How do i change unit sizes

[Uesugi Kenshin]

To be a bit more specific go to options, then go to video settings or options (not sure which word is used) then click on the advanced options button. Go to unit size and switch it to your prefered size, basic infantry in Large is 80, Huge is 160, I don't know what either tiny or small are as I have never used them.

[Crusader4thepeople]

Thanks i already found it

[Doug-Thompson]

I'd suggest toning down the other graphics details if you're in a full campaign game.

You have the option of leaving the other options high through most of the game and toning the graphics down when the empire gets huge.