This 10th Legion barracks was located adjacent to Fallraen. Along with the Fallraen Mine Elevator, it was a crucial town asset. Considering that it was meant to house the town's defenders in safety, though, its location beyond the town gates was pretty much nonsensical.
Hostile wildlife overwhelmed both the barracks and the route to the mine in the days leading up to the call for the Townstones on the Peninsula. Eager though they were to re-arm in town, the heroes retrieving the Townstones grudgingly sidetracked into the barracks first and cleared out the unwanted guests.