There are a couple of good books on the Hun-Roman relationship if you want to learn more about that era:

The End of Empire is a more casual read: https://www.amazon.com/End-Empire-Attila-Fall-Rome/dp/039333...

The Huns by EA Thompson is older but as far as I know one of the canonical works: https://www.amazon.com/Huns-Thompson/dp/0631214437%3FSubscri...

Another fun fact: Attila (aka King Etzel) assists the protagonist Kriemhild, widow of Siegfried, in the medieval saga "The Song of the Niebelungs"