Example image of eyePlorer eyePlorer map for 'Blitzkrieg': Force concentration Headline Military doctrine Interwar period Invasion of Poland (1939) Battle of France Soviet Union Ardennes Steppe Circa Operation Barbarossa Revolution in Military Affairs Operation Tactic World War II Fifth column Strategic depth Captain (land) University of Oxford Basil Liddell Hart Nazi Germany Matthew Cooper Richard Overy James Corum World War I Fortification Maginot Line Jew Marxism Paris Schlieffen Plan Balkans Campaign Foreign policy Wehrmacht Heavy bomber Kriegsmarine Strategic bombing French Army Prussia Unification of Germany Helmuth von Moltke the Elder Air force Treaty of Versailles Troop German General Staff Truppenamt Eastern Front (World War I) Alfred von Schlieffen Carl von Clausewitz Hans von Seeckt