Hmmm... yes that is an idea. and if there is a hospital it would probably be quite fortified in its own right. I mean if you're going to bother looking after your wounded in the middle of a war then you're going to want to know that all that effort won't just go to waste the moment the enemy breach the walls again!

I'm going to think some more about the story behind the Ward of Erahum, and I will update the initial post once I've made a few more decisions about what's there and why

Defence will have played an important part of life in the past, even if there is peace in the present time, so there might be quite a lot of evidence to suggest several incursions and several stages of rebuilding.