I find this kinda frustrating, set up 4 walls place explosive by one walls. 3 of walls be destroyed only farthest one won’t be touched. Now basic stone wall have 7 k health.
Set up with 4 fence foundation put explosive in front of it. Only fence gets destroyed is one that had explosive in place front of it. You think the other two fences take at least 7k damage leaving it with 2k health. No they only take 1 point of damage.