When he succeeded his uncle Justin I, emperor of the Eastern Roman Empire, Justinian (518-527) began reforms in the field of economy and army. To get everything ready for the upcoming reconquest of parts of the Western Roman Empire. Procopius is a key person for us for this period because through him we learn about the events of that time. Justinian had a local Roman population and barbarians in his amy. After the Eernal Peace of 532 with Persia, everything was ready for the beginning of the Reconquista. In 533, the already tried and tested gneral Belizar sailed for Africa with 16,000 troops to conquer the Vandal Kingdom. The Vandals were finally defeated at the Battle of Tricamerum in 533, marking the end of their Kingdom. In 535, Belisarius set out on a campaign against the Gothic Kngdom. This long and exhausting war full of upheavals will last until 555. In that war the most important people were Belizar, Vittiget, Totila and finally Narzes. Conflicts also took place in Dalmatia at that time against the Goths. In 550, Justinian sent a smaller navy to the Iberian Peninsula, because at that time a civil war was raging among the Vandals. Military operations lasted until 554, and Justinian's reconquest was completed with the southern part of the Iberian Peninsula, now firmly being in the Byzantine hands.