The History of the Decline and Fall of the Roman Empire - Edward Gibbon [21]
[Footnote 41: See an admirable digression on the Roman discipline, in the sixth book of his History.]
[Footnote 42: Vegetius de Re Militari, l. ii. c. 4, &c.
Considerable part of his very perplexed abridgment was taken from the regulations of Trajan and Hadrian; and the legion, as he describes it, cannot suit any other age of the Roman empire.]
[Footnote 43: Vegetius de Re Militari, l. ii. c. 1. In the purer age of Caesar and Cicero, the word miles was almost confined to the infantry. Under the lower empire, and the times of chivalry, it was appropriated almost as exclusively to the men at arms, who fought on horseback.]
[Footnote 44: In the time of Polybius and Dionysius of Halicarnassus, (l. v. c. 45,) the steel point of the pilum seems to have been much longer. In the time of Vegetius, it was reduced to a foot, or even nine inches. I have chosen a medium.]
[Footnote 45: For the legionary arms, see Lipsius de Militia Romana, l. iii. c. 2 - 7.]
[Footnote 46: See the beautiful comparison of Virgil, Georgic ii. v. 279.]
[Footnote 47: M. Guichard, Memoires Militaires, tom. i. c. 4, and Nouveaux Memoires, tom. i. p. 293 - 311, has treated the subject like a scholar and an officer.]
[Footnote 48: See Arrian's Tactics. With the true partiality of a Greek, Arrian rather chose to describe the phalanx, of which he had read, than the legions which he had commanded.]
[Footnote 49: Polyb. l. xvii. (xviii. 9.)]
The cavalry, without which the force of the legion would have remained imperfect, was divided into ten troops or squadrons; the first, as the companion of the first cohort, consisted of a hundred and thirty-two men; whilst each of the other nine amounted only to sixty-six. The entire establishment formed a regiment, if we may use the modern expression, of seven hundred and twenty-six horse, naturally connected with its respective legion, but occasionally separated to act in the line, and to compose a part of the wings of the army. ^50 The cavalry of the emperors was no longer composed, like that of the ancient republic, of the noblest youths of Rome and Italy, who, by performing their military