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Clockwise from top left: Commonwealth troops in the desert; Chinese civilians being buried alive by Japanese soldiers; Soviet forces during a winter offensive; Carrier-borne Japanese planes readying for take off; Soviet troops fighting in Berlin; A German submarine under attack.

World War II, or the Second World War, was a global military conflict. It began as the joining of what had initially been two separate conflicts, with the first beginning in Asia in 1937 (the Second Sino-Japanese War) and the other beginning in Europe in 1939 (the German and Soviet invasion of Poland).

The war split the majority of the world's nations into two opposing military alliances: the Allies and the Axis. It involved the mobilization of over 100 million military personnel, making it the most widespread war in history, and placed the participants in a state of "total war", which erased the distinction between civil and military resources and resulted in the complete activation of a nation's economic, industrial, and scientific capabilities for the purposes of the war effort. Over 70 million people, the majority of them civilians, were killed, making it the deadliest conflict in human history.

The Allies won the war, and as a result, the Soviet Union and the United States emerged as the world's leading superpowers. This set the stage for the Cold War, which lasted for the next 45 years. The United Nations was formed in the hope of preventing another such conflict. The self-determination spawned by the war accelerated decolonization movements in Asia and Africa, while Europe itself began moving toward integration.

Featured article

Lt. Francisco Mercado, Jr. awarded the Distinguished Flying Cross by General Leon Johnson
Hispanic Americans in World War II fought in every major battle in the European Theatre, from North Africa to the Battle of the Bulge, and in the Pacific Theater of Operations, from Bataan to Okinawa. According to the National World War II Museum, between 250,000 and 500,000 Hispanic Americans served in the Armed Forces during WWII, out of a total of 10,420,000, comprising 2.3% to 4.7% of the Armed Forces. The exact number is unknown as, at the time, Hispanics were integrated into the general white population census count. Separate statistics were kept for African-Americans and Asian-Americans.On December 7, 1941, when the United States officially entered the war, Hispanic Americans were among the many American citizens who joined the ranks of the Army, Navy and Marine Corps as volunteers or through the draft.


Selected equipment

Finnish T-26 at the Parola Tank Museum
The T-26 was a light tank used by the Soviet Union from the 1930s until World War II. It was based on the British Vickers 6-Ton tank and widely considered one of the most successful designs of the 1930s.The T-26 made-up the majority of the Red Army's armour force until late 1941, and saw a long history in the armed forces of various different nations around the world. For almost a decade the T-26 proved to be one of the best tanks in production, with a total of around 12,000 units produced.Success and failure in the Spanish Civil War, where it served as the most widely used tank, ultimately played a major role in influencing the Soviet doctrine of tank warfare in the late 1930s. The T-26 participated in German invasion of the Soviet Union in 1941 as one of the most numerous tanks inservice,contributing to the defense of the Soviet Union.Although the T-26's reputation was marred by its abysmal performance during World War II, it was nevertheless the most important tank of the Spanish Civil War and played major roles during the Winter War and the Battle of Khalkhin Gol in 1939. Between its introduction and its retirement, the T-26 saw a great deal of modernization efforts between 1932 and 1941.


Selected battle

A United States Marine stands near some of the fighting positions on Hill 123 on "Edson's" Ridge after the battle. Edson's command post during the battle was located just to the right of where the Marine is standing.
The Battle of Edson's Ridge, also known as the Battle of the Bloody Ridge, Battle of Raiders Ridge, and Battle of the Ridge, was a land battle of the Pacific campaign of World War II between Imperial Japanese Army and Allied (mainly United States Marine Corps) ground forces. It took place September 12–September 14, 1942 on Guadalcanal Island in the Solomon Islands, and was the second of three separate major Japanese ground offensives in the Guadalcanal campaign.In the battle, U.S. Marines, under the overall command of U.S. Major General Alexander Vandegrift, repulsed an attack by the Japanese 35th Infantry Brigade, under the command of Japanese Major General Kiyotake Kawaguchi. The Marines were defending the Lunga perimeter that guarded Henderson Field on Guadalcanal, which was captured from the Japanese by the Allies in landings on Guadalcanal on August 7, 1942. Kawaguchi's unit was sent to Guadalcanal in response to the Allied landings with the mission of recapturing the airfield and driving the Allied forces from the island.


Selected picture

Benito Mussolini and Adolf Hitler
Credit: Istituto Nazionale Luce

Benito Mussolini of Fascist Italy (left) and Adolf Hitler of Nazi Germany, two of the Axis leaders of World War II, before one of the Honor Temples of Königsplatz, Munich, sending off their armies to North Africa and into Egypt against the British.

Selected biography

Franklin D. Roosevelt
Franklin Delano Roosevelt often referred to by his initials FDR, was the thirty-second President of the United States. Elected to four terms in office, he served from 1933 to 1945 and is the only U.S. president to have served more than two terms. He was a central figure of the 20th century during a time of worldwide economic crisis and world war. During the Great Depression of the 1930s, Roosevelt created the New Deal to provide relief for the unemployed, recovery of the economy, and reform of the economic and banking systems. Although recovery of the economy was incomplete until almost 1940, the programs he initiated such as the Federal Deposit Insurance Corporation (FDIC), Tennessee Valley Authority (TVA), and the United States Securities and Exchange Commission (SEC) continue to have instrumental roles in the nation's commerce. One of his most important legacies is the Social Security system. As Britain warred with Nazi Germany, Roosevelt provided Lend-Lease aid to Winston Churchill and the British war effort before America's entry into World War II in December, 1941.


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Categories

Selected quote

"As soon as the idea was introduced that all men were equal before God, that world was bound to collapse."
Adolf Hitler, 26 February 1942.

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

more...

Blitzkrieg
Cryptography
Equipment
Home Front
Military engagements
Production
Resistance
Technology

Civilian impact and atrocities
Nanking Massacre
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
Egypt Egypt
El Salvador El Salvador
France France (after June 16, 1940: Free France Free France)
Greece Greece
Netherlands Netherlands
New Zealand New Zealand
Norway Norway
Commonwealth of the Philippines Philippines
Poland Poland
Taiwan Republic of China
South Africa South Africa
Soviet Union Soviet Union
United Kingdom United Kingdom
United States United States
Socialist Federal Republic of Yugoslavia Yugoslavia

more...

The Axis
Bulgaria Bulgaria
 NDH
Empire of Japan Japan
Finland Finland
France Vichy France
Hungary Hungary
Kingdom of Italy Italy
Nazi Germany Germany
Romania Romania
Thailand Thailand
Slovakia Slovakia

more...


Things you can do

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

Attention needed
...to referencing and citation  • ...to coverage and accuracy  • ...to structure  • ...to grammar  • ...to supporting materials 
Popular pages
Full list
Cleanup needed  
Battle of Kiev (1943)Battle of Ko ChangColditz CastleSpiritual national defence
Requested articles 
Battle of Uhtua-KiestinkiBattles of Repola-RukajärviBattle of SiiranmäkiBattle of ŁuckBattle of RówneBattle of Włodzimierz WołyńskiBattle of LubartówBattle of MiednikiBattle of JodłaFrancis BlanchainShinshou DraengerChrister Lyst HansenHolocaust slave labor litigationOve KampmanLeague for Combat PolicyFrederick Charles LoughJulien MelineOperation BigotOperation MittelmeerOperation RichardOtto ProgramMartin PoppelRoehm's AvengersDorothy TartierePoul BruunRaoul BoulangerSerge Asher-RavanelBattle of West Ukraine (1941)Battle of ZunyiFree Dutch Forces (draft, please assist) • Liberation of Denmark (currently redirect) • Operation Vado (currently redirect) • German torpedo boat AlbatrosFinnish 19th Division (Continuation War)Finnish 11th Division (Continuation War)Finnish VII Corps (Continuation War)Finnish VI Corps (Continuation War)Finnish IV Corps (Continuation War)Finnish Cavalry Brigade1st Jaeger Brigade2nd Jaeger BrigadeFinnish 1st Division (Continuation War)168th Rifle Division (Soviet Union)71st Rifle Division (Soviet Union)Group OinonenSS MindenTsutsumi Fusaki (ru) • A.S. Ksenofontov (ru) • Ponomarev Dmitry Grigorievich (ru) (ref); Siege of Tobruk (June 1942) (ref)
Expansion needed  
Princess Irene BrigadeBattle of Bay of ViipuriDemilitarisation; Martha DesrumeauxMochitsura HashimotoOperation CascadeOperation Tan No. 2Burma Area ArmyBattle of CourlandBattle of Voronezh (1943)First Battle of KharkovRace to BerlinMarie FourcadeVictor Strydonck de BurkelDonald BlakesleeOperation NordwindBattle of Skerki BankMichael Sinclair (soldier)Battle of MaastrichtBattle of ZeelandOperation WaterfallPetsamo–Kirkenes OffensiveAmerican-British-Dutch-Australian CommandWestern New Guinea campaign (and the individual battles of the campaign) • more
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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 Wars
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de:Josef Meisingernl:Type 5 Na-Topt:Tobrouk (militar)

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