Nominations for a "storied" fighting unit

Thinking along the lines of French Foreign Legion, Ghurkas, or lesser known Italian Arditi (with their motor 'I don't give a F---) or the Bersiglieri. Royal Guard could qualify since they've "never been defeated" but Royal Guard encompasses the entire army for Clarion and I'm thinking on a smaller scale; a named unit that is part of a larger formation or perhaps a mercenary company. Unit has to have a name, a story, and a place e within the setting. Mercenary companies are acceptable for this exercise even though I'm not that interested in them - likely others are.