There is no single documented source for this Viking call, and it circulates online as a generic war sound rather than a clip tied to one film, game, or historical recording. That flexibility is part of its appeal: creators use the same roaring horns and battle cries for fantasy edits, gaming montages, history videos, and comedy skits where a small moment needs to feel like an invasion. Because the sound reads instantly as a charge into battle, it has stayed popular as a shorthand for courage, chaos, and over-the-top confidence.