ive managed to get a inner stone wall and then having the wooden palisade as my outer..
then i created 6 units in between these walls.. and it appears theres no way out..
this design flaw means for me that if i want to move units i have to transfer them to an army then move them back to be able to move them outside town...
but during siege battles this means my flanks are open because i cannot move melee to where the enemy wants to make a hole in the wall.
Currently there is just one gate in this base and thats at the bridge