The Orders of Chivalry (fan expansion to Carcassonne) (2010)

If the player places a chivalry tile onto a city that he has occupancy in, he may exchange one follower of his own colour for another of his own colour. For example, a Yellow regular Knight is deployed in a city. On his turn, Yellow draws and lays a chivalry tile that extends his already occupied city. He may now exchange the regular Knight in this city for another legal follower.
1,
2 It is irrelevant how many players occupy the city or who has the majority in that city at the time of exchange. An exchange occurs instead of ‘moving the wood’
3 and must take place at the time of laying the chivalry tile.
The idea of exchange is one of promotion or demotion. Knights who served their position well might be honoured to a higher Order. Those who neglected their duties could be stripped of their title.

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