Forgotten Tales

I have seen, that when mages use spells only, the gaurds wont set the clan buildings on auto against that clan....Why? Also can guards hp improve with each barrack lvl?

If someone without a clan kills your guards your buildings do not protect you and kill them. Anyone without a clan name can kill guards without buildings firing... this is why Barracks are not practical anyone high lv unclaned can kill your guards