Although the Baron Daum household was a hereditary appointed Baron household with their work mostly related to the military, their employment was to manage any kind of rivers and forests in the vicinity of the royal capital.
Even though it gives the feeling of being far apart from being a military task, those are usually places where no people live and thus invite refugees and such to settle down there, criminals, who committed offences in places where people live, to take refuge in there and poacher to make a regular appearance there.
Their work is containing the arrest and removal of such people upon discovery.
Because there also are occasional fights, the work is falling under the jurisdiction of the military, it seems.