I've added a new division command:

ORDER <division> BLOCK <direction>
- Have your division prevent adventurer's from moving past your troops,
forming a blockade. Your division must be fortified first and you
cannot perform this on claimed foreign land.
- Officers of your militia and those that are following will be able
to move past the division without issue.
- In order to cease blocking a direction, you must have your division
move out and give up their fortifications.

Do note, I've left it a little unwieldy to make sure people don't use it purely for group combat. You can still evade past it with the usual skills.

Penned by my hand on Gosday, the 15th of Niuran, in the year 503 MA.