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The World War II Portal

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

Detail from a pillbox embrasure.
British anti-invasion preparations of World War II entailed a large-scale division of military and civilian mobilization in response to the threat of invasion by German armed forces in 1940 and 1941. The army needed to recover from the defeat of the British Expeditionary Force in France, and 1.5 million men were enrolled as part-time soldiers in the Home Guard. The rapid construction of field fortifications transformed much of Britain, especially southern England, into a prepared battlefield. Short of heavy weapons and equipment, the British had to make the best use of whatever was available.The German invasion plan, Operation Sea Lion, was never taken beyond the preliminary assembly of forces. Today, little remains of Britain's anti-invasion preparations. Only reinforced concrete structures such as pillboxes are common, and until recently, even these have been unappreciated as historical monuments.On 1 September 1939, Germany invaded Poland; two days later, Britain and France declared war on Germany, launching World War II. Within three weeks, the Red Army of the Soviet Union invaded the eastern regions of Poland in fulfillment of the secret Molotov–Ribbentrop Pact with Germany.


Selected equipment

An American paratrooper demonstrates the process of removing a live S-mine
The German S-mine (Schrapnellmine in German), also known as the Bouncing Betty, is the best-known version of a class of mines known as bounding mines. These mines launch into the air at about waist height and explode, propelling shrapnel horizontally at lethal speeds. The S-mine was an anti-personnel landmine developed by Germany in the 1930s and used extensively by German forces during World War II. It was designed to be used in open areas to attack unshielded infantry. Two versions were produced, designated by the year of their first production: the SMi-35 and SMi-44. There are only minor differences between the two models.The S-mine entered production in 1935 and served as a key part of the defensive strategy of the Third Reich. Until production ceased with the defeat of Germany in 1945, Germany produced over 1.93 million S-mines.These mines were responsible for inflicting heavy casualties and slowing, or even repelling, drives into German-held territory throughout the war. The design was lethal, successful and much imitated, and remains one of the definitive weapons of World War II.


Selected battle

Nazi Germany's attack on Greece
The Battle of Greece (also known as Operation Marita, was a World War II battle that occurred on the Greek mainland and in southern Albania. The battle was fought between the Allied (Greece and the British Commonwealth) and Axis (Nazi Germany, Fascist Italy and Bulgaria) forces. With the Battle of Crete and several naval actions, the Battle of Greece is considered part of the wider Aegean component of the Balkan Campaign of World War II. The Battle of Greece is generally regarded as a continuation of the Greco-Italian War, which began when Italian troops invaded Greece on October 28, 1940. Within weeks the Italians were driven from Greece and Greek forces pushed on to occupy much of southern Albania. In March 1941, a major Italian counterattack failed, and Germany was forced to come to the aid of its ally. Operation Marita began on April 6, 1941, with German troops invading Greece through Bulgaria in an effort to secure its southern flank. The combined Greek and British forces fought back with great tenacity, but were vastly outnumbered and outgunned, and finally collapsed. Athens fell on April 27.


Selected picture

Waldenburg, Baden-Württemberg, 1945
Credit: 2d Lt. Jacob Harris, U.S. Army
Infantrymen of the 255th Infantry Regiment move down a street in Waldenburg, Baden-Württemberg, Germany, searching for a fugitive after a recent raid by the 63rd Infantry Division in 1945.

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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Selected quote

"No enemy bomber can reach Berlin. If one reaches Berlin, my name is not Goering. You may call me Meyer."
Hermann Göring, September, 1939

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
Nanking 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
Kingdom of Bulgaria Bulgaria
 Independent State of Croatia
Empire of Japan Japan
Finland Finland
 Vichy France
Kingdom of Hungary (1920–1946) Hungary
Kingdom of Italy Italy
Nazi Germany Germany
Kingdom of Romania Romania
Thailand Thailand
 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 defenceTuskegee Airmen
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 litigation (draft) • Ove 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) • Finnish 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 OinonenA.S. KsenofontovSiege of Tobruk (June 1942)5th Guards Fighter Aviation Regiment (ru) • Novorossiysk-Taman operation (ru) • 1943 Novorossiysk operation (ru) • 1943 Aerial Battles over Kuban (ru) • Battle of Rostov (1943) (ru) • Olshansky amphibious landing (ru) • Nalchik-Ordzhonikidzevskaya operation (ru) • Bukrinsky landing (ru) • Cape Tarhan Landing (ru) • 1942 Sudak Landing (ru) ] • Turning point of World War II
Expansion needed
Princess Irene BrigadeBattle of Bay of ViipuriDemilitarisation; Martha 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 FourcadeVictor Strydonck de BurkelDonald BlakesleeOperation NordwindBattle of Skerki BankMichael Sinclair (soldier)Battle of MaastrichtBattle of ZeelandLandings on RendovaNew Georgia counterattackOperation WaterfallPetsamo–Kirkenes OffensiveRaid on ChoiseulAmerican-British-Dutch-Australian CommandBattle of Viru HarborBattle of Wickham AnchorageWestern New Guinea campaign (and the individual battles of the campaign) • Operation Blockbustermore
Images needed
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 FraserDietrich von Saucken
Merging needed
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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 campaign
Translation needed 
pt:Tobrouk (militar)

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