Senior officers:
1. Legatus legionus-overall legion commander
2. Dux-the leader
3. Tribunus laticlavius-Broad Band Tribune
4. Praefectus castrorum-the Camp Prefect
5. Tribuni angusticlavii-Narrow Band Tribune
Centurions:
1. Primus pilus-the senior centurion
2. Primi ordines-century commander of the first cohort
3. Primus prior-commander of each cohort's first century
4. The forward hastati-forward spears
5. The rear hastati-rear spears
6. The forward principes-the forward principle line
7. The rear principes-the rear principle line
8. The forward triarii-the forward third line
9. The rear triarii-the rear third line
"Roman Legion." Wikipedia, the Free Encyclopedia. Web. 23 Mar. 2010. http://en.wikipedia.org/wiki/Roman_legion.
Roman Legion On Attack. Digital image. Wikimedia Commons. Web. 23 Mar. 2010. http://commons.wikimedia.org/wiki/File:Roman_legion_at_attack.jpg.