How can these units occupy the same title as mine?

[nanabo]

Hello, I am a Civ4 newbie playing my first game. Basically, I am trying to prevent the AI's units (a swordsman + spearman + settler) from advancing any further into what I believe is my territory by placing my horse archers in the gap between my cultural borders as you can see on the 1st screenshot. However, at the next turn, the AI moves its units to a tile occupied by one of my archers, as you can see on the 2nd screenshot. How is that possible? I thought that moving military units to a tile occupied by another civ's military unit will cause a war. How come it is not the case? How do I stop the AI from sneaking into this gap between my borders?

 

[Qactus]

In neutral territory you'd have to declare war in order to prevent that.
Within your own cultural borders you'd have the option to close borders (or not opening them in the first place) via diplomacy.

 

[nanabo]

In neutral territory you'd have to declare war in order to prevent that.
Within your own cultural borders you'd have the option to close borders (or not opening them in the first place) via diplomacy.

Thank you for your reply. This is actually news to me. I don't remember this rule neither from Civ4's Manual, nor from my previous experience with Civilization games (I may be wrong, but you cannot move your units into a tile occupied by someone else's units in, for example, Civ3, even not being at war with them, if I remember correctly). Will try to figure out how to stop the AI from advancing into this gap in some other way. Thank you!

 

[Qactus]

Well, I don't know about the difficulty level you play on or the year/turn it is in your screenshot, but usually I wouldn't be too concerned about Suleiman choosing a nice place for a city and settle it. The clue here is you already have your Horse Archers, which have the special power of turning those green cities into purple ones.

 

[danjuno]

Violence isn't answer, it's the question, and the answer is yes!