When in Sicily his army was attacked by an army from Messena, the surprise of the attack caused heavy casualties. Pyrrhus takes a wound to the head, and retires from the front line at the behest of his men. A particularly large Sicilian comes out and challenges Pyrrhus to come out and fight him, if he is even still alive.
Pyrrhus is suddenly angered by this, so much so that he strides out in fury, covered in blood, and fells the guy with one stroke to the head. His manner and countenance was such that the rest of the attacking army lost their stomach for the fight, and Pyrrhus and his army continued unmolested.
Pyrrhus, in great anger, broke away violently from his guards, and, in his fury, besmeared with blood, terrible to look upon, made his way through his own men, and struck the barbarian on the head with his sword such a blow, as with the strength of his arm, and the excellent temper of the weapon, passed downward so far that his body being cut asunder fell in two pieces. This stopped the course of the barbarians, amazed and confounded at Pyrrhus, as one more than man; so that continuing his march all the rest of the way undisturbed
And beating a Macedonian champion in single combat, before his entire army. That would make-or-break a battle, it appears:
Pantauchus, in courage, dexterity, and strength of body, being confessedly the best of all Demetrius's captains, and having both resolution and high spirit, challenged Pyrrhus to fight hand to hand; on the other side Pyrrhus, professing not to yield to any king in valour and glory, and esteeming the fame of Achilles more truly to belong to him for his courage than for his blood, advanced against Pantauchus through the front of the army. First they used their lances, then came to a close fight, and managed their swords both with art and force; Pyrrhus receiving one wound, but returning two for it, one in the thigh and the other near the neck repulsed and overthrew Pantauchus, but did not kill him outright, as he was rescued by his friends. But the Epirots exulting in the victory of their king, and admiring his courage, forced through and cut in pieces the phalanx of the Macedonians, and pursuing those that fled, killed many, and took five thousand prisoners.
He was also first on the walls of the Carthaginian fortress of Eryx:
.The sign being given by sound of trumpet, he first scattered the barbarians with his shot, and then brought his ladders to the wall, and was the first that mounted upon it himself, and, the enemy appearing in great numbers, he beat them back; some he threw down from the walls on each side, others he laid dead in a heap round about him with his sword, nor did he receive the least wound, but by his very aspect inspired terror in the enemy; and gave a clear demonstration that Homer was in the right, and pronounced according to the truth of fact, that fortitude alone, of all the virtues, is wont to display itself in divine transports and frenzies