The civclopedia says: "A unit gets its first promotion when achieving 2 XPs. The second promotion requires 3 additional XPs (for a total of 5), the third 4 more XPs (10 total), etc."
Excuse me, but I'm very confused. Isn't 5+4=9?!
Excuse me, but I'm very confused. Isn't 5+4=9?!