1940
- Operation Mittelmeer 1940–1941 - German reinforcement of the Italian Regia Aeronautica in the Mediterranean
- Operation Juno 1940 - German naval operation against British warships off Narvik, Norway
- Operation Weserübung 1940 - German invasion of Denmark and Norway
- Operation Weserübung Nord 1940 - German attack on Trondheim and Narvik, Norway; part of Operation Weserübung
- Operation Weserübung Sud 1940 - German attack on Bergen, Kristiansand, and Oslo, Norway; part of Operation Weserübung
- Operation Karlshafen 1940 - German attack against Kristiansand, Norway; part of Operation Weserübung
- Operation Naumburg 1940 - German landing at Narvik, Norway
- Operation Nienburg 1940 - German action at Narvik, Norway; part of Operation Weserübung
- Operation Nord 1940 - German planned invasion of Denmark and Norway; later renamed to Operation Weserübung
- Operation Nordmark 1940 - German attacks on Allied North Sea convoys between Britain and Scandinavia
- Operation Oldenburg 1940 - German attack on Oslo, Norway; part of Operation Weserübung
- Operation Stadthagen 1940 - German attack on Stavanger, Norway; part of Operation Weserübung
- Operation Wildente 1940 - German naval and air operation in Trondheim, Norway
- Operation Altenbeken 1940 - German attack on Adalsnes, Norway; part of Operation Weserübung
- Operation Altona 1940 - German attack on Arendal, Norway; part of Operation Weserübung
- Operation Biene 1940 - German attack on Alsten Island and Sandnessjøen, Norway; part of Operation Weserübung
- Operation Bremen 1940 - German attack in Norway; part of Operation Weserübung
- Operation Büffel 1940 - German air operation to relieve troops in Narvik, Norway
- Operation Hartmut 1940 - German submarine operations in Norwegian territorial waters
- Fall Rot 1940 - German invasion of France
- Operation Gneisenau 1940 - German diversionary attack on two bridges on the French-German border; part of Fall Grün
- Operation Granit 1940 - German airborne action on Belgian Fort Eben-Emael
- Operation Stahl 1940 - German commando operation to occupy a bridge near Veldwezelt, Belgium
- Operation Tiger 1940 - German offensive on the northern sector of the Maginot Line; part of Fall Rot
- Operation Trojanisches Pferd 1940 - German operation to secure the bridge near Nijmegen in the Netherlands
- Operation Trondheim 1940 - German movement across the Albert Canal against Fort Eben-Emael in Belgium
- Operation Scharnhorst 1940 - German deceptive attack in the Saarbrücken region; part of Fall Grün
- Fall Grün 1940 - German attacks against the Maginot Line on the French-German border in conjunction with Fall Braun
- Fall Gelb 1940 - German invasion of the Low Countries of Belgium, the Netherlands, and Luxembourg
- Operation N 1940 - German airborne operation at Namur, Belgium
- Operation Nebelübung 1940 - German planned invasion of Liège, Belgium; part of Fall Gelb
- Operation Niwi 1940 - German troop deployment in Belgium; part of Fall Gelb
- Operation B 1940 - German attack on the Maginot Line on the German-French border; part of Fall Rot
- Fall Braun 1940 - German attacks against the Maginot Line on the French-German border in conjunction with Fall Grün
- Operation Eisen 1940 - German commando operation to occupy the bridge over the Albert Canal in Belgium
- Fall Falke 1940 - German attacks against the Maginot Line on the French-German border; part of Fall Grün
- Operation Festung 1940 - German airborne offensive on the Hague, Rotterdam, Dordrecht, and Moerdijk in the Netherlands; part of Fall Gelb
- Operation G 1940 - German airborne offensive on Ghent in the Netherlands; part of Fall Gelb
- Operation Geier 1940 - German attack of the Maginot Line on the French-Germany border north of Kehl, Germany; part of Fall Grün
- Operation Panther (1940) 1940 - German attacks on Strasbourg, France; part of Fall Braun
- Operation Paula 1940 - German aerial bombing of French countryside
- Operation Planspiel III 1940 - German breakthrough of the Maginot Line between Teting and Wittring, France
- Operation Raubvogelkäfig 1940 - German attack on the Maginot Line; part of Fall Grün
- Operation Habicht 1940 - German diversionary attack on Mulhouse, France; part of Fall Grün
- Operation Morgenröte 1940 - German attack on Dutch bridges
- Operation Luchs 1940 - German planned breakthrough between Breisach and Strasbourg, France; part of Fall Grün
- Operation Attila 1940–1942 - German occupation of Vichy France prior to Italian support in 1942
- Operation Hummer 1940–1945 - German infiltration of Britain
- Operation Seemöwe 1940–1945 - German agents infiltration into Britain and Ireland
- Operation Adler 1940 - German attacks on the British Royal Air Force, aimed to soften up the defences for a future amphibious invasion; also known as Operation Adlerangriff
- Operation Alfred 1940 - German mining off Dover, England using surface minelayers
- Operation Aufbau Ost 1940 - German strategic preparations for Operation Barbarossa
- Operation Bernhard 1940 - German mining off Dover, England
- Operation Felix 1940 - German planned invasion of Gibraltar via the Iberian Peninsula
- Fall Grün 1940 - German plan for a diversionary invasion of Ireland in support of Operation Seelöwe
- Operation Grüne Bewegung 1940 - German planned landing at Brighton, England; part of Operation Seelöwe
- Operation Grünpfeil 1940 - German occupation of the Channel Islands
- Operation Herbstreise 1940 - German planned diversionary invasion of Scotland, Britain; part of Operation Seelöwe
- Operation Hummel 1940 - German intelligence gathering for operation Seelöwe
- Operation Ikarus 1940 - German planned invasion of Iceland in response to British Operation Fork; originally planned to launch in conjunction with Operation Seelöwe
- Operation Kathleen 1940 - German planned invasion of Ireland
- Operation Lichtermeer 1940 - German airfield attacks| on British bomber airfields
- Operation Loge 1940 - German 65-day air offensive against London, England
- Operation Lucie 1940 - German planned invasion of the Dutch island of Texel in the North Sea
- Operation Luftparade 1940 - German night raid on British air bases
- Operation Löwe 1940 - German planned invasion of Britain; precursor of Operation Seelöwe
- Operation Marianne 1940 - German motorboat action off Dover, England
- Operation Mondscheinsonate 1940 - German night raid on Coventry, England
- Operation Nord 1940 - German heavy cruiser Admiral Scheer's raid in the North Atlantic Ocean
- Operation Nordseetour 1940 - German first Atlantic operation of Admiral Hipper
- Operation Oldenburg 1940 - German aerial reconnaissance of Soviet Union's natural resources
- Operation Oskar 1940 - German motorboat action off Dover, England, Britain
- Operation Otto 1940 - German strategic preparations for Operation Barbarossa
- Operation Regenschirm 1940 - German aerial bombing of Birmingham, England
- Operation Seelöwe 1940 - German planned invasion of Britain; anglicised as 'Sealion'
- Operation Sonnenblume 1940 - German response to British Operation Compass offensive in North Africa; deployment of the German Afrika Korps in North Africa
- Operation Spark 1940 - German planned assassination of Adolf Hitler and coup d'état against the Nazi German government
- Operation Tannenbaum 1940 - German planned invasion of Switzerland
- Operation Taube 1940 - German mission to transport Irish Republican Army Chief of Staff Seán Russell from Germany to Ireland
- Operation Theodora 1940 - German intelligence gathering operation in North Africa
- Operation Wespennest I 1940 - German destruction of rail links between Switzerland and France
- Operation Wespennest II 1940 - German destruction of rail links between Switzerland and France
- Operation Wikinger 1940 - German sortie by German destroyers into the North Sea
- Operation Wal 1940 - German aborted plan to coordinate actions with Scottish and Welsh nationalist groups
- Operation Walfisch 1940 - German aborted plan to land an agent in Ireland
Read more about this topic: List Of Axis Named Operations In The European Theatre