Sertorius (17.7-18.1)

Therefore, after holding out with difficulty for two days, on the third day they surrendered, thereby adding not so much to the power as to the fame of Sertorius, since by his skill he had subdued what could not be taken by arms.

Well, then, as long as he carried on the war with Metellus as his antagonist, he was thought to be successful for the most part because, owing to great age and natural slowness, Metellus could not cope with a man who was bold and headed a force composed of robbers rather than soldiers; but when Pompey also crossed the Pyrenees and became his antagonist,[*] and each of them had offered and accepted every test of a general’s powers, and Sertorius had the advantage in counter-planning and watchfulness, then indeed it was noised abroad as far as Rome that he was the ablest general of his time in the conduct of a war.