[150-141 B.C.]
While Rome was engaged in war with Carthage, the Lusitanians resumed their inroads under the conduct of the gallant Viriathus, who had escaped from the massacre of Galba. No Roman general could gain any positive advantage over this indefatigable enemy, and in the year 143 B.C. the war assumed a much more serious aspect. The brave Celtiberian tribes of Numantia and its adjacent districts again appeared in the field. For several years we find two Roman commanders engaged in Spain, as before the treaty of Gracchus: one opposed to the Numantians and their Celtiberian allies in the north, the other carrying on an irregular warfare against Viriathus and the Lusitanians in the south.
The conduct of the Celtiberian War was committed to Q. Metellus Macedonicus, who had been elected consul for the year 143. He remained in command for two years, and was so successful in his measures that by the close of the second campaign he had compelled the enemy to shut themselves up in their strong cities. But he was disappointed, as in Greece, by finding anticipated triumph snatched from his grasp by Q. Pompeius, consul for the year 141 B.C.
Pompeius and his successors could make no impression upon the Numantians. Nay, C. Hostilius Mancinus, consul for the year 137, suffered a memorable reverse. Mancinus set out for his province amid general alarm, excited by the unfavourable omens at his inaugural sacrifices. He was attended as quæstor by young Ti. Gracchus, who had already distinguished himself at the siege of Carthage. Mancinus found the army before Numantia in a state of complete disorganisation, and deemed it prudent to retreat from his position in front of that city. The Numantians pursued and pressed him so hard that he was obliged to entrench himself in an old camp, and sent a herald with offers to treat on condition that his army should be spared. The enemy consented, but only on the understanding that young Gracchus was to make himself responsible for the execution of the treaty. Articles of peace were accordingly signed by Mancinus himself, with Gracchus and all the chief officers of the army.
[141-140 B.C.]
Before we notice the sequel of the famous Treaty of Mancinus, it will be well to follow the Lusitanian War to its conclusion.
Juno
(From a statue in the Vatican)
Here also the fortune of Rome was on the decline. Q. Fabius Servilianus was surprised by Viriathus in a narrow defile, and so shut up that escape was impossible. The Lusitanian captain offered liberal terms, which were gladly accepted by the proconsul. This peace was approved by the senate, and Viriathus was acknowledged as the ally of Rome.