Following the Adolf Hitler's rise to power and creation of Wehrmacht in mid-1935, Gorn's unit was incorporated into the Army and he assumed command of 5th Company of the 3rd Motorcycle-Rifle-Battalion under Obertsleutnant Günther von Manteuffel in Bad Freienwalde. His battalion became a part of the 3rd Panzer Division and Gorn became more involved in Armoured warfare. He participated in the occupation of Sudetenland in October 1938 and German occupation of Czechoslovakia in March 1939.
