Using my Language Latin skill of 0, how about Pax Romana Astris. Even if there is or isn't peace taking up their time.
Roman ranks of the Imperial age:
*Legionary - Legionaire is in the French foreign legion.
*Principales
*(Signifer) - Century standard bearer
*(Aquilifer) - Legion standard bearer
*Optio - Adjutant to the Centurion
*Centurion - several grades from commander of the sixth century of the tenth cohort through pilus prior, primi ordines and primus pilus.
*praefectus castorum - Legates Adjutant
*Tribune - usually a political posting
*Legate - commander of the legion
triarii are a type of soldier from the earlier republic deployed behind the hastati and principes.