In the series of struggles with Carthage which resulted in putting Rome in a position enabling her eventually to win the dominion of the ancient world, the issue was to be decided on the water. Carthage was essentially a maritime state. The foundation of the city was effected by a maritime expedition; its dominions lay on the neighbouring coast or in regions to which the Carthaginians could penetrate only by traversing the sea. To Carthage her fleet was 'all in all': her navy, supported by large revenues and continuously maintained, was more of a 'regular' force than any modern navy before the second half of the seventeenth century. The Romans were almost without a fleet, and when they formed one the undertaking was ridiculed by the Carthaginians with an unconcealed assumption of superiority. The defeat of the latter off Mylæ, the first of several, came as a great surprise to them, and, as we can see now, indicated the eventual ruin of their city. We are so familiar with stories of the luxury and corruption of the Romans during the decline of the empire that we are likely to forget that the decline went on for centuries, and that their armed forces, however recruited, presented over and over again abundant signs of physical courage and vigour. The victory of Stilicho over Alaric at Pollentia has been aptly paralleled with that of Marius over the Cimbri. This was by no means the only achievement of the Roman army of the decadence. A century and a quarter later--when the Empire of the West had fallen and the general decline had made further progress--Belisarius conducted successful campaigns in Persia, in North Africa, in Sicily, and in Italy. The mere list of countries shows that the mobility and endurance of the Roman forces during a period in which little creditable is generally looked for were not inferior to their discipline and courage. Yet they met with disastrous defeat after all, and at the hands of races which they had more than once proved themselves capable of withstanding. It could not have been because the later Roman equipment was inferior, the organisation less elaborate, or the training less careful than those of their barbarian enemies.