Campsite

A facility to hire foreign soldiers or mercenaries. The hired soldiers guard the area around the campsite.
Overview
The 
All mercenaries hired from the 
When planning around mercenaries, it is worth remembering that this attack bonus is separate from the bonuses tied to the mercenary’s troop type. In practice, that means the 
Official description
A facility to hire foreign soldiers or mercenaries. The hired soldiers guard the area around the campsite.