Not really.
The fortified cities remain unbreached in most cases.
The undead and monsters are not generally capable of taking out a city defense...unless a lot of work has been done in previous weeks to reduce the walls and militia by constant wave attacks.
Which actually has been happening, and which is why some of the cities have fallen to this latest round of assaults...but those that remain should hold I think.
Unless the undead and monsters begin moving as one in large groups again as they did when they assaulted the Vales. That would be unfortunate...