The List of theatres and campaigns of World War II subdivides military operations of World War II and contemporary wars by war, then by theater and then by campaign.
The European Theater of Operations, United States Army (ETOUSA) was a United States Army formation which directed US Army operations in parts of Europe from 1942 to 1945. It referred to Army Ground Forces, United States Army Air Forces, and Army Service Forces operations north of Italy and the Mediterranean coast, in the European Theater of World War II. It was bordered to the south by the North African Theater of Operations, US Army (NATOUSA), which later became the Mediterranean Theater of Operations (MTOUSA).
The Asiatic-Pacific Theater was the theater of operations of U.S. forces during World War II in the Pacific War during 1941–45. From mid-1942 until the end of the war in 1945, there were two U.S. operational commands in the Pacific. The Pacific Ocean Areas (POA), divided into the Central Pacific Area, the North Pacific Area and the South Pacific Area, were commanded by Admiral Chester W. Nimitz, Commander-in-Chief Pacific Ocean Areas. The South West Pacific Area (SWPA) was commanded by General Douglas MacArthur, Supreme Allied Commander South West Pacific Area. During 1945, the United States added the United States Strategic Air Forces in the Pacific, commanded by General Carl A. Spaatz.
The European theatre of World War II was an area of heavy fighting across Europe, starting with Germany's invasion of Poland on 1 September 1939 and ending with the United States, the United Kingdom and France conquering most of Western Europe, the Soviet Union conquering most of Eastern Europe and Germany’s unconditional surrender on 8 May 1945. The Allied powers fought the Axis powers on two major fronts as well as in a strategic bombing offensive and in the adjoining Mediterranean and Middle East theatre.
The South-East Asian Theatre of World War II was the name given to the campaigns of the Pacific War in Burma, Ceylon, India, Thailand, the Philippines, Indochina, Malaya and Singapore. Conflict in this theatre began when the Empire of Japan invaded French Indochina in September 1940 and rose to a new level following the raid on Pearl Harbor, and simultaneous attacks on Hong Kong, the Philippines, Thailand, Singapore and Malaya on 7 and 8 December 1941. The main landing at Singora on the east side of the Isthmus of Kra preceded the bombing of Pearl Harbor by several hours. Action in the theatre officially ended on 9 September 1945.
Nearly every country and territory in the world participated in World War II. Most were neutral at the beginning, but only a few nations remained neutral to the end. The Second World War pitted two alliances against each other, the U.S having served 16 million men, Germany serving 13 million, Soviet Union serving 35 million and Japan serving 6 million. With millions serving in other countries an estimated 300 million soldiers saw combat. A total of 72 million people died with the lowest estimate being 40 million dead and the highest estimate being 120 million dead. The Axis powers and the Allied powers. The leading Axis powers were Nazi Germany, the Kingdom of Italy and the Empire of Japan; while the United Kingdom, the United States, the Soviet Union and China to an extent were the "Big Four" Allied powers.
Battle Honours are awarded by the Sovereign to Royal Air Force squadrons to commemorate the squadron's role in a particular operation.
The Allies of World War II, called the United Nations from the 1 January 1942 declaration, were the countries that together opposed the Axis powers during the Second World War (1939–1945). The Allies promoted the alliance as a means to control German, Japanese and Italian aggression.
The South West Pacific theatre, during World War II, was a major theatre of the war between the Allies and the Axis. It included the Philippines, the Dutch East Indies, Borneo, Australia and its mandate Territory of New Guinea and the western part of the Solomon Islands. This area was defined by the Allied powers' South West Pacific Area (SWPA) command.
The Pacific Ocean theater, during World War II, was a major theater of the war between the Allies and the Empire of Japan. It was defined by the Allied powers' Pacific Ocean Area command, which included most of the Pacific Ocean and its islands, while mainland Asia was excluded, as were the Philippines, the Dutch East Indies, Borneo, Australia, most of the Territory of New Guinea and the western part of the Solomon Islands.
The Allied leaders of World War II listed below comprise the important political and military figures who fought for or supported the Allies during World War II. Engaged in total war, they had to adapt to new types of modern warfare, on the military, psychological and economic fronts.
The following outline is provided as an overview of and topical guide to World War II:
This is a bibliographyof works on World War II.