The Truppenamt or 'Troop Office' was the cover organisation for the German General Staff from 1919 through until 1935 when the General Staff of the German Army (Heer) was re-created. This subterfuge was deemed necessary in order for Germany to be seen to meet the requirements of the Versailles Treaty. It completely revised German tactical and strategic doctrine and thereby conserved, re-energised and unified the military thinking and capability of the Reichswehr, later to become the Wehrmacht.