For the first winter (270–271) of his reign, Aurelian was in Rome. Felicissimus, a "rationalis" (an official in the mint) in Rome started a rebellion in the city, possibly in this first winter. Felicissimus did not have success. In 271 Aurelian was Roman consul for the first time. That year, he undertook military campaigns against the Vandals, Juthungi, and Sarmatians. Aurelian got the name because of his victories over Germanic peoples. He was again in Rome for his second winter (271–272) as emperor. It was at this time that the Romans began to build new defensive walls around the city: the Aurelian Walls.