Hitler's Arctic War: The German Campaigns in Norway, Finland and the USSR 1940-1945 Jorgensen Christer Heftet / 2017 / Engelsk
Tank Warfare: Strategy and Tactics The Illustrated History of the Tank at War 1914-20 Jorgensen Christer Heftet / 2001 / Engelsk
Encyclopedia of the World's Special Forces Tactics, History, Strategy, Weapons Ryan, Mike Heftet / 2003 / Engelsk
