Page:The age of Justinian and Theodora (Volume 1).djvu/200

 mobility of cavalry was indispensable in order to deal effectively with such wary and reckless foes. Early in the fourth century the number and importance of the cavalry had increased to such an extent that they were relegated to a separate command: and the Master of the Horse was regarded as of superior rank to his colleague of the infantry. In the East, however, both branches of the service were soon combined under a single commander-in-chief; and henceforward the first military officers are entitled Masters of the Horse and Foot, or, collectively, of the Forces.

At the period I am writing about, the usual routine of a pitched battle is to range the infantry in the centre with large squadrons of cavalry on either flank. Both armies first exhaust their supply of missiles, after which a general engagement at close quarters ensues. By the aid of various evolutions, concealed reserves, and unexpected manœuvres, the opposing generals strive to take each other at a disadvantage, and victory rests with the most skilful or fortunate tactician. Single combats in the interspace between the two armies are not un-*