Battle of the Catalaunian Plains
In the early 5th century AD, large groups of peoples left the Middle Danube region, including the groups who crossed the Rhine in 405, many of whom eventually reached Iberia. Others crossed the Danube, like the forces of Radagaisus, who invaded Italy. During this period, the Huns and their allies begin to be found in this same area instead, having crossed the Carpathians from the east. By 450 AD, the Heruli were firmly part of the Hunnic empire of Attila. The Gepids, Rugi, Scirii and many Goths, Alans and Sarmatians were also part of Attila's empire. They were among the peoples who are reported as having fought for Attila at the Battle of the Catalaunian Plains.