Guild Wars 2

I could have sworn that in The Ghosts of Ascalon I read that she was a Legionnaire, however in the Crusader Arevir Soulhammer skill challenge the correct answer is
Tribune. Which is official lore?

A few NPCs incorrectly say that she was a Tribune before she established the Vigil, however she was a Legionnaire.

As WoA said, she was indeed a Legionnaire. She was serving under a Centurion at the time Kralkatorrik awoke. In GoA and various interviews, she’s called Legionnaire – I believe even herself says she was a Legionnaire. Only 2 NPCs call her a former Tribune (which is a higher rank than Centurion).