Thank you HD, and yes it seems to tell the quantity instead of quality. The strong skeletal force I encountered last had 19 members but the skeletons fall apart from 1 max 2 hits since they had no armor.
Also would suggest that Overhype gives them a buff for resistance against piercing weapons like arrows spears etc. and maybe a debuff for crushing weapons like maces. The usual stuff. They have a cool damage art but since mostly die from the first blow its rare to see the damage model.
Would be great if all the jobs to find forts would give not only the direction but the terrain type of the fort. Sometimes takes ages to find them.