https://forums.totalwar.org/vb/showthread.php?t=94861

@Defiant
Yes they are Augustan units and yes they would only be available in the campaign game once you get the appropriate Augustan reform so you would still have the Camillian, Polybian, and Marian reforms to proceed through before you aquired these units. They are available in multiplayer (custom battles) as well.

As to using ALX.EXE (Alexander), the above link brings you to the Alexander EB mod (within this forum)which explains how to activate EB using the Alexander executable (ALX.EXE). It provides a download which will allow you to play immediately or you can modify the required files manually (detailed directions are included in the link). Once you modify the needed files, you can extract my mod into the folder where you have EB installed and you should be ready to kill the barbarian hordes! The mod is compatible with ALX.EXE and contains all but the permanent interloper fix. Good luck!