Here's why it's called that:
* Origin: The song was originally called "Chant de guerre pour l'armée du Rhin" (War song for the Army of the Rhine).
* Popularization: It gained its name after being sung by volunteers from Marseille who marched to Paris in 1792 during the French Revolution.
* Official Anthem: It became the official anthem of France in 1795.
So, while "La Marseillaise" is a literal translation of the name, it actually refers to a specific historical event and a song deeply tied to French national identity.