the enemy. The common soldiers also receive a brass plate, a span square, which they put upon their breast and call a breastpiece (pectorale), and so complete their panoply. Those who are rated above a hundred thousand asses, instead of these breastpieces wear, with the rest of their armour, coats of mail (loricae). The Principes and Triarii are armed in the same way as the Hastati, except that instead of pila they carry long spears (hastae).
24. The Principes, Hastati, and Triarii, each elect ten centurions according to merit, and then a second ten each. All these sixty have the title of centurion alike, of whom the first man chosen is a member of the council of war. And they in their turn select a rear-rank officer each who is called optio. Next, in conjunction with the centurions, they divide the several orders (omitting the Velites) into ten companies each, and appoint to each company two centurions and two optiones; the Velites are divided equally among all the companies; these companies are called orders (ordines) or maniples (manipuli), or vexilla, and their officers are called centurions or ordinum ductores. Each maniple selects two of their strongest and best born men as standard-bearers (vexillarii). And that each maniple should have two commanding officers is only reasonable; for it being impossible to know what a commander may be doing or what may happen to him, and necessities of war admitting of no parleying, they are anxious that the maniple may never be without a leader and commander.
When the two centurions are both on the field, the first elected commands the right of the maniple, the second the left: if both are not there, the one who is commands the whole. And they wish the centurions not to be so much bold and adventurous, as men with a faculty for command, steady, and of a profound rather than a showy spirit; not prone to engage wantonly or be unnecessarily forward in giving battle; but such as in the face of superior numbers and overwhelming pressure will die in defence of their post.
25. Similarly they divide the cavalry into ten squadrons (turmae), and from each they select three officers (decuriones), who each select a subaltern (optio). The decurio first elected commands the squadron, the other two have the rank of decuriones: a name indeed which applies to all alike. If the first decurio is not on the field, the second takes command of the squadron. The armour of the cavalry is very like that in Greece. In old times they did not wear the lorica, but fought in their tunics (campestria); the result of which was that they were prompt and nimble at dismounting and mounting again with despatch, but were in great danger at close quarters from the unprotected state of their bodies. And their lances too were useless in two ways: first because they were thin, and prevented their taking a good aim; and before they could get the head fixed in the enemy, the lances were so shaken by the mere motion of the horse that they generally broke. Secondly, because, having no spike at the butt end of their lance, they only had one stroke, namely that with the spear-head; and if the lance broke, what was left in their hands was entirely useless. Again they used to have shields of bull’s hide, just like those round cakes, with a knob in the middle which are used at sacrifices, which were useless at close quarters because they were flexible rather than firm; and, when their leather shrunk and rotted from the rain, unserviceable as they were before, they then became entirely so. Wherefore, as experience showed them the uselessness of these, they lost no time in changing to the Greek fashion of arms: the advantages of which were, first, that men were able to deliver the first stroke of their lance-head with a good aim and effect, because the shaft from the nature of its construction was steady and not quivering; and, secondly, that they were able, by reversing the lance, to use the spike at the butt-end for a steady and effective blow. And the same may be said about the Greek shields: for, whether used to ward off a blow or to thrust against the enemy, they neither give nor bend. When the Romans learnt these facts about the Greek arms they were not long in copying them; for no nation has ever surpassed them in readiness to adopt new fashions from other people, and to imitate what they see is better in others than themselves.
26. Having made this distribution of their men and given orders for their being armed, as I have described, the military tribunes dismiss them to their homes. But when the day has arrived on which they were all bound by their oath to appear at the place named by the Consuls (for each Consul generally appoints a separate place for his own legions, each having assigned to him two legions and a moiety of the allies), all whose names were placed on the roll appear without fail: no excuse being accepted in the case of those who have taken the oath, except a prohibitory omen or absolute impossibility. The allies muster along with the citizens, and are distributed and managed by the officers appointed by the Consuls, who have the title of Praefecti sociis and are twelve in number. These officers select for the Consuls from the whole infantry and cavalry of the allies such as are most fitted for actual service, and these are called extraordinarii (which in Greek is ἐπίλεκτοι.) The whole number of the infantry of the socii generally equals that of the legions, but the cavalry is treble that of the citizens. Of these they select a third of the cavalry, and a fifth of the infantry to serve as extraordinarii. The rest they divide into two parts, one of which is called the right, the other the left wing (alae).
These arrangements made, the military tribunes take over the citizens and allies and proceed to form a camp. Now the principle on which they construct their camps, no matter when or where, is the same; I think therefore that it will be in place here to try and make my readers understand, as far as words can do so, the Roman tactics in regard to the march (agmen), the camp (castrorum metatio), and the line of battle (acies). I cannot imagine any one so indifferent to things noble and great, as to refuse to take some little extra trouble to understand things like these; for if he has once heard them, he will be acquainted with one of those things genuinely worth observation and knowledge.
27. Their method of laying out a camp is as follows. The place for the camp having been selected, the spot in it best calculated to give a view of the whole, and most convenient for issuing orders, is appropriated for the general’s tent (Praetorium).
Having placed a standard on the spot on which they intend to put the Praetorium, they measure off a square round this standard, in such a way that each of its sides is a hundred feet from the standard, and the area of the square is four plethra. Along one side of this square — whichever aspect appears most convenient for watering and foraging — the legions are stationed as follows. I have said that there were six Tribuni in each legion, and that each Consul had two legions, — it follows that there are twelve Tribuni in a Consular army. Well, they pitch the tents of these Tribuni all in one straight line, parallel to the side of the square selected, at a distance of fifty feet from it (there is a place too selected for the horses, beasts of burden, and other baggage of the Tribuni); these tents face the outer side of the camp and away from the square described above, — a direction which will henceforth be called “the front” by me. The tents of the Tribuni stand at equal distances from each other, so that they extend along the whole breadth of the space occupied by the legions.
28. From the line described by the front of these tents they measure another distance of a hundred feet towards the front. At that distance another parallel straight line is drawn, and it is from this last that they begin arranging the quarters of the legions, which they do as follows: — they bisect the last mentioned straight line and from that point draw another straight line at right angles to it; along this line, on either side of it facing each other, the cavalry of the two legions are quartered with a space of fifty feet between them, which space is exactly bisected by the line last mentioned. The manner of
encamping the infantry is similar to that of the cavalry. The whole area of each space occupied by the maniples and squadrons is a square, and faces the via; the length facing the via is one hundred feet, and they generally try to make the depth the same, except in the case of the socii; and when they are employing legions of an extra number, they increase the length and depth of these squares proportionally.
29. The spaces assigned to the cavalry are opposite the space between the two groups of tents belonging to the Tribuni of the two legions, at right angles to the line along which they stand, like a cross-road; and indeed the whole arrangement of the viae is like a system of cross-roads, running on either side of the blocks of tents, those of the cavalry on one side and those of the infantry on the other. The spaces assigned to the cavalry and the Triarii in each legion are back to back, with no via between them, but touching each other, looking opposite ways; and the depth of the spaces assigned to the Triarii is only half that assigned to other maniples, because their numbers are generally only half; but though the number of the men is different, the length of the space is always the same owing to the lesser depth. Next, parallel with these spaces, at a distance of fifty feet, they place the Principes facing the Triarii; and as they face the space between themselves and the Triarii, we have two more roads formed at right angles to the hundred-foot area in front of the tents of the Tribunes, and running down from it to the outer agger of the camp on the side opposite to that of the Principia, which we agreed to call the front of the camp. Behind the spaces for the Triarii and looking in the opposite direction, and touching each other, are the spaces for the Hastati. These several branches of the service (Triarii, Principes, Hastati), being each divided into ten maniples, the cross-roads between the blocks are all the same length and terminate in the front agger of the camp; towards which they cause the last maniples in the rows to face.