A tent house (Telthus) or a regimental arsenal building was in use in Norway from the establishment of the regular army in 1628, and became common at the special exercise grounds.
After 1774 this location was changed in favour of special exercise or parade grounds, with annual musters of 12 days.
Ytre Valdreske Kompagni had an exercise or parade ground located close to Bagn Kirke, Sør-Aurdal municipality, down by the river.
Military change was rapid and extensive in Norway, modifying the army structure and increasing the fortification of the borders and strong points.
When the Empire attacked Danish possessions on the Baltic and in northern Germany, Christian IV of Denmark's troops joined, but were defeated by the army of the Catholic League.