Operation Schulmeister (proposed cession of the Balearic Islands by the Spanish Republic to Italy in exchange of neutrality in the Spanish Civil War).[5]
Nazi propossals of a German-Lithuanian military alliance to invade Poland during Danzig crisis, returning the Vilnius Region to Lithuania in exchange of being turned into a German Puppet State.[6]
"big solution" supported by Nazi Party (German conquest of Danzig and Polish Corridor to the Reich, then compensating Poland, turned into a landlocked and German Puppet state, with German support to annex parts of Soviet Ukraine in a future Nazi-Soviet War, giving Poland an exit to the Black Sea).[8]
Second Offer from Soviet to Axis in Partitioning the world (the same, but Bulgaria, Finland, Western Turkey and Sakhalin included in Soviet Sphere of Influence)
German propossals to Kazys Škirpa to transform Lithuania into a German Protectorate in the north,[16] and the rest of Central Poland as another German Protectorate[12] (never carried out due to 2nd Molotov-Ribbentrop Pact).
Operation Rot (invasion of France and principal western attack. Carried out 5 June 1940)
Case Brown (projected German-Italian invasion of Southern France through the Rhône and possibly Switzerland to avoid Maginot Line. Modiffied in lesser extensions after the great success of Gelb and Rot Operations)
The Fuhrmann Plan (attempted German occupation of Uruguay in 1940. Never carried out due being discovered by Uruguayan government)
Operation Strafe (German planned invasion of Bulgaria in case they reject to join Tripartite Pact. Developed on on 30 November 1940, cancelled after get Bulgarian support)[20]
Operation Marita (invasion of Greece via Bulgaria, Germany supporting the Italian efforts. Carried out 6 April 1941.)
Unnamed German operation involving Iran (Attempted German pressure over Iran to force them join the Axis and invade Iraq in support of Rashid Ali al-Gaylani. Rejected by Iranian authorities that were skeptical due to Axis-Soviet partnership)[23]
Operation Fire Eater (German-Italian plans to instigate a Pasthun rebellion against British India on the Pakistani Side and form a pro-Axis Pashtunistan state, planned to be carried out on June–July 1941. Cancelled due to being discovered by the Afghan Government with British help)[25]
Unnamed Italian plans to invade Yugoslavia in April 1940 (intended to be an outside conflict of the War between Germany and the Allies, never carried out due to joining Italy to the German war against Britain and France)[26][27]
Staging Plan 12 (Italian invasion of France, carried out in June 1940, there was no planning for an offensive against France beyond mobilisation)[28]
Italian incursions over Kenya (Italian uncoordinated operations to seizure strategical defensive positions inner Kenya's border, carried out on 4 July 1940)[31]
Unnamed Italian plans for a future Italo-Greek invasion of British Cyprus after the war (never carried out due to Italian defeat).[36]
Italian militar propposals to Bulgaria on 18 October 1940 (Mussolini's invitation to Tsar Boris III of Bulgaria to be part of the Operation G and re-conquer former Bulgarian Thrace in a joint-invasion, never carried out due to economical problems).[37][36]
Projected Italian administrative divisions of occupied territories
Operation Typhoon (strategic pincer offensive against the Moscow region. Carried out 2 October 1941.)
Operation Wotan (tank operation with the goal of capturing Moscow)
Siege of Odessa (German-assisted Romanian offensive to capture the port city of Odessa and complete the Romanian conquest of Transnistria. Carried out 8 August 1941.)
Unnamed Operation concerning Indo-Iranian region (German plans to invade India via Persia through the projected conquered Soviet Union. Planned since June 1941, never carried out due to the strategical failure of Barbarrosa Operation)[23]
Operation Störfang (combined German-Romanian assault supported by Italian naval units to capture the Crimean port city of Sevastopol. Carried out 2 June 1942.)
Operation Pastorius (failed sabotage mission to destroy military, manufacturing and transportation targets throughout the United States. Carried out 12 June 1942, but foiled during the summer.)
Operation Herkules (attempted German-Italian air invasion of British Malta on mid-July 1942. Cancelled due to priorize Afrika Korps land-force operations in North-Africa than air Force operation in the Mediterranean after near-disaster of paratroops on Battle of Crete).
Unnamed Operations concerning Iran and Afghanistan (German invitation for Iran and Afghanistan to join the Axis Powers and invade Soviet Union and British Raj in exchange of support for Pan-Iranist aspirations)
Planned establishment of pro-Axis regimes on Iran, Afghanistan, and Turkey, turning them in a "northern tier" of buffer states against Asian Russia and Soviet Central Asia, being in equal condition with Germany in exchange.[41][42]
Planned establishment of pro-Turkish and Axis puppet states on the Caucasus and Black Sea (Armenia and Georgia), with Crimea Peninsula as a frontier of German and Turkish sphere of influence.
Projected German-Armenian military intervention against a possible Pan-Turkism unifications, specially against a "Büyük Turan" union between hypothetical pro-Axis Turkey and Azerbaijan (as the last would be under German-Iranian sphere of influence).[44][45]
Operation Gertrud (projected German-Bulgarian-Armenian invasion of Turkey in case it joined the Allies in the beginning of the summer of 1942)[46]
Operation Ilona (a plan aiming to counter an Anglo-American invasion of Iberia by holding north Spanish and Portuguese ports to protect German positions in France. Prepared in 1942, never carried out.)[24]
Operation Blau (strategic summer offensive in southern USSR. Carried out 28 June 1942.)
Plan Orient (projected German invasion of Middle East and linking with Japanese forces to conquest India. Mostly by Afrika Corps in Libya and Egypt, but also troops from Bulgaria and the Balkans, and troops from Caucasus and Southern Russia)[52]
Operation Wacht am Rhein (also known as the Battle of the Bulge. German panzer attack through the Ardennes with the goal of recapturing Antwerp and encircling of British Allied forces in Belgium and the Netherlands)
Listed below are operations and invasion plans of the Japanese Empire from 1929 to 1942:
1929–1940
Hokushin-ron (plans for a potential attack on the Soviet Union and the occupation of territories from Manchuria to Central Siberia, making a territorial expansion to the north).
Knox, MacGregor (1988). Mussolini unleashed: 1939 - 1941; politics and strategy in fascist Italy's last war (1. paperback ed., repred.). Cambridge: Cambridge University Press. ISBN978-0-521-33835-6.
Butler, James Ramsay Montagu; Gibbs, Norman Henry; Gwyer, J. M. A.; Ehrman, John; Gibbs, Norman Henry; Howard, Michael Eliot (1976). Grand strategy. Internet Archive. London: H. M. Stationery Off. ISBN978-0-11-630095-9.
Rodogno, Davide (2006). Fascism's European empire: Italian occupation during the Second World War. New studies in European history. Cambridge (GB) New York: Cambridge University Press. ISBN978-0-521-84515-1.
Knox, MacGregor (1986). Mussolini unleashed, 1939-1941: politics and strategy in fascist Italy's last war (1st pbk.ed.). Cambridge [Cambridgeshire]; New York: Cambridge University Press. ISBN978-0-521-33835-6.
Kurt Mehner, Germany. Oberkommando der Wehrmacht, Bundesarchiv (Germany). Militärarchiv, Arbeitskreis für Wehrforschung. Die Geheimen Tagesberichte der Deutschen Wehrmachtführung im Zweiten Weltkrieg, 1939-1945: 1. Dezember 1943-29. Februar 1944. p.51 (in German).