Side changing is like capturing, but players can only do it to units
that they control. The action is change-side
, and you enable by
setting acp-to-change-side
to 1 or more. This will also enable
side changing for units that cannot normally act.
Side changing is especially useful for alliances in multi-player games, so it should usually be enabled. On the other hand, it should not be too cheap; you should consider what side changing really means in the game's context.
For instance, even in the close British/American alliance during WWII, armies never actually changed sides; British ground units were always British, and American ground units always American. On the other hand, ships and bases could be traded back and forth with only a cost in time and expense.