Marcellus (1.3-2.1)

who, in their youth, waged war with the Carthaginians for Sicily; in their prime, with the Gauls to save Italy itself; and when they were now grown old, contended again with Hannibal and the Carthaginians, and did not have, like most men, that respite from service in the field which old age brings, but were called by their high birth and valour to undertake leaderships and commands in war.

Marcellus was efficient and practised in every kind of fighting, but in single combat he surpassed himself, never declining a challenge, and always killing his challengers. In Sicily he saved his brother Otacilius from peril of his life, covering him with his shield and killing those who were setting upon him.