Does this work for Imperator Augustus and Empire Divided campaigns?
Is it save game compatible?

@Cruze There is currently a mod on the steam workshop here that does exactly that and makes your armies 40 units. Just look up 40 unit.

Not in a proper way, no. There is this mod however called Guaranteed Major Factions:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=233589292&searchtext=guaranteed

It uses scripts to give autoresolve advantage to major factions. It says it's outdated but in reality it's not because it uses it's own scripts. Try it.

could you make this mod so only major factions benefitted?

I managed to partly fix that by making a garrison mod so cities aren't conquered THAT easily, but still happens sometimes. It's hardcoded I guess. I wish major AI factions had some advantage against other AI.

I agree, but my struggle of late is keeping minor powers small. I want to conquer Carthage's empire, I don't want Syracuse or the Arevaci to do it for me. But I'm running your mod now, so far, so good.

All factions! I never would give advantage to the player in my mods, game is easy enough already

does this help the player only? Or all factions?

Nah, it's hardoced in the TW engine

is it possible to change the current max of 20 units per army to 40, like in custom battles? (for the campaign)
i was wondering always about this one, it would be awesome!

Should be compatible with everything

what does this clash with?