| A | B |
|---|
| legio | a unit of soldiers, about 5,000 men |
| centurio | leader of a century |
| primus pilus | senior centurion of the legion |
| optio | assisted the leader of a century |
| signifer | the standard-bearer |
| tribunus laticlavius (wide stripe) | junior officer from the noble class |
| tribunus angusticlavius (narrow stripe) | junior officer from the wealthy middle class |
| praefectus castrorum | commander of the camp |
| legatus | commander of the legion |
| equites | lower social class; originally cavalrymen |
