Unit abbreviations

[Luca]

I have lost probably the previous link on a topic that already treated this.<br>
Is there a reference, better on line, about unit abbreviations?<br>
For example:<br>
<br>
Centurio Hastatus Prior = C H PR ?<br>
Contubernium VI?<br>
<br>
etc. <p></p><i></i>