The camp was the base for the Army engineering regiment (Hærens ingeniørregiment). There were formerly a total of three military camps around Hønefoss: Hvalsmoen, Helgelandsmoen and Eggemoen.
The base was the central location for the Army's engineering unit (Hærens ingeniør enhet). Previously, there were three separate military installations near Hønefoss: Hvalsmoen, Helgelandsmoen and Eggemoen.