This exploit, then, was accomplished by the Goths on the third day after they were repulsed in the assault on the wall. But twenty days after the city and harbour of Portus were captured, Martinus and Valerian arrived, bringing with them sixteen hundred horsemen, the most of whom were Huns and Sclaveni[134] and Antae,[135] who are settled above the Ister River not far from its banks. And Belisarius was pleased by their coming and thought that thenceforth his army ought to carry the war against the enemy. On the following day, accordingly, he commanded one of his own bodyguards, Trajan by name, an impetuous and active fighter, to take two hundred horsemen of the guards and go straight towards the enemy, and as soon as they came near the camps to go up on a high hill (which he pointed out to him) and remain quietly there. And if the enemy should come against them, he was not to allow the battle to come to close quarters, nor to touch sword or spear in any case, but to use bows only, and as soon as he should find that his quiver had no more arrows in it, he was to flee as hard as he could with no thought of shame and retire to the fortifications on the run. Having given these instructions, he held in readiness both the engines for shooting arrows and the men skilled in their use. Then Trajan with the two hundred men went out from the Salarian Gate against the camp of the enemy. And they, being filled with amazement at the suddenness of the thing, rushed out from the camps, each man equipping himself as well as he could. But the men under Trajan galloped to the top of the hill which Belisarius had shewn them, and from there began to ward off the barbarians with missiles. And since their shafts fell among a dense throng, they were for the most part successful in hitting a man or a horse. But when all their missiles had at last failed them, they rode off to the rear with all speed, and the Goths kept pressing upon them in pursuit. But when they came near the fortifications, the operators of the engines began to shoot arrows from them, and the barbarians became terrified and abandoned the pursuit. And it is said that not less than one thousand Goths perished in this action. A few days later Belisarius sent Mundilas, another of his own bodyguard, and Diogenes, both exceptionally capable warriors, with three hundred guardsmen, commanding them to do the same thing as the others had done before. And they acted according to his instructions. Then, when the enemy confronted them, the result of the encounter was that no fewer than in the former action, perhaps even more, perished in the same way. And sending even a third time the guardsman Oilas with three hundred horsemen, with instructions to handle the enemy in the same way, he accomplished the same result. So in making these three sallies, in the manner told by me, Belisarius destroyed about four thousand of his antagonists.But Vittigis, failing to take into account the difference between the two armies in point of equipment of arms and of practice in warlike deeds, thought that he too would most easily inflict grave losses upon the enemy, if only he should make his attack upon them with a small force. He therefore sent five hundred horsemen, commanding them to go close to the fortifications, and to make a demonstration against the whole army of the enemy of the very same tactics as had time and again been used against them, to their sorrow, by small bands of the foe. And so, when they came to a high place not far from the city, but just beyond the range of missiles, they took their stand there. But Belisarius selected a thousand men, putting Bessas in command, and ordered them to engage with the enemy. And this force, by forming a circle around the enemy and always shooting at them from behind, killed a large number, and by pressing hard upon the rest compelled them to descend into the plain. There a hand-to-hand battle took place between forces not evenly matched in strength, and most of the Goths were destroyed, though some few with difficulty made their escape and returned to their own camp. And Vittigis reviled these men, insisting that cowardice had been the cause of their defeat, and undertaking to find another set of men to retrieve the loss after no long time, he remained quiet for the present; but three days later he selected men from all the camps, five hundred in number, and bade them make a display of valorous deeds against the enemy. Now as soon as Belisarius saw that these men had come rather near, he sent out against them fifteen hundred men under the commanders Martinus and Valerian. And a cavalry battle taking place immediately, the Romans, being greatly superior to the enemy in numbers, routed them without any trouble and destroyed practically all of them.

And to the enemy it seemed in every way a dreadful thing and a proof that fortune stood against them, if, when they were many and the enemy who came against them were few, they were defeated, and when, on the other hand, they in turn went in small numbers against their enemy, they were likewise destroyed. Belisarius, however, received a public vote of praise from the Romans for his wisdom, at which they not unnaturally marvelled greatly, but in private his friends asked him on what he had based his judgment on that day when he had escaped from the enemy after being so completely defeated,[136] and why he had been confident that he would overcome them decisively in the war. And he said that in engaging with them at the first with only a few men he had noticed just what the difference was between the two armies, so that if he should fight his battles with them with a force which was in strength proportionate to theirs,[137] the multitudes of the enemy could inflict no injury upon the Romans by reason of the smallness of their numbers. And the difference was this, that practically all the Romans and their allies, the Huns, are good mounted bowmen, but not a man among the Goths has had practice in this branch, for their horsemen are accustomed to use only spears and swords, while their bowmen enter battle on foot and under cover of the heavy-armed men. So the horsemen, unless the engagement is at close quarters, have no means of defending themselves against opponents who use the bow, and therefore can easily be reached by the arrows and destroyed; and as for the foot-soldiers, they can never be strong enough to make sallies against men on horseback. It was for these reasons, Belisarius declared, that the barbarians had been defeated by the Romans in these last engagements. And the Goths, remembering the unexpected outcome of their own experiences, desisted thereafter from assaulting the fortifications of Rome in small numbers and also from pursuing the enemy when harassed by them, except only so far as to drive them back from their own camps.