<head>Officers of Infantry and Cavalry</head>The<foreign lang="la">Principes, Hastati,</foreign>and<foreign lang="la">Triarii,</foreign>each elect ten<note anchored="yes" place="marg" id="note30">Election of Centurions.</note>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<foreign lang="la">optio.</foreign>Next, in conjunction with the centurions, they divide the several orders (omitting the<foreign lang="la">Velites</foreign>) into ten companies each, and appoint to each company two centurions and two<foreign lang="la">optiones;</foreign>the<foreign lang="la">Velites</foreign>are divided equally among all the companies; these companies are called orders (<foreign lang="la">ordines</foreign>) or maniples (<foreign lang="la">manipuli</foreign>), or vexilla, and their officers are called centurions or<foreign lang="la">ordinum ductores.</foreign><note anchored="yes" place="unspecified" id="note31">Polybius does not mention the subdivision of maniples into centuries, for which the word ordines is sometimes used.<bibl n="Liv. 8.8" default="NO" valid="yes">Livy, 8, 8</bibl>;<bibl n="Liv. 42.34" default="NO" valid="yes">42, 34</bibl>.</note>Each maniple selects two of their strongest and best born men as standard-bearers (<foreign lang="la">vexillarii</foreign>). 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.<pb n="479" />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.
Walbank Commentary