Army (usually one per state)
Division - 2 brigades
Each brigade by standard has a pioneer battalion and a pair of dragoon and light cavalry squadrons for foraging, reckoning, escorting duties.
Pioneer battalion's crew is 45 grenadiers and 75 field workers, 15/25 making up an operative company. They can build defense lines, palings, bridges, trenches etc., repair buildings, set up artillery depots.
*Dragoons, considered as mounted foot soldiers, are organized into battalions when under direct command of a Brigade's HQ.