Accurate Roman army

[Dodge_272]

What would be the most accurate composition of the roman army at the beginning of the game? And also, after the reforms?

[Arjos]

Check this guide made by Quintus Sertorius:
https://forums.totalwar.org/vb/showthread.php?101787-Quintus-Sertorius-Guide-to-Conduct-Becoming-of-a-True-Roman-(Redux-for-EB)