Just wanted to check, but cities can take just one token, other than Constantinople, which can take three.
I ask as I was wondering about what happens when you play a card that allows you to place additional tokens. I saw that, if you place knights or rooks, you repress tokens that are already in the city, so I assme that you can only have a maximum of one unit per city no matter what and that units added by card cannot take you over this limit?
Why would you do this? I guess the repressed tokens come into play somehow, I am still just learning the rules.
Correct, one token per city, except Constantinople. Why do this? To add suppressed tokens to an empire, making future conspiracies and pleasant revolts more likely to succeed. Another reason would be to replace knights with rooks, making that empire less capable of conducting effective campaigns.