Origin of the war-cry "Eulalia" in Brian Jacques's Redwall series? In Brian Jacques's Redwall series, "Eulalia" is the traditional war cry of the badgers and hares of Salamandastron. It's also the title of one of the books in the series, but it's used throughout all books as a battle cry. **What is the origin of this war cry?** I'm interested in both "in-universe" answers (does it have any meaning in the world of the Redwall books, or how did it come to be the battle cry of Salamandastron) and "out of universe" answers (why did Brian Jacques choose this word to use as a war cry in his books, does it relate to either of the Saints Eulalia or any other real-world usage of the word).

According to Brian Jacques, as related in a live-action segment for the TV series:

> That was one of the Norse war cries, the Vikings, the sea-wolves, the Norsemen, and the Celts used to use it when they went into battle.

This is also stated in the Redwall FAQ:

> Eulalia is a Celtic/Norse battle cry which means Victory!!

This explanation has been noted to not match historical records, but it is the official answer from the author.