There was once, but they "mysteriously vanished" after half a day.
You mean
cured, surely?
I'm also thinking that Fort Joy probably isn't at the top of anyone's list of places they'd like to be posted and is probably the military's equivalent of being sent to the Eastern Front: there's no inclination to treat them well, no reason to do so as they're pretty much as trapped there as the prisoners, and it's fairly clear that the higher echelons are about as corrupt as it comes, so any resources they are given for repairs and accommodation and spent on vulgar paintings and trinkets.