I've searched around, but I haven't found the answer to this question jumping out at me at all. I got my first Great General in Warlords the other day, and attached it to a unit. I distributed the XP, and I believe the upgrades that the unit I attached to all came from said XP, only the options were extended.
Now the unit I attached the General to still has the General icon in among the upgrade icons, only this one says 'free upgrades'. What does this mean? Does it mean that my unit got A free upgrade along with the XP bonus from when I first attached, and I just missed it? Does the icon just sit there to show you that this is the unit with the GG attached and actually 'free upgrades' means nothing? Does it in fact refer to the free XP I already distributed? Something else? I've so far had this unit promoted once more due to battles and haven't seen any evidence of 'free upgrades'.
Now the unit I attached the General to still has the General icon in among the upgrade icons, only this one says 'free upgrades'. What does this mean? Does it mean that my unit got A free upgrade along with the XP bonus from when I first attached, and I just missed it? Does the icon just sit there to show you that this is the unit with the GG attached and actually 'free upgrades' means nothing? Does it in fact refer to the free XP I already distributed? Something else? I've so far had this unit promoted once more due to battles and haven't seen any evidence of 'free upgrades'.
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