During the Hunnic Invastion of 451 Flavius Aetius ended the invastion of a ruler who was the leader of the Huns, Alans and what other groups of people?
Flavius Aetius:  Notably, he mustered a large Roman and allied ("foederati") army to stop the Huns in the Battle of the Catalaunian Plains, ending the devastating Hunnic invasion of Attila in 451. Attila:  circa 406–453), frequently referred to as Attila the Hun, was the ruler of the Huns from 434 until his death in March 453.
i don't know