Unit size

[Simmons]

Basically you have to restart.

There are programs out there that can change unit size in a savegame file but that won't effect units already created they will stay the same size until you retrain them all and since the AI does not retrain you will have a massive advantage until the AI has replaced all its units.

Edit: I think program is called RomeSage don't know where to get it though I'm sure its not hard.

[jedispongee]

It's in twcenter.net in the tools/utilities section of the RTW downloads.

Basically all the units trained after you change it will be the new unit size, while existing units remain the same.

[Cheexsta]

Download RomeSage, it allows you to change the unit scale of a savegame. Haven't tried it myself, so I don't know of any other effects, but I'd imagine you can just retrain your current units to be back to full size.