Aerational
Regular
I don't know if this behavior just hasn't be added in, or if it was purposely left out to force more field battles, but it's silly for nobles and small armies to not use fortified locations whenever possible.
I also think that once a noble party spots an army headed to siege a fief, they should go there and wait to help defend... maybe even form their own army if possible. Right now armies are very reactionary. They just sorta form, regardless of war or peace, and then look for something to do. Would be cool if they were formed more conditionally, like to stop an invading army, or to siege a fief that's been thoroughly scouted.
I also think that once a noble party spots an army headed to siege a fief, they should go there and wait to help defend... maybe even form their own army if possible. Right now armies are very reactionary. They just sorta form, regardless of war or peace, and then look for something to do. Would be cool if they were formed more conditionally, like to stop an invading army, or to siege a fief that's been thoroughly scouted.