11-4. The Imperial Vandal-Roman War
The result of this lethargy on the part of both empires was that the Vandals were in a position to seize the rest of the African provinces belonging to Rome; even the Moorish tribes seem to have acknowledged the Vandal sovereignty without positive resistance. Moreover Gaiseric made an alliance with the Spanish Sueves who had invaded and plundered the province of Tarraconensis (456) which belonged to the Roman Empire. At the same time a Vandal fleet laid waste Sicily and the bordering coast territory of South Italy. It is true that on land the Romans succeeded, under Ricimer, in defeating a hostile division at Agrigentum, as well as one at sea in Corsican waters, but these successes had no lasting effect, for the Vandals still commanded the Mediterranean as before. The populace, furious from the continued famine, compelled Avitus to fly to Gaul, where he died at the end of the year 456.
His successor on the imperial throne, Majorian (from 1 April 457), at once began in real earnest to consider schemes for the destruction of the Vandal Empire. It might be looked upon as auspicious that not long after his accession a body of Roman troops succeeded in defeating a band of Vandals and Moors, led by Gaiseric's brother-in-law, who were engaged in desultory plunder in South Italy. The Emperor himself marched with a large army, which he had not got together without difficulty, from Italy to Gaul, in November 458, in order to exact recognition of his authority from the Visigoths and Burgundians who had seceded from Rome, and his success in this task at once rendered nugatory Gaiseric's conclusion of a Visigoth, Suevian, and Vandal alliance.
In May 460 Majorian crossed the Pyrenees and moved upon Zaragoza to Carthagena in order to cross from thence to Africa. The force that had been raised was so impressive that the king of the Vandals did not feel himself a match for it and sent messengers to sue for peace. When peace was refused he laid waste Mauretania and poisoned the wells in order to delay the advance of the enemy as much as possible. The Roman attack, however, could not be carried out, for the Vandals managed by means of treachery to seize a great number of the Roman ships which were lying outside the naval harbour near the modern Elche Majorian had no alternative but to make peace with Gaiseric; his authority, however, was so shaken by this failure that he was divested of his dignity by Ricimer in August 461.
The result of the elevation of a new Emperor, Libius Severus, was that Gaiseric once more declared the agreement he had but just made to be at an end. He again began his naval attacks on Italy and Sicily. The embassies sent to him by the West-Roman as well as by the Byzantine Emperor Leo had no further result than the deliverance of Valentinian's widow and her daughter Placidia, for he had previously given the elder princess Eudoxia to his son Huneric in marriage. The king received as ransom a part of the treasure of Valentinian. It also seems that an agreement was come to with the East-Roman Empire. On the other hand the hostile relations with West-Rome continued, for Ricimer refused to comply with Gaiseric's principal demand, the bestowal of the imperial throne of the West upon Olybrius, Huneric's brother-in-law.
Every year in the beginning of spring detachments of the Vandal fleet left the African harbours to infest the Mediterranean coasts. Unprotected places were plundered and destroyed, while the garrisoned places were carefully avoided. The danger threatening the Western Empire reached its height when the commander Aegidius, who maintained an independent position in Gaul, made an alliance with Gaiseric and prepared to attack Italy in conjunction with him. This scheme was not carried out, for Aegidius died prematurely (464), but the situation still remained dangerous.
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