Double Experience (Units)
This modifies a single file, halving the amount of experience required to gain an echelon.
It is only incompatible with mods that change what experience point thresholds units gain echelons at. It will work with "Traits, Talents and Toadies".
Goes well with Double XP (campaign)
A little rating goes a long way 😉
also try:
Eagle for First Cohort
Historical Eagle Cohort
More Dust
Better Spacing
Smaller Projectile Trails
Badass Units
Badass Unit Faction Add-on
City Names
Purple/Black Rome
Better Edicts