- Lost due to battle with the Britons?
- Lost during the Bar Kokhba revolt?
- Lost during the Parthian War?
- Lost during a rebellion on the Danube?
- Lost in a battle in Cappadocia?
- The Legion was renamed/misspelled in later documents?
- Went native?
If your a history enthusiast, share your opinion. If not, tell us what you think anyway.