When an Exile accepts citizenship, how many of the winner's warbands replace the Exile's warbands?

Question

Accepted Answer

One is enough. A single warband from the winner marks each ruled site, and the rest go back to supply anyway, so the count changes nothing in practice. The ruled sites simply join the new Empire.

Oath: Chronicles of Empire & Exile

When an Exile accepts citizenship, how many of the winner's warbands replace the Exile's warbands?