Plug
Warlord
If an enemy Civ sends a defended settler through your territory us your obsolete units to block its path. Three units can stop it going any further in its desired direction. Five units can redirect it back to it's borders. This is useful if you do not have enough units to make a complete wall.
Also, if you have nearby cities you can use them with your obsolete units to block the AI path, like an immobile unit.
If the AI has more than one defended settler you may need more units. At least three for each settler to be safe.
Also, if you have nearby cities you can use them with your obsolete units to block the AI path, like an immobile unit.
If the AI has more than one defended settler you may need more units. At least three for each settler to be safe.