The World War II Portal

World War II or the Second World War was a global conflict that lasted from 1939 to 1945. The vast majority of the world's countries, including all the great powers, fought as part of two opposing military alliances: the Allies and the Axis. Many participating countries invested all available economic, industrial, and scientific capabilities into this total war, blurring the distinction between civilian and military resources. Aircraft played a major role, enabling the strategic bombing of population centres and delivery of the only two nuclear weapons ever used in war. It was by far the deadliest conflict in history, resulting in 70–85 million fatalities. Millions died due to genocides, including the Holocaust, as well as starvation, massacres, and disease. In the wake of Axis defeat, Germany, Austria, and Japan were occupied, and war crime tribunals were conducted against German and Japanese leaders.

The causes of the war are debated; contributing factors included the rise of fascism in Europe, the Spanish Civil War, the Second Sino-Japanese War, Soviet–Japanese border conflicts, and tensions in the aftermath of World War I. World War II is generally considered to have begun on 1 September 1939, when Nazi Germany, under Adolf Hitler, invaded Poland. The United Kingdom and France declared war on Germany on 3 September. Under the Molotov–Ribbentrop Pact of August 1939, Germany and the Soviet Union had partitioned Poland and marked out their "spheres of influence" across Finland, Estonia, Latvia, Lithuania, and Romania. From late 1939 to early 1941, in a series of campaigns and treaties, Germany conquered or controlled much of continental Europe in a military alliance called the Axis with Italy, Japan, and other countries. Following the onset of campaigns in North and East Africa, and the fall of France in mid-1940, the war continued primarily between the European Axis powers and the British Empire, with the war in the Balkans, the aerial Battle of Britain, the Blitz of the UK, and the Battle of the Atlantic. In June 1941, Germany led the European Axis powers in an invasion of the Soviet Union, opening the Eastern Front, the largest land theatre of war in history. (Full article...)

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Royal Oak at anchor in 1937

HMS Royal Oak was one of five Revenge-class battleships built for the Royal Navy during the First World War. Completed in 1916, the ship first saw combat at the Battle of Jutland as part of the Grand Fleet. In peacetime, she served in the Atlantic, Home and Mediterranean fleets, more than once coming under accidental attack. Royal Oak drew worldwide attention in 1928 when her senior officers were controversially court-martialled, an event that brought considerable embarrassment to what was then the world's largest navy. Attempts to modernise Royal Oak throughout her 25-year career could not fix her fundamental lack of speed and, by the start of the Second World War, she was no longer suitable for front-line duty.

On 14 October 1939, Royal Oak was anchored at Scapa Flow in Orkney, Scotland, when she was torpedoed by the German submarine U-47. Of Royal Oak's complement of 1,234 men and boys, 835 were killed that night or died later of their wounds. The loss of the outdated ship—the first of five Royal Navy battleships and battlecruisers sunk in the Second World War—did little to affect the numerical superiority enjoyed by the British navy and its Allies, but it had a considerable effect on wartime morale. The raid made an immediate celebrity and war hero of the U-boat commander, Günther Prien, who became the first German submarine officer to be awarded the Knight's Cross of the Iron Cross. Before the sinking of Royal Oak, the Royal Navy had considered the naval base at Scapa Flow impregnable to submarine attack, but U-47's raid demonstrated that the German navy was capable of bringing the war to British home waters. The shock resulted in rapid changes to dockland security and the construction of the Churchill Barriers around Scapa Flow, with the added advantage of being topped by roads running between the islands.

The wreck of Royal Oak, a designated war grave, lies almost upside down in 100 feet (30 m) of water with her hull 16 feet (4.9 m) beneath the surface. In an annual ceremony marking the loss of the ship, Royal Navy divers place a White Ensign underwater at her stern. Unauthorised divers are prohibited from approaching the wreck under the Protection of Military Remains Act 1986. (Full article...)

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USS Chicago low in the water on the morning of 30 January 1943, from torpedo damage inflicted the night before

The Battle of Rennell Island (Japanese: レンネル島沖海戦, Hepburn: Renneru-shima oki kaisen) took place on 29–30 January 1943. It was the last major naval engagement between the United States Navy and the Imperial Japanese Navy during the Guadalcanal Campaign of World War II. It occurred in the South Pacific between Rennell Island and Guadalcanal in the southern Solomon Islands.

In the battle, Japanese land-based torpedo bombers, seeking to provide protection for the impending evacuation of Japanese forces from Guadalcanal, made several attacks over two days on U.S. warships operating as a task force south of Rennell Island. In addition to approaching Guadalcanal with the objective of engaging any Japanese ships that might come into range, the U.S. task force was protecting an Allied transport ship convoy carrying replacement troops there.

As a result of the Japanese air attacks on the task force, one U.S. heavy cruiser was sunk, a destroyer was heavily damaged, and the rest of the U.S. task force was forced to retreat from the southern Solomons area. Partly because they turned back the U.S. task force in this battle, the Japanese successfully evacuated their remaining troops from Guadalcanal by 7 February 1943, leaving it in the hands of the Allies and ending the battle for the island. (Full article...)

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Landing at the Battle of Normandy
Landing at the Battle of Normandy
Credit: U.S. Army's First Division
The Battle of Normandy (D-Day) is one of the best-known battles of World War II. The invasion force included 4000 landing craft, 130 warships for bombardment and 12,000 aircraft to support the landings. To convince the Germans the invasion would come to the Pas de Calais, the Allies prepared a massive deception plan, called Operation Fortitude. An entirely fictitious First U.S. Army Group was created, with fake buildings and equipment, and false radio messages were sent.

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George Jones
Air Marshal Sir George Jones KBE, CB, DFC (18 October 1896 – 24 August 1992) was a senior commander in the Royal Australian Air Force (RAAF). He rose from being a private soldier in World War I to Air Marshal in 1948. He served as Chief of the Air Staff from 1942 to 1952, the longest continuous tenure of any RAAF chief. Jones was a surprise appointee to the Air Force’s top role, and his achievements in the position were coloured by a divisive relationship during World War II with his head of operations and nominal subordinate, Air Vice Marshal William Bostock. Jones first saw action as an infantryman in the Gallipoli campaign of 1915, before transferring to the Australian Flying Corps the following year. Initially an air mechanic, he undertook flying training in 1917 and was posted to a fighter squadron in France, achieving seven victories to become an ace. After a short spell in civilian life following World War I, he joined the newly-formed RAAF in 1921, rising steadily through training and personnel commands prior to World War II.


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"All of the real heroes are not storybook combat fighters, either. Every single man in this Army plays a vital role. Don't ever let up. Don't ever think that your job is unimportant. Every man has a job to do and he must do it. Every man is a vital link in the great chain."
George S. Patton, 5 June 1944

Topics

World War II
Theatres Main events Specific articles Participants

Prelude
Causes
in Europe
in Asia

Main theatres
Europe
Eastern Europe
China
Mediterranean, Middle East and Africa
Asia and the Pacific
Atlantic

General timeline
Timeline

1939
Invasion of Poland
Winter War

1940
Invasion of Denmark/Norway
Battle of France
Battle of Britain

1941
Invasion of the Soviet Union
Battle of Moscow
Attack on Pearl Harbor

1942
Battle of Midway
Battle of Stalingrad
Second Battle of El Alamein

1943
Battle of Kursk
Guadalcanal campaign
Invasion of Italy

1944
Battle of Normandy
Operation Bagration
Battle of Leyte Gulf
Operation Market Garden
Battle of the Bulge

1945
Battle of Iwo Jima
Battle of Okinawa
Battle of Berlin
End in Europe
Hiroshima and Nagasaki
Surrender of Japan

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Blitzkrieg
Cryptography
Equipment
Home Front
Military engagements
Production
Resistance
Technology

Civilian impact and atrocities
Nanjing Massacre
The Holocaust
Siege of Leningrad
Bataan Death March
Dutch famine of 1944
Bengal famine of 1943
Hiroshima and Nagasaki
Unit 731
Strategic bombings
Comfort women
Allied war crimes
German war crimes
Japanese war crimes

Aftermath
Effects
Casualties
Expulsion of Germans
Denazification
Cold War
Universal Declaration of Human Rights
Decline of the British Empire

The Allies
Australia Australia
Belgium Belgium
Brazil Brazil
British Raj British India
Canada Canada
Czechoslovakia Czechoslovakia
Kingdom of Egypt Egypt
El Salvador El Salvador
French Third Republic France (after June 16, 1940: Free France Free France)
Kingdom of Greece Greece
Netherlands Netherlands
Dominion of New Zealand New Zealand
Norway Norway
Commonwealth of the Philippines Philippines
Poland Poland
Republic of China (1912–1949) Republic of China
Union of South Africa South Africa
Soviet Union Soviet Union
United Kingdom United Kingdom
United States United States
Kingdom of Yugoslavia Yugoslavia

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The Axis
Nazi Germany Germany
Kingdom of Italy Italy
Empire of Japan Japan
 Slovakia
Kingdom of Bulgaria Bulgaria
 Croatia
Finland Finland
 Vichy France
Kingdom of Hungary (1920–1946) Hungary
Kingdom of Romania Romania
Thailand Thailand

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From the World War II task force of the Military history WikiProject:

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Battle of Kiev (1943)Battle of Ko ChangColditz CastleSpiritual national defenceTuskegee Airmen
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Battle of Uhtua-Kiestinki • Battles of Repola-Rukajärvi • Battle of Siiranmäki • Battle of Łuck • Battle of Równe • Battle of Włodzimierz Wołyński • Battle of Lubartów • Battle of Miedniki • Battle of Jodła • Francis Blanchain • Shinshou Draenger • Christer Lyst Hansen • Ove Kampman • League for Combat Policy • Julien Meline • Operation Mittelmeer • Operation Richard • Otto Program • Martin Poppel • Roehm's Avengers • Poul Bruun • Raoul Boulanger • Battle of West Ukraine (1941) • Battle of Zunyi • Liberation of Denmark (currently redirect) • Operation Vado (currently redirect) • Finnish 19th Division (Continuation War) • Finnish 11th Division (Continuation War) • Finnish Cavalry Brigade • 1st Jaeger Brigade • 2nd Jaeger Brigade • 168th Rifle Division (Soviet Union) • 71st Rifle Division (Soviet Union) • Group Oinonen • Operation Vesuvius (currently redirect) • Capture of Kassala (currently redirect) • Battle of Pankow • Brandenburg–Rathenow Offensive • Japanese internment of European civilians during World War II • Miranda de Ebro concentration camp • German occupation of the Netherlands (current redirect) • Soviet home front during World War II • Labour Charter (Vichy France) • Berles-Monchel and Aubigny-en-Artois massacres (1940) • Febvin-Palfart massacre (1940) • German massacres of French colonial prisoners of war • 1941 Nord-Pas de Calais miners' strike • Spitfire funds • Good War (historiography) • Nederlandsche Oost Compagnie • West African Pioneers • 2nd Marching Battalion of Ubangui-Shari • Bataillon du Pacifique • Persecution of freemasons in Nazi Germany and German-occupied Europe • Mohammed El Maadi • Luxembourgers in the Wehrmacht • Chantiers de la Jeunesse (Vichy France) • Netherlands East Indies Government in exile • Burma Government in exile (1942-1945) • Free Republic of Nias
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Princess Irene BrigadeBattle of Bay of ViipuriDemilitarisationFree Dutch ForcesMartha DesrumeauxMochitsura HashimotoOperation CascadeOperation Tan No. 2Burma Area ArmyBattle of CourlandBattle of Munda PointBattle of Voronezh (1943)Drive on Munda PointFirst Battle of KharkovRace to BerlinMarie FourcadeDonald BlakesleeOperation NordwindBattle of Skerki BankMichael Sinclair (soldier)Battle of MaastrichtBattle of ZeelandLandings on RendovaNew Georgia counterattackOperation WaterfallPetsamo–Kirkenes OffensiveAmerican-British-Dutch-Australian CommandBattle of Viru HarborBattle of Wickham AnchorageWestern New Guinea campaign (and the individual battles of the campaign) • Operation BlockbusterOperation CooneyThe Holocaust in FranceKnowledge of the Holocaust in Nazi Germany and German-occupied EuropeFrancoist Spain and the HolocaustJapan campaignVolcano and Ryukyu Islands campaignLégion Français des Combattantsmore
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Twelfth Army (United Kingdom)4th Airborne Division (United Kingdom)5th Airborne Division (United Kingdom)XVI Corps (United Kingdom)Battle of DakarBattle of the Lys (1940)Battle of ZeelandBattle of the GrebbebergFranco-Thai WarBattle of Ko ChangSwitzerland during the World WarsBerthe FraserWestern Allied invasion of GermanyLXXXIII Army Corps (Wehrmacht)
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Battle of Borneo (1941–42)Battle of ImphalGarderegiment Fuseliers Prinses IreneJapanese invasion of French IndochinaJapanese invasion of ThailandLuxembourg in World War IINew Georgia CampaignOperation CartwheelOperation ChastiseRoyal Netherlands Motorized Infantry BrigadeSolomon Islands campaignBattle of RadomSeishin OperationMoravia–Ostrava OffensivePanzerjäger
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5th Guards Fighter Aviation Regiment [ru] • Novorossiysk-Taman Operation [ru] • 1943 Novorossiysk Operation [ru] • 1943 Air Battles over Kuban [ru] • Battle of Rostov (1943) [ru] • Battle of Olshansky [ru] • Nalchik-Ordzhonikidzevskaya Operation [ru] • Bukrinsky Landing [ru] • Cape Tarhan Landing [ru] • 1942 Sudak Landing [ru] • Mozdok-Malgobek Operation [ru] • Alexander Sergeyevich Ksenofontov [ru] • Henri de Vernejoul [fr] • André Bergeret [fr] • Battle of Nice [fr] • Liberation de Saint-Malo [fr] • Battle of Seuil Valley [fr] • René-Jean-Paul Cassagne [fr] • Cameroun's rallying to the Free French [fr] • Battle of Bouno-Misaki [ja]

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