If you attach a great general to a unit, you can take a promotion called "Leadership" which causes that unit to gain double xp.
I tried to fiddle around with this abit, because I kind of think it's a worthless promotion. (One less useful promotion now, to possibly gain more usefull promotions waaaaaay later.)
One idea was that it could speed up the arrival of the next great general.
But it doesn't seem like thats the case! If a unit with leadership gains 2+2 xp, only 2xp is added toward great general arrival.
I tried to fiddle around with this abit, because I kind of think it's a worthless promotion. (One less useful promotion now, to possibly gain more usefull promotions waaaaaay later.)
One idea was that it could speed up the arrival of the next great general.
But it doesn't seem like thats the case! If a unit with leadership gains 2+2 xp, only 2xp is added toward great general arrival.