Laurence of Arabia Veteran Nov 21, 2005 #2 You need to be no more than five levels below the troop you are upgrading to.
Khamos Recruit Nov 21, 2005 #3 So basically, once you get to lvl 19, I believe you can upgrade Horseman to Knights, and so you're able to upgrade all of your units.
So basically, once you get to lvl 19, I believe you can upgrade Horseman to Knights, and so you're able to upgrade all of your units.