The interest which would be naturally felt by such an encounter, was increased very much by the strong contrast that was observed in the appearance of the warriors. Romulus was very young, and though tall and athletic in form, his countenance exhibited still the expression of softness and delicacy characteristic of youth. Acron, on the other hand, was a war-worn veteran, rugged, hardy, and stern; and the throngs of martial spectators that surrounded the field, when they saw the combatants as they came forward to engage, anticipated a very unequal contest. Romulus was nevertheless victorious. As he went into the battle, he made a vow to Jupiter, that if he conquered his foe, he would ascribe to the god all the glory of the victory, and he would set up the arms and spoils of Acron at Rome, as a trophy sacred to Jupiter, in honor of the divine aid through which the conquest should be achieved. It was in consequence of this vow, as the old historians say, that Romulus prevailed in the combat. At all events, he did prevail. Acron was slain, and while Romulus was stripping the fallen body of its armor on the field, his men were pursuing the army of Acron, for the soldiers fled in dismay toward their city, as soon as they saw that the single combat had gone against their king. Cænina was not in a condition to make any defense, and it was readily taken. When the city was thus in the power of Romulus, he called the inhabitants together, and said to them, that he cherished no hostile or resentful feelings toward them. On the contrary, he wished to have them his allies and friends, and he promised them, that if they would abandon Cænina, and go with him to Rome, they should all be received as brothers, and be at once incorporated into the Roman state, and admitted to all the privileges of citizens. The people of Cænina, when the first feelings of terror and distress which their falling into the power of their enemies naturally awakened, had been in some measure allayed, readily acquiesced in this arrangement, and were all transferred to Rome. Their coming made a great addition not only to the population and strength of the city, but vastly increased the celebrity and fame of Romulus in the estimation of the surrounding nations. This victory over Acron, and the annexation of his dominions to the Roman commonwealth, are considered of great historical importance, as the original type and exemplar of the whole subsequent foreign policy of the Roman state;--a policy marked by courage and energy in martial action on the field, and by generosity in dealing with the conquered; and which was so successful in its results, that it was the means of extending the Roman power from kingdom to kingdom, and from continent to continent, until the vast organization almost encircled the world.